لا ينبغي أن لا يتم تثبيت هذا السكريت مباشرة. هو مكتبة لسكبتات لتشمل مع التوجيه الفوقية // @require https://update.greasyfork.org/scripts/506614/1441300/ESTreeProcessor.js
// ==UserScript==
// @name ESTreeProcessor
// @namespace https://github.com/mapomatic
// @version 2.0.1
// @description Compiles a string containing Javascript to an ESTree object and/or executes an ESTree object in Javascript
// @author MapOMatic
// @license GNU GPLv3
// ==/UserScript==
// TODO:
// - Add support for classes
// - Probably a lot more I haven't discovered yet.
/* eslint-disable */
const ESTreeProcessor = (function() {
'use strict';
// This is a copy of the esprima-next library. The Node.js build has been modified to work with userscripts.
// The following copyright notice applies to the espima-next library.
// Copyright JS Foundation and other contributors, https://js.foundation/
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
const esprima = (function() {
'use strict';
const Syntax = {
AssignmentExpression: 'AssignmentExpression',
AssignmentPattern: 'AssignmentPattern',
ArrayExpression: 'ArrayExpression',
ArrayPattern: 'ArrayPattern',
ArrowFunctionExpression: 'ArrowFunctionExpression',
AwaitExpression: 'AwaitExpression',
BlockStatement: 'BlockStatement',
BinaryExpression: 'BinaryExpression',
BreakStatement: 'BreakStatement',
CallExpression: 'CallExpression',
CatchClause: 'CatchClause',
ChainExpression: 'ChainExpression',
ClassBody: 'ClassBody',
ClassDeclaration: 'ClassDeclaration',
ClassExpression: 'ClassExpression',
ConditionalExpression: 'ConditionalExpression',
ContinueStatement: 'ContinueStatement',
Decorator: 'Decorator',
DoWhileStatement: 'DoWhileStatement',
DebuggerStatement: 'DebuggerStatement',
EmptyStatement: 'EmptyStatement',
ExportAllDeclaration: 'ExportAllDeclaration',
ExportDefaultDeclaration: 'ExportDefaultDeclaration',
ExportNamedDeclaration: 'ExportNamedDeclaration',
ExportSpecifier: 'ExportSpecifier',
ExpressionStatement: 'ExpressionStatement',
ForStatement: 'ForStatement',
ForOfStatement: 'ForOfStatement',
ForInStatement: 'ForInStatement',
FunctionDeclaration: 'FunctionDeclaration',
FunctionExpression: 'FunctionExpression',
Identifier: 'Identifier',
IfStatement: 'IfStatement',
ImportAttribute: 'ImportAttribute',
ImportExpression: 'ImportExpression',
ImportDeclaration: 'ImportDeclaration',
ImportDefaultSpecifier: 'ImportDefaultSpecifier',
ImportNamespaceSpecifier: 'ImportNamespaceSpecifier',
ImportSpecifier: 'ImportSpecifier',
Literal: 'Literal',
LabeledStatement: 'LabeledStatement',
LogicalExpression: 'LogicalExpression',
MemberExpression: 'MemberExpression',
MetaProperty: 'MetaProperty',
MethodDefinition: 'MethodDefinition',
NewExpression: 'NewExpression',
ObjectExpression: 'ObjectExpression',
ObjectPattern: 'ObjectPattern',
Program: 'Program',
Property: 'Property',
PrivateIdentifier: 'PrivateIdentifier',
RestElement: 'RestElement',
ReturnStatement: 'ReturnStatement',
SequenceExpression: 'SequenceExpression',
SpreadElement: 'SpreadElement',
StaticBlock: 'StaticBlock',
Super: 'Super',
SwitchCase: 'SwitchCase',
SwitchStatement: 'SwitchStatement',
TaggedTemplateExpression: 'TaggedTemplateExpression',
TemplateElement: 'TemplateElement',
TemplateLiteral: 'TemplateLiteral',
ThisExpression: 'ThisExpression',
ThrowStatement: 'ThrowStatement',
TryStatement: 'TryStatement',
UnaryExpression: 'UnaryExpression',
UpdateExpression: 'UpdateExpression',
VariableDeclaration: 'VariableDeclaration',
VariableDeclarator: 'VariableDeclarator',
WhileStatement: 'WhileStatement',
WithStatement: 'WithStatement',
YieldExpression: 'YieldExpression'
};
class CommentHandler {
attach;
comments;
stack;
leading;
trailing;
constructor() {
this.attach = !1, this.comments = [], this.stack = [], this.leading = [], this.trailing = [];
}
insertInnerComments(e, t) {
if (e.type === 'BlockStatement' && e.body.length === 0) {
const s = [];
for (let e = this.leading.length - 1; e >= 0; --e) {
const i = this.leading[e];
t.end.offset >= i.start && (s.unshift(i.comment), this.leading.splice(e, 1), this.trailing.splice(e, 1));
}
s.length && (e.innerComments = s);
}
}
findTrailingComments(e) {
let t = [];
if (this.trailing.length > 0) {
for (let s = this.trailing.length - 1; s >= 0; --s) {
const i = this.trailing[s];
i.start >= e.end.offset && t.unshift(i.comment);
}
return this.trailing.length = 0, t;
}
const s = this.stack[this.stack.length - 1];
if (s && s.node.trailingComments) {
const i = s.node.trailingComments[0];
i && i.range[0] >= e.end.offset && (t = s.node.trailingComments, delete s.node.trailingComments);
}
return t;
}
findLeadingComments(e) {
const t = [];
let s;
for (; this.stack.length > 0;) {
const t = this.stack[this.stack.length - 1];
if (!(t && t.start >= e.start.offset)) break;
s = t.node, this.stack.pop();
}
if (s) {
for (let i = (s.leadingComments ? s.leadingComments.length : 0) - 1; i >= 0; --i) {
const r = s.leadingComments[i];
r.range[1] <= e.start.offset && (t.unshift(r), s.leadingComments.splice(i, 1));
}
return s.leadingComments && s.leadingComments.length === 0 && delete s.leadingComments, t;
}
for (let s = this.leading.length - 1; s >= 0; --s) {
const i = this.leading[s];
i.start <= e.start.offset && (t.unshift(i.comment), this.leading.splice(s, 1));
}
return t;
}
visitNode(e, t) {
if (e.type === 'Program' && e.body.length > 0) return;
this.insertInnerComments(e, t);
const s = this.findTrailingComments(t);
const i = this.findLeadingComments(t);
i.length > 0 && (e.leadingComments = i), s.length > 0 && (e.trailingComments = s), this.stack.push({
node: e,
start: t.start.offset
});
}
visitComment(e, t) {
const s = e.type[0] === 'L' ? 'Line' : 'Block';
const i = {
type: s,
value: e.value
};
if (e.range && (i.range = e.range), e.loc && (i.loc = e.loc), this.comments.push(i), this.attach) {
const i = {
comment: {
type: s,
value: e.value,
range: [t.start.offset, t.end.offset]
},
start: t.start.offset
};
e.loc && (i.comment.loc = e.loc), e.type = s, this.leading.push(i), this.trailing.push(i);
}
}
visit(e, t) {
e.type === 'LineComment' || e.type === 'BlockComment' ? this.visitComment(e, t) : this.attach && this.visitNode(e, t);
}
}
const Regex = {
NonAsciiIdentifierStart: /[\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u052F\u0531-\u0556\u0559\u0560-\u0588\u05D0-\u05EA\u05EF-\u05F2\u0620-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u0860-\u086A\u08A0-\u08B4\u08B6-\u08BD\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u09FC\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0AF9\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D\u0C58-\u0C5A\u0C60\u0C61\u0C80\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D54-\u0D56\u0D5F-\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E86-\u0E8A\u0E8C-\u0EA3\u0EA5\u0EA7-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F5\u13F8-\u13FD\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F8\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1878\u1880-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191E\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1C80-\u1C88\u1C90-\u1CBA\u1CBD-\u1CBF\u1CE9-\u1CEC\u1CEE-\u1CF3\u1CF5\u1CF6\u1CFA\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2118-\u211D\u2124\u2126\u2128\u212A-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303C\u3041-\u3096\u309B-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312F\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FEF\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA67F-\uA69D\uA6A0-\uA6EF\uA717-\uA71F\uA722-\uA788\uA78B-\uA7BF\uA7C2-\uA7C6\uA7F7-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA8FD\uA8FE\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF\uA9E0-\uA9E4\uA9E6-\uA9EF\uA9FA-\uA9FE\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA76\uAA7A\uAA7E-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEA\uAAF2-\uAAF4\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB67\uAB70-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]|\uD800[\uDC00-\uDC0B\uDC0D-\uDC26\uDC28-\uDC3A\uDC3C\uDC3D\uDC3F-\uDC4D\uDC50-\uDC5D\uDC80-\uDCFA\uDD40-\uDD74\uDE80-\uDE9C\uDEA0-\uDED0\uDF00-\uDF1F\uDF2D-\uDF4A\uDF50-\uDF75\uDF80-\uDF9D\uDFA0-\uDFC3\uDFC8-\uDFCF\uDFD1-\uDFD5]|\uD801[\uDC00-\uDC9D\uDCB0-\uDCD3\uDCD8-\uDCFB\uDD00-\uDD27\uDD30-\uDD63\uDE00-\uDF36\uDF40-\uDF55\uDF60-\uDF67]|\uD802[\uDC00-\uDC05\uDC08\uDC0A-\uDC35\uDC37\uDC38\uDC3C\uDC3F-\uDC55\uDC60-\uDC76\uDC80-\uDC9E\uDCE0-\uDCF2\uDCF4\uDCF5\uDD00-\uDD15\uDD20-\uDD39\uDD80-\uDDB7\uDDBE\uDDBF\uDE00\uDE10-\uDE13\uDE15-\uDE17\uDE19-\uDE35\uDE60-\uDE7C\uDE80-\uDE9C\uDEC0-\uDEC7\uDEC9-\uDEE4\uDF00-\uDF35\uDF40-\uDF55\uDF60-\uDF72\uDF80-\uDF91]|\uD803[\uDC00-\uDC48\uDC80-\uDCB2\uDCC0-\uDCF2\uDD00-\uDD23\uDF00-\uDF1C\uDF27\uDF30-\uDF45\uDFE0-\uDFF6]|\uD804[\uDC03-\uDC37\uDC83-\uDCAF\uDCD0-\uDCE8\uDD03-\uDD26\uDD44\uDD50-\uDD72\uDD76\uDD83-\uDDB2\uDDC1-\uDDC4\uDDDA\uDDDC\uDE00-\uDE11\uDE13-\uDE2B\uDE80-\uDE86\uDE88\uDE8A-\uDE8D\uDE8F-\uDE9D\uDE9F-\uDEA8\uDEB0-\uDEDE\uDF05-\uDF0C\uDF0F\uDF10\uDF13-\uDF28\uDF2A-\uDF30\uDF32\uDF33\uDF35-\uDF39\uDF3D\uDF50\uDF5D-\uDF61]|\uD805[\uDC00-\uDC34\uDC47-\uDC4A\uDC5F\uDC80-\uDCAF\uDCC4\uDCC5\uDCC7\uDD80-\uDDAE\uDDD8-\uDDDB\uDE00-\uDE2F\uDE44\uDE80-\uDEAA\uDEB8\uDF00-\uDF1A]|\uD806[\uDC00-\uDC2B\uDCA0-\uDCDF\uDCFF\uDDA0-\uDDA7\uDDAA-\uDDD0\uDDE1\uDDE3\uDE00\uDE0B-\uDE32\uDE3A\uDE50\uDE5C-\uDE89\uDE9D\uDEC0-\uDEF8]|\uD807[\uDC00-\uDC08\uDC0A-\uDC2E\uDC40\uDC72-\uDC8F\uDD00-\uDD06\uDD08\uDD09\uDD0B-\uDD30\uDD46\uDD60-\uDD65\uDD67\uDD68\uDD6A-\uDD89\uDD98\uDEE0-\uDEF2]|\uD808[\uDC00-\uDF99]|\uD809[\uDC00-\uDC6E\uDC80-\uDD43]|[\uD80C\uD81C-\uD820\uD840-\uD868\uD86A-\uD86C\uD86F-\uD872\uD874-\uD879][\uDC00-\uDFFF]|\uD80D[\uDC00-\uDC2E]|\uD811[\uDC00-\uDE46]|\uD81A[\uDC00-\uDE38\uDE40-\uDE5E\uDED0-\uDEED\uDF00-\uDF2F\uDF40-\uDF43\uDF63-\uDF77\uDF7D-\uDF8F]|\uD81B[\uDE40-\uDE7F\uDF00-\uDF4A\uDF50\uDF93-\uDF9F\uDFE0\uDFE1\uDFE3]|\uD821[\uDC00-\uDFF7]|\uD822[\uDC00-\uDEF2]|\uD82C[\uDC00-\uDD1E\uDD50-\uDD52\uDD64-\uDD67\uDD70-\uDEFB]|\uD82F[\uDC00-\uDC6A\uDC70-\uDC7C\uDC80-\uDC88\uDC90-\uDC99]|\uD835[\uDC00-\uDC54\uDC56-\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDEA5\uDEA8-\uDEC0\uDEC2-\uDEDA\uDEDC-\uDEFA\uDEFC-\uDF14\uDF16-\uDF34\uDF36-\uDF4E\uDF50-\uDF6E\uDF70-\uDF88\uDF8A-\uDFA8\uDFAA-\uDFC2\uDFC4-\uDFCB]|\uD838[\uDD00-\uDD2C\uDD37-\uDD3D\uDD4E\uDEC0-\uDEEB]|\uD83A[\uDC00-\uDCC4\uDD00-\uDD43\uDD4B]|\uD83B[\uDE00-\uDE03\uDE05-\uDE1F\uDE21\uDE22\uDE24\uDE27\uDE29-\uDE32\uDE34-\uDE37\uDE39\uDE3B\uDE42\uDE47\uDE49\uDE4B\uDE4D-\uDE4F\uDE51\uDE52\uDE54\uDE57\uDE59\uDE5B\uDE5D\uDE5F\uDE61\uDE62\uDE64\uDE67-\uDE6A\uDE6C-\uDE72\uDE74-\uDE77\uDE79-\uDE7C\uDE7E\uDE80-\uDE89\uDE8B-\uDE9B\uDEA1-\uDEA3\uDEA5-\uDEA9\uDEAB-\uDEBB]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D\uDC20-\uDFFF]|\uD873[\uDC00-\uDEA1\uDEB0-\uDFFF]|\uD87A[\uDC00-\uDFE0]|\uD87E[\uDC00-\uDE1D]/,
// eslint-disable-next-line no-misleading-character-class
NonAsciiIdentifierPart: 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};
const Character = {
fromCodePoint: e => (e < 65536 ? String.fromCharCode(e) : String.fromCharCode(55296 + (e - 65536 >> 10)) + String.fromCharCode(56320 + (e - 65536 & 1023))),
isStringWellFormedUnicode(e) {
for (let t = 0; t < e.length; t++) {
let s = e.charCodeAt(t);
if (s >= 55296 && s <= 56319) {
if (t === e.length - 1) return !1;
if (t++, s = e.charCodeAt(t), s < 56320 && s > 57343) return !1;
} else if (s >= 56320 && s <= 57343) return !1;
}
return !0;
},
isWhiteSpace: e => e === 32 || e === 9 || e === 11 || e === 12 || e === 160 || e >= 5760 && [5760, 8192, 8193, 8194, 8195, 8196, 8197, 8198, 8199, 8200, 8201, 8202, 8239, 8287, 12288, 65279].indexOf(e) >= 0,
isLineTerminator: e => e === 10 || e === 13 || e === 8232 || e === 8233,
isIdentifierStart: e => e === 36 || e === 95 || e >= 65 && e <= 90 || e >= 97 && e <= 122 || e === 92 || e >= 128 && Regex.NonAsciiIdentifierStart.test(Character.fromCodePoint(e)),
isIdentifierPart: e => e === 36 || e === 95 || e >= 65 && e <= 90 || e >= 97 && e <= 122 || e >= 48 && e <= 57 || e === 92 || e >= 128 && Regex.NonAsciiIdentifierPart.test(Character.fromCodePoint(e)),
isDecimalDigit: e => e >= 48 && e <= 57,
isDecimalDigitChar: e => e.length === 1 && Character.isDecimalDigit(e.charCodeAt(0)),
isHexDigit: e => e >= 48 && e <= 57 || e >= 65 && e <= 70 || e >= 97 && e <= 102,
isHexDigitChar: e => e.length === 1 && Character.isHexDigit(e.charCodeAt(0)),
isOctalDigit: e => e >= 48 && e <= 55,
isOctalDigitChar: e => e.length === 1 && Character.isOctalDigit(e.charCodeAt(0))
};
class JSXClosingElement {
type;
name;
constructor(e) {
this.type = 'JSXClosingElement', this.name = e;
}
}
const JSXClosingFragment = class {
type;
constructor() {
this.type = 'JSXClosingFragment';
}
};
const JSXElement = class {
type;
openingElement;
children;
closingElement;
constructor(e, t, s) {
this.type = 'JSXElement', this.openingElement = e, this.children = t, this.closingElement = s;
}
};
const JSXEmptyExpression = class {
type;
constructor() {
this.type = 'JSXEmptyExpression';
}
};
const JSXExpressionContainer = class {
type;
expression;
constructor(e) {
this.type = 'JSXExpressionContainer', this.expression = e;
}
};
const JSXIdentifier = class {
type;
name;
constructor(e) {
this.type = 'JSXIdentifier', this.name = e;
}
};
const JSXMemberExpression = class {
type;
object;
property;
constructor(e, t) {
this.type = 'JSXMemberExpression', this.object = e, this.property = t;
}
};
const JSXAttribute = class {
type;
name;
value;
constructor(e, t) {
this.type = 'JSXAttribute', this.name = e, this.value = t;
}
};
const JSXNamespacedName = class {
type;
namespace;
name;
constructor(e, t) {
this.type = 'JSXNamespacedName', this.namespace = e, this.name = t;
}
};
const JSXOpeningElement = class {
type;
name;
selfClosing;
attributes;
constructor(e, t, s) {
this.type = 'JSXOpeningElement', this.name = e, this.selfClosing = t, this.attributes = s;
}
};
const JSXOpeningFragment = class {
type;
selfClosing;
constructor(e) {
this.type = 'JSXOpeningFragment', this.selfClosing = e;
}
};
const JSXSpreadAttribute = class {
type;
argument;
constructor(e) {
this.type = 'JSXSpreadAttribute', this.argument = e;
}
};
const JSXText = class {
type;
value;
raw;
constructor(e, t) {
this.type = 'JSXText', this.value = e, this.raw = t;
}
};
const ArrayExpression = class {
type;
elements;
constructor(e) {
this.type = 'ArrayExpression', this.elements = e;
}
};
const ArrayPattern = class {
type;
elements;
constructor(e) {
this.type = 'ArrayPattern', this.elements = e;
}
};
const ArrowFunctionExpression = class {
type;
id;
params;
body;
generator;
expression;
async;
constructor(e, t, s, i) {
this.type = 'ArrowFunctionExpression', this.id = null, this.params = e, this.body = t, this.generator = !1, this.expression = s, this.async = i;
}
};
const AssignmentExpression = class {
type;
operator;
left;
right;
constructor(e, t, s) {
this.type = 'AssignmentExpression', this.operator = e, this.left = t, this.right = s;
}
};
const AssignmentPattern = class {
type;
left;
right;
constructor(e, t) {
this.type = 'AssignmentPattern', this.left = e, this.right = t;
}
};
const AsyncFunctionDeclaration = class {
type;
id;
params;
body;
generator;
expression;
async;
constructor(e, t, s, i) {
this.type = 'FunctionDeclaration', this.id = e, this.params = t, this.body = s, this.generator = i, this.expression = !1, this.async = !0;
}
};
const AwaitExpression = class {
type;
argument;
constructor(e) {
this.type = 'AwaitExpression', this.argument = e;
}
};
const BigIntLiteral = class {
type;
value;
raw;
bigint;
constructor(e, t, s) {
this.type = 'Literal', this.value = e, this.raw = t, this.bigint = s;
}
};
const BinaryExpression = class {
type;
operator;
left;
right;
constructor(e, t, s) {
this.type = 'BinaryExpression', this.operator = e, this.left = t, this.right = s;
}
};
const BlockStatement = class {
type;
body;
constructor(e) {
this.type = 'BlockStatement', this.body = e;
}
};
const BreakStatement = class {
type;
label;
constructor(e) {
this.type = 'BreakStatement', this.label = e;
}
};
const CallExpression = class {
type;
callee;
arguments;
optional;
constructor(e, t, s) {
this.type = 'CallExpression', this.callee = e, this.arguments = t, this.optional = s;
}
};
const CatchClause = class {
type;
param;
body;
constructor(e, t) {
this.type = 'CatchClause', this.param = e, this.body = t;
}
};
const ChainExpression = class {
type;
expression;
constructor(e) {
this.type = 'ChainExpression', this.expression = e;
}
};
const ClassBody = class {
type;
body;
constructor(e) {
this.type = 'ClassBody', this.body = e;
}
};
const ClassDeclaration = class {
type;
id;
superClass;
body;
decorators;
constructor(e, t, s, i) {
this.type = 'ClassDeclaration', this.id = e, this.superClass = t, this.body = s, this.decorators = i;
}
};
const ClassExpression = class {
type;
id;
superClass;
body;
decorators;
constructor(e, t, s, i) {
this.type = 'ClassExpression', this.id = e, this.superClass = t, this.body = s, this.decorators = i;
}
};
const ConditionalExpression = class {
type;
test;
consequent;
alternate;
constructor(e, t, s) {
this.type = 'ConditionalExpression', this.test = e, this.consequent = t, this.alternate = s;
}
};
const ContinueStatement = class {
type;
label;
constructor(e) {
this.type = 'ContinueStatement', this.label = e;
}
};
const DebuggerStatement = class {
type;
constructor() {
this.type = 'DebuggerStatement';
}
};
const Decorator = class {
type;
expression;
constructor(e) {
this.type = 'Decorator', this.expression = e;
}
};
const Directive = class {
type;
expression;
directive;
constructor(e, t) {
this.type = 'ExpressionStatement', this.expression = e, this.directive = t;
}
};
const DoWhileStatement = class {
type;
body;
test;
constructor(e, t) {
this.type = 'DoWhileStatement', this.body = e, this.test = t;
}
};
const EmptyStatement = class {
type;
constructor() {
this.type = 'EmptyStatement';
}
};
const ExportAllDeclaration = class {
type;
source;
exported;
assertions;
constructor(e, t, s) {
this.type = 'ExportAllDeclaration', this.source = e, this.exported = t, this.assertions = s;
}
};
const ExportDefaultDeclaration = class {
type;
declaration;
constructor(e) {
this.type = 'ExportDefaultDeclaration', this.declaration = e;
}
};
const ExportNamedDeclaration = class {
type;
declaration;
specifiers;
source;
assertions;
constructor(e, t, s, i) {
this.type = 'ExportNamedDeclaration', this.declaration = e, this.specifiers = t, this.source = s, this.assertions = i;
}
};
const ExportSpecifier = class {
type;
exported;
local;
constructor(e, t) {
this.type = 'ExportSpecifier', this.exported = t, this.local = e;
}
};
const ExpressionStatement = class {
type;
expression;
constructor(e) {
this.type = 'ExpressionStatement', this.expression = e;
}
};
const ForInStatement = class {
type;
left;
right;
body;
each;
constructor(e, t, s) {
this.type = 'ForInStatement', this.left = e, this.right = t, this.body = s, this.each = !1;
}
};
const ForOfStatement = class {
type;
await;
left;
right;
body;
constructor(e, t, s, i) {
this.type = 'ForOfStatement', this.await = i, this.left = e, this.right = t, this.body = s;
}
};
const ForStatement = class {
type;
init;
test;
update;
body;
constructor(e, t, s, i) {
this.type = 'ForStatement', this.init = e, this.test = t, this.update = s, this.body = i;
}
};
const FunctionDeclaration = class {
type;
id;
params;
body;
generator;
expression;
async;
constructor(e, t, s, i) {
this.type = 'FunctionDeclaration', this.id = e, this.params = t, this.body = s, this.generator = i, this.expression = !1, this.async = !1;
}
};
const FunctionExpression = class {
type;
id;
params;
body;
generator;
expression;
async;
constructor(e, t, s, i, r) {
this.type = 'FunctionExpression', this.id = e, this.params = t, this.body = s, this.generator = i, this.expression = !1, this.async = r;
}
};
const Identifier = class {
type;
name;
constructor(e) {
this.type = 'Identifier', this.name = e;
}
};
const IfStatement = class {
type;
test;
consequent;
alternate;
constructor(e, t, s) {
this.type = 'IfStatement', this.test = e, this.consequent = t, this.alternate = s;
}
};
const ImportAttribute = class {
type;
key;
value;
constructor(e, t) {
this.type = 'ImportAttribute', this.key = e, this.value = t;
}
};
const ImportExpression = class {
type;
source;
attributes;
constructor(e, t) {
this.type = 'ImportExpression', this.source = e, this.attributes = t;
}
};
const ImportDeclaration = class {
type;
specifiers;
source;
assertions;
constructor(e, t, s) {
this.type = 'ImportDeclaration', this.specifiers = e, this.source = t, this.assertions = s;
}
};
const ImportDefaultSpecifier = class {
type;
local;
constructor(e) {
this.type = 'ImportDefaultSpecifier', this.local = e;
}
};
const ImportNamespaceSpecifier = class {
type;
local;
constructor(e) {
this.type = 'ImportNamespaceSpecifier', this.local = e;
}
};
const ImportSpecifier = class {
type;
local;
imported;
constructor(e, t) {
this.type = 'ImportSpecifier', this.local = e, this.imported = t;
}
};
const LabeledStatement = class {
type;
label;
body;
constructor(e, t) {
this.type = 'LabeledStatement', this.label = e, this.body = t;
}
};
const Literal = class {
type;
value;
raw;
constructor(e, t) {
this.type = 'Literal', this.value = e, this.raw = t;
}
};
const LogicalExpression = class {
type;
operator;
left;
right;
constructor(e, t, s) {
this.type = 'LogicalExpression', this.operator = e, this.left = t, this.right = s;
}
};
const MemberExpression = class {
type;
computed;
object;
property;
optional;
constructor(e, t, s, i) {
this.type = 'MemberExpression', this.computed = e, this.object = t, this.property = s, this.optional = i;
}
};
const MetaProperty = class {
type;
meta;
property;
constructor(e, t) {
this.type = 'MetaProperty', this.meta = e, this.property = t;
}
};
const MethodDefinition = class {
type;
key;
computed;
value;
kind;
static;
decorators;
constructor(e, t, s, i, r, n) {
this.type = 'MethodDefinition', this.key = e, this.computed = t, this.value = s, this.kind = i, this.static = r, this.decorators = n;
}
};
const Module = class {
type;
body;
sourceType;
constructor(e) {
this.type = 'Program', this.body = e, this.sourceType = 'module';
}
};
const NewExpression = class {
type;
callee;
arguments;
constructor(e, t) {
this.type = 'NewExpression', this.callee = e, this.arguments = t;
}
};
const ObjectExpression = class {
type;
properties;
constructor(e) {
this.type = 'ObjectExpression', this.properties = e;
}
};
const ObjectPattern = class {
type;
properties;
constructor(e) {
this.type = 'ObjectPattern', this.properties = e;
}
};
const PrivateIdentifier = class {
type;
name;
constructor(e) {
this.type = 'PrivateIdentifier', this.name = e;
}
};
const Program = class {
type;
body;
sourceType;
constructor(e, t) {
this.type = 'Program', this.sourceType = e, this.body = t;
}
};
const Property = class {
type;
key;
computed;
value;
kind;
method;
shorthand;
constructor(e, t, s, i, r, n) {
this.type = 'Property', this.key = t, this.computed = s, this.value = i, this.kind = e, this.method = r, this.shorthand = n;
}
};
const PropertyDefinition = class {
type;
key;
computed;
value;
static;
decorators;
constructor(e, t, s, i, r) {
this.type = 'Property', this.key = e, this.computed = t, this.value = s, this.static = i, this.decorators = r;
}
};
const RegexLiteral = class {
type;
value;
raw;
regex;
constructor(e, t, s, i) {
this.type = 'Literal', this.value = e, this.raw = t, this.regex = {
pattern: s,
flags: i
};
}
};
const RestElement = class {
type;
argument;
constructor(e) {
this.type = 'RestElement', this.argument = e;
}
};
const ReturnStatement = class {
type;
argument;
constructor(e) {
this.type = 'ReturnStatement', this.argument = e;
}
};
const Script = class {
type;
body;
sourceType;
constructor(e) {
this.type = 'Program', this.body = e, this.sourceType = 'script';
}
};
const SequenceExpression = class {
type;
expressions;
constructor(e) {
this.type = 'SequenceExpression', this.expressions = e;
}
};
const SpreadElement = class {
type;
argument;
constructor(e) {
this.type = 'SpreadElement', this.argument = e;
}
};
const StaticBlock = class {
type;
body;
constructor(e) {
this.type = 'StaticBlock', this.body = e;
}
};
const Super = class {
type;
constructor() {
this.type = 'Super';
}
};
const SwitchCase = class {
type;
test;
consequent;
constructor(e, t) {
this.type = 'SwitchCase', this.test = e, this.consequent = t;
}
};
const SwitchStatement = class {
type;
discriminant;
cases;
constructor(e, t) {
this.type = 'SwitchStatement', this.discriminant = e, this.cases = t;
}
};
const TaggedTemplateExpression = class {
type;
tag;
quasi;
constructor(e, t) {
this.type = 'TaggedTemplateExpression', this.tag = e, this.quasi = t;
}
};
const TemplateElement = class {
type;
value;
tail;
constructor(e, t) {
this.type = 'TemplateElement', this.value = e, this.tail = t;
}
};
const TemplateLiteral = class {
type;
quasis;
expressions;
constructor(e, t) {
this.type = 'TemplateLiteral', this.quasis = e, this.expressions = t;
}
};
const ThisExpression = class {
type;
constructor() {
this.type = 'ThisExpression';
}
};
const ThrowStatement = class {
type;
argument;
constructor(e) {
this.type = 'ThrowStatement', this.argument = e;
}
};
const TryStatement = class {
type;
block;
handler;
finalizer;
constructor(e, t, s) {
this.type = 'TryStatement', this.block = e, this.handler = t, this.finalizer = s;
}
};
const UnaryExpression = class {
type;
operator;
argument;
prefix;
constructor(e, t) {
this.type = 'UnaryExpression', this.operator = e, this.argument = t, this.prefix = !0;
}
};
const UpdateExpression = class {
type;
operator;
argument;
prefix;
constructor(e, t, s) {
this.type = 'UpdateExpression', this.operator = e, this.argument = t, this.prefix = s;
}
};
const VariableDeclaration = class {
type;
declarations;
kind;
constructor(e, t) {
this.type = 'VariableDeclaration', this.declarations = e, this.kind = t;
}
};
const VariableDeclarator = class {
type;
id;
init;
constructor(e, t) {
this.type = 'VariableDeclarator', this.id = e, this.init = t;
}
};
const WhileStatement = class {
type;
test;
body;
constructor(e, t) {
this.type = 'WhileStatement', this.test = e, this.body = t;
}
};
const WithStatement = class {
type;
object;
body;
constructor(e, t) {
this.type = 'WithStatement', this.object = e, this.body = t;
}
};
const YieldExpression = class {
type;
argument;
delegate;
constructor(e, t) {
this.type = 'YieldExpression', this.argument = e, this.delegate = t;
}
};
function assert(e, t) {
if (!e) throw new Error(`ASSERT: ${t}`);
}
const ErrorHandler = class {
errors;
tolerant;
constructor() {
this.errors = [], this.tolerant = !1;
}
recordError(e) {
this.errors.push(e);
}
tolerate(e) {
if (!this.tolerant) throw e;
this.recordError(e);
}
constructError(e, t) {
let s = new Error(e);
try {
throw s;
} catch (e) {
Object.create && Object.defineProperty && (s = Object.create(e), Object.defineProperty(s, 'column', {
value: t
}));
}
return s;
}
createError(e, t, s, i) {
const r = `Line ${t}: ${i}`;
const n = this.constructError(r, s);
n.index = e, n.lineNumber = t, n.description = i;
return n;
}
throwError(e, t, s, i) {
throw this.createError(e, t, s, i);
}
tolerateError(e, t, s, i) {
const r = this.createError(e, t, s, i);
if (!this.tolerant) throw r;
this.recordError(r);
}
};
const Messages = {
AsyncFunctionInSingleStatementContext: 'Async functions can only be declared at the top level or inside a block.',
BadImportCallArity: 'Unexpected token',
BadGetterArity: 'Getter must not have any formal parameters',
BadSetterArity: 'Setter must have exactly one formal parameter',
BadSetterRestParameter: 'Setter function argument must not be a rest parameter',
CannotUseImportMetaOutsideAModule: "Cannot use 'import.meta' outside a module",
ConstructorIsAsync: 'Class constructor may not be an async method',
ConstructorIsPrivate: 'Class constructor may not be a private method',
ConstructorSpecialMethod: 'Class constructor may not be an accessor',
DeclarationMissingInitializer: 'Missing initializer in %0 declaration',
DefaultRestParameter: 'Unexpected token =',
DefaultRestProperty: 'Unexpected token =',
DuplicateBinding: 'Duplicate binding %0',
DuplicateConstructor: 'A class may only have one constructor',
DuplicateParameter: 'Duplicate parameter name not allowed in this context',
DuplicateProtoProperty: 'Duplicate __proto__ fields are not allowed in object literals',
ForInOfLoopInitializer: '%0 loop variable declaration may not have an initializer',
GeneratorInLegacyContext: 'Generator declarations are not allowed in legacy contexts',
IllegalBreak: 'Illegal break statement',
IllegalContinue: 'Illegal continue statement',
IllegalExportDeclaration: 'Unexpected token',
IllegalImportDeclaration: 'Unexpected token',
IllegalLanguageModeDirective: "Illegal 'use strict' directive in function with non-simple parameter list",
IllegalReturn: 'Illegal return statement',
InvalidEscapedReservedWord: 'Keyword must not contain escaped characters',
InvalidHexEscapeSequence: 'Invalid hexadecimal escape sequence',
InvalidLHSInAssignment: 'Invalid left-hand side in assignment',
InvalidLHSInForIn: 'Invalid left-hand side in for-in',
InvalidLHSInForLoop: 'Invalid left-hand side in for-loop',
InvalidModuleSpecifier: 'Unexpected token',
InvalidRegExp: 'Invalid regular expression',
InvalidTaggedTemplateOnOptionalChain: 'Invalid tagged template on optional chain',
InvalidUnicodeEscapeSequence: 'Invalid Unicode escape sequence',
LetInLexicalBinding: 'let is disallowed as a lexically bound name',
MissingFromClause: 'Unexpected token',
MultipleDefaultsInSwitch: 'More than one default clause in switch statement',
NewlineAfterThrow: 'Illegal newline after throw',
NoAsAfterImportNamespace: 'Unexpected token',
NoAsAndFromEscapeSequences: 'The `as` and `from` contextual keywords must not contain Unicode escape sequences.',
NoCatchOrFinally: 'Missing catch or finally after try',
NoSemicolonAfterDecorator: 'Decorators must not be followed by a semicolon.',
NumericSeperatorOneUnderscore: 'Numeric separator must be exactly one underscore',
NumericSeperatorNotAllowedHere: 'Numeric separator is not allowed here',
ParameterAfterRestParameter: 'Rest parameter must be last formal parameter',
PropertyAfterRestProperty: 'Unexpected token',
Redeclaration: "%0 '%1' has already been declared",
StaticPrototype: 'Classes may not have static property named prototype',
StrictCatchVariable: 'Catch variable may not be eval or arguments in strict mode',
StrictDelete: 'Delete of an unqualified identifier in strict mode.',
StrictFunction: 'In strict mode code, functions can only be declared at top level or inside a block',
StrictFunctionName: 'Function name may not be eval or arguments in strict mode',
StrictLHSAssignment: 'Assignment to eval or arguments is not allowed in strict mode',
StrictLHSPostfix: 'Postfix increment/decrement may not have eval or arguments operand in strict mode',
StrictLHSPrefix: 'Prefix increment/decrement may not have eval or arguments operand in strict mode',
StrictModeWith: 'Strict mode code may not include a with statement',
StrictOctalLiteral: 'Octal literals are not allowed in strict mode.',
StrictParamName: 'Parameter name eval or arguments is not allowed in strict mode',
StrictReservedWord: 'Use of future reserved word in strict mode',
StrictVarName: 'Variable name may not be eval or arguments in strict mode',
TemplateOctalLiteral: 'Octal literals are not allowed in template strings.',
TemplateEscape89: '\\8 and \\9 are not allowed in template strings.',
UnexpectedEOS: 'Unexpected end of input',
UnexpectedIdentifier: 'Unexpected identifier',
UnexpectedNumber: 'Unexpected number',
UnexpectedReserved: 'Unexpected reserved word',
UnexpectedString: 'Unexpected string',
UnexpectedSuper: "'super' keyword unexpected here",
UnexpectedTemplate: 'Unexpected quasi %0',
UnexpectedToken: 'Unexpected token %0',
UnexpectedTokenIllegal: 'Unexpected token ILLEGAL',
UnknownLabel: "Undefined label '%0'",
UnterminatedRegExp: 'Invalid regular expression: missing /'
};
const TokenName = {};
function hexValue(e) {
return '0123456789abcdef'.indexOf(e.toLowerCase());
}
function octalValue(e) {
return '01234567'.indexOf(e);
}
TokenName[1] = 'Boolean', TokenName[2] = '<end>', TokenName[3] = 'Identifier', TokenName[4] = 'Keyword', TokenName[5] = 'Null', TokenName[6] = 'Numeric', TokenName[7] = 'Punctuator', TokenName[8] = 'String', TokenName[9] = 'RegularExpression', TokenName[10] = 'Template';
const Scanner = class {
source;
errorHandler;
trackComment;
isModule;
index;
lineNumber;
lineStart;
curlyStack;
length;
constructor(e, t) {
this.source = e, this.errorHandler = t, this.trackComment = !1, this.isModule = !1, this.length = e.length, this.index = 0, this.lineNumber = e.length > 0 ? 1 : 0, this.lineStart = 0, this.curlyStack = [];
}
saveState() {
return {
index: this.index,
lineNumber: this.lineNumber,
lineStart: this.lineStart,
curlyStack: this.curlyStack.slice()
};
}
restoreState(e) {
this.index = e.index, this.lineNumber = e.lineNumber, this.lineStart = e.lineStart, this.curlyStack = e.curlyStack;
}
eof() {
return this.index >= this.length;
}
throwUnexpectedToken(e = Messages.UnexpectedTokenIllegal) {
return this.errorHandler.throwError(this.index, this.lineNumber, this.index - this.lineStart + 1, e);
}
tolerateUnexpectedToken(e = Messages.UnexpectedTokenIllegal) {
this.errorHandler.tolerateError(this.index, this.lineNumber, this.index - this.lineStart + 1, e);
}
skipSingleLineComment(e) {
let t; let s; let
i = [];
for (this.trackComment && (i = [], t = this.index - e, s = {
start: {
line: this.lineNumber,
column: this.index - this.lineStart - e
},
end: {}
}); !this.eof();) {
const r = this.source.charCodeAt(this.index);
if (++this.index, Character.isLineTerminator(r)) {
if (this.trackComment) {
s.end = {
line: this.lineNumber,
column: this.index - this.lineStart - 1
};
const r = {
multiLine: !1,
slice: [t + e, this.index - 1],
range: [t, this.index - 1],
loc: s
};
i.push(r);
}
return r === 13 && this.source.charCodeAt(this.index) === 10 && ++this.index, ++this.lineNumber, this.lineStart = this.index, i;
}
}
if (this.trackComment) {
s.end = {
line: this.lineNumber,
column: this.index - this.lineStart
};
const r = {
multiLine: !1,
slice: [t + e, this.index],
range: [t, this.index],
loc: s
};
i.push(r);
}
return i;
}
skipMultiLineComment() {
let e; let t; let
s = [];
for (this.trackComment && (s = [], e = this.index - 2, t = {
start: {
line: this.lineNumber,
column: this.index - this.lineStart - 2
},
end: {}
}); !this.eof();) {
const i = this.source.charCodeAt(this.index);
if (Character.isLineTerminator(i)) i === 13 && this.source.charCodeAt(this.index + 1) === 10 && ++this.index, ++this.lineNumber, ++this.index, this.lineStart = this.index;
else if (i === 42) {
if (this.source.charCodeAt(this.index + 1) === 47) {
if (this.index += 2, this.trackComment) {
t.end = {
line: this.lineNumber,
column: this.index - this.lineStart
};
const i = {
multiLine: !0,
slice: [e + 2, this.index - 2],
range: [e, this.index],
loc: t
};
s.push(i);
}
return s;
}++this.index;
} else ++this.index;
}
if (this.trackComment) {
t.end = {
line: this.lineNumber,
column: this.index - this.lineStart
};
const i = {
multiLine: !0,
slice: [e + 2, this.index],
range: [e, this.index],
loc: t
};
s.push(i);
}
return this.tolerateUnexpectedToken(), s;
}
scanComments() {
let e;
this.trackComment && (e = []);
let t = this.index === 0;
for (; !this.eof();) {
let s = this.source.charCodeAt(this.index);
if (Character.isWhiteSpace(s)) ++this.index;
else if (Character.isLineTerminator(s)) ++this.index, s === 13 && this.source.charCodeAt(this.index) === 10 && ++this.index, ++this.lineNumber, this.lineStart = this.index, t = !0;
else if (s === 47) {
if (s = this.source.charCodeAt(this.index + 1), s === 47) {
this.index += 2;
const s = this.skipSingleLineComment(2);
this.trackComment && (e = e.concat(s)), t = !0;
} else {
if (s !== 42) break;
{
this.index += 2;
const t = this.skipMultiLineComment();
this.trackComment && (e = e.concat(t));
}
}
} else if (t && s === 45) {
if (this.source.charCodeAt(this.index + 1) !== 45 || this.source.charCodeAt(this.index + 2) !== 62) break;
{
this.index += 3;
const t = this.skipSingleLineComment(3);
this.trackComment && (e = e.concat(t));
}
} else {
if (s !== 60 || this.isModule) break;
if (this.source.slice(this.index + 1, this.index + 4) !== '!--') break;
{
this.index += 4;
const t = this.skipSingleLineComment(4);
this.trackComment && (e = e.concat(t));
}
}
}
return e;
}
isFutureReservedWord(e) {
switch (e) {
case 'enum':
case 'export':
case 'import':
case 'super':
return !0;
default:
return !1;
}
}
isStrictModeReservedWord(e) {
switch (e) {
case 'implements':
case 'interface':
case 'package':
case 'private':
case 'protected':
case 'public':
case 'static':
case 'yield':
case 'let':
return !0;
default:
return !1;
}
}
isRestrictedWord(e) {
return e === 'eval' || e === 'arguments';
}
isKeyword(e) {
switch (e.length) {
case 2:
return e === 'if' || e === 'in' || e === 'do';
case 3:
return e === 'var' || e === 'for' || e === 'new' || e === 'try' || e === 'let';
case 4:
return e === 'this' || e === 'else' || e === 'case' || e === 'void' || e === 'with' || e === 'enum';
case 5:
return e === 'while' || e === 'break' || e === 'catch' || e === 'throw' || e === 'const' || e === 'yield' || e === 'class' || e === 'super';
case 6:
return e === 'return' || e === 'typeof' || e === 'delete' || e === 'switch' || e === 'export' || e === 'import';
case 7:
return e === 'default' || e === 'finally' || e === 'extends';
case 8:
return e === 'function' || e === 'continue' || e === 'debugger';
case 10:
return e === 'instanceof';
default:
return !1;
}
}
codePointAt(e) {
let t = this.source.charCodeAt(e);
if (t >= 55296 && t <= 56319) {
const s = this.source.charCodeAt(e + 1);
if (s >= 56320 && s <= 57343) {
t = 1024 * (t - 55296) + s - 56320 + 65536;
}
}
return t;
}
scanHexEscape(e) {
const t = e === 'u' ? 4 : 2;
let s = 0;
for (let e = 0; e < t; ++e) {
if (this.eof() || !Character.isHexDigit(this.source.charCodeAt(this.index))) return null;
s = 16 * s + hexValue(this.source[this.index++]);
}
return String.fromCharCode(s);
}
tryToScanUnicodeCodePointEscape() {
let e = this.source[this.index];
let t = 0;
if (e === '}') return null;
for (; !this.eof() && (e = this.source[this.index++], Character.isHexDigit(e.charCodeAt(0)));) t = 16 * t + hexValue(e);
return t > 1114111 || e !== '}' ? null : Character.fromCodePoint(t);
}
scanUnicodeCodePointEscape() {
const e = this.tryToScanUnicodeCodePointEscape();
return e === null ? this.throwUnexpectedToken() : e;
}
getIdentifier() {
const e = this.index++;
for (; !this.eof();) {
const t = this.source.charCodeAt(this.index);
if (t === 92) return this.index = e, this.getComplexIdentifier();
if (t >= 55296 && t < 57343) return this.index = e, this.getComplexIdentifier();
if (!Character.isIdentifierPart(t)) break;
++this.index;
}
return this.source.slice(e, this.index);
}
getComplexIdentifier() {
let e; let t = this.codePointAt(this.index);
let s = Character.fromCodePoint(t);
for (this.index += s.length, t === 92 && (this.source.charCodeAt(this.index) !== 117 && this.throwUnexpectedToken(), ++this.index, this.source[this.index] === '{' ? (++this.index, e = this.scanUnicodeCodePointEscape()) : (e = this.scanHexEscape('u'), e !== null && e !== '\\' && Character.isIdentifierStart(e.charCodeAt(0)) || this.throwUnexpectedToken()), s = e); !this.eof() && (t = this.codePointAt(this.index), Character.isIdentifierPart(t));) e = Character.fromCodePoint(t), s += e, this.index += e.length, t === 92 && (s = s.substr(0, s.length - 1), this.source.charCodeAt(this.index) !== 117 && this.throwUnexpectedToken(), ++this.index, this.source[this.index] === '{' ? (++this.index, e = this.scanUnicodeCodePointEscape()) : (e = this.scanHexEscape('u'), e !== null && e !== '\\' && Character.isIdentifierPart(e.charCodeAt(0)) || this.throwUnexpectedToken()), s += e);
return s;
}
octalToDecimal(e) {
let t = e !== '0';
let s = octalValue(e);
return !this.eof() && Character.isOctalDigit(this.source.charCodeAt(this.index)) && (t = !0, s = 8 * s + octalValue(this.source[this.index++]), '0123'.indexOf(e) >= 0 && !this.eof() && Character.isOctalDigit(this.source.charCodeAt(this.index)) && (s = 8 * s + octalValue(this.source[this.index++]))), {
code: s,
octal: t
};
}
scanIdentifier() {
let e;
const t = this.index;
const s = this.source.charCodeAt(t) === 92;
const i = s ? this.getComplexIdentifier() : this.getIdentifier();
if (e = i.length === 1 ? 3 : this.isKeyword(i) ? 4 : i === 'null' ? 5 : i === 'true' || i === 'false' ? 1 : 3, e !== 3 && t + i.length !== this.index) {
const e = this.index;
this.index = t, this.tolerateUnexpectedToken(Messages.InvalidEscapedReservedWord), this.index = e;
}
return {
type: e,
value: i,
lineNumber: this.lineNumber,
lineStart: this.lineStart,
start: t,
end: this.index,
escaped: s
};
}
scanPunctuator() {
const e = this.index;
let t = this.source[this.index];
switch (t) {
case '(':
case '{':
t === '{' && this.curlyStack.push('{'), ++this.index;
break;
case '.':
++this.index, this.source[this.index] === '.' && this.source[this.index + 1] === '.' && (this.index += 2, t = '...');
break;
case '}':
++this.index, this.curlyStack.pop();
break;
case '?':
++this.index, this.source[this.index] === '?' && (++this.index, this.source[this.index] === '=' ? (++this.index, t = '??=') : t = '??'), this.source[this.index] !== '.' || /^\d$/.test(this.source[this.index + 1]) || (++this.index, t = '?.');
break;
case '#':
case ')':
case ';':
case ',':
case '[':
case ']':
case ':':
case '~':
case '@':
++this.index;
break;
default:
t = this.source.substr(this.index, 4), t === '>>>=' ? this.index += 4 : (t = t.substr(0, 3), t === '===' || t === '!==' || t === '>>>' || t === '<<=' || t === '>>=' || t === '**=' || t === '&&=' || t === '||=' ? this.index += 3 : (t = t.substr(0, 2), t === '&&' || t === '||' || t === '==' || t === '!=' || t === '+=' || t === '-=' || t === '*=' || t === '/=' || t === '++' || t === '--' || t === '<<' || t === '>>' || t === '&=' || t === '|=' || t === '^=' || t === '%=' || t === '<=' || t === '>=' || t === '=>' || t === '**' ? this.index += 2 : (t = this.source[this.index], '<>=!+-*%&|^/'.indexOf(t) >= 0 && ++this.index)));
}
return this.index === e && this.throwUnexpectedToken(), {
type: 7,
value: t,
lineNumber: this.lineNumber,
lineStart: this.lineStart,
start: e,
end: this.index
};
}
scanHexLiteral(e) {
const t = this.scanLiteralPart(Character.isHexDigitChar);
return t.length === 0 && this.throwUnexpectedToken(), this.source[this.index] === 'n' ? (this.index++, {
type: 6,
value: BigInt(`0x${t}`),
lineNumber: this.lineNumber,
lineStart: this.lineStart,
start: e,
end: this.index
}) : (Character.isIdentifierStart(this.source.charCodeAt(this.index)) && this.throwUnexpectedToken(), {
type: 6,
value: parseInt(`0x${t}`, 16),
lineNumber: this.lineNumber,
lineStart: this.lineStart,
start: e,
end: this.index
});
}
scanBinaryLiteral(e) {
let t; const
s = this.scanLiteralPart((e => e === '0' || e === '1'));
return s.length === 0 && this.throwUnexpectedToken(), this.source[this.index] === 'n' ? (this.index++, {
type: 6,
value: BigInt(`0b${s}`),
lineNumber: this.lineNumber,
lineStart: this.lineStart,
start: e,
end: this.index
}) : (this.eof() || (t = this.source.charCodeAt(this.index), (Character.isIdentifierStart(t) || Character.isDecimalDigit(t)) && this.throwUnexpectedToken()), {
type: 6,
value: parseInt(s, 2),
lineNumber: this.lineNumber,
lineStart: this.lineStart,
start: e,
end: this.index
});
}
scanOctalLiteral(e, t) {
let s = '';
let i = !1;
return Character.isOctalDigit(e.charCodeAt(0)) ? (i = !0, s = `0${this.source[this.index++]}`) : ++this.index, s += this.scanLiteralPart(Character.isOctalDigitChar), i || s.length !== 0 || this.throwUnexpectedToken(), this.source[this.index] === 'n' ? (this.index++, {
type: 6,
value: BigInt(`0o${s}`),
lineNumber: this.lineNumber,
lineStart: this.lineStart,
start: t,
end: this.index
}) : ((Character.isIdentifierStart(this.source.charCodeAt(this.index)) || Character.isDecimalDigit(this.source.charCodeAt(this.index))) && this.throwUnexpectedToken(), {
type: 6,
value: parseInt(s, 8),
octal: i,
lineNumber: this.lineNumber,
lineStart: this.lineStart,
start: t,
end: this.index
});
}
isImplicitOctalLiteral() {
for (let e = this.index + 1; e < this.length; ++e) {
const t = this.source[e];
if (t === '8' || t === '9' || t === 'n') return !1;
if (!Character.isOctalDigit(t.charCodeAt(0))) return !0;
}
return !0;
}
scanLiteralPart(e) {
let t = '';
for (this.source[this.index] === '_' && this.throwUnexpectedToken(Messages.NumericSeperatorNotAllowedHere); this.source[this.index] && (e(this.source[this.index]) || this.source[this.index] === '_');) this.source[this.index] !== '_' && (t += this.source[this.index]), this.index++, this.source[this.index - 1] === '_' && this.source[this.index] === '_' && this.throwUnexpectedToken(Messages.NumericSeperatorOneUnderscore);
return this.source[this.index - 1] === '_' && this.throwUnexpectedToken(Messages.NumericSeperatorNotAllowedHere), t;
}
scanNumericLiteral() {
const e = this.index;
let t = this.source[e];
assert(Character.isDecimalDigit(t.charCodeAt(0)) || t === '.', 'Numeric literal must start with a decimal digit or a decimal point');
let s = '';
if (t !== '.') {
if (s = this.source[this.index++], t = this.source[this.index], s === '0') {
if (t === 'x' || t === 'X') return ++this.index, this.scanHexLiteral(e);
if (t === 'b' || t === 'B') return ++this.index, this.scanBinaryLiteral(e);
if (t === 'o' || t === 'O') return this.scanOctalLiteral(t, e);
if (t && Character.isOctalDigit(t.charCodeAt(0)) && this.isImplicitOctalLiteral()) return this.scanOctalLiteral(t, e);
}
this.index--, s = this.scanLiteralPart(Character.isDecimalDigitChar), t = this.source[this.index];
}
if (t === '.' && (s += this.source[this.index++], s += this.scanLiteralPart(Character.isDecimalDigitChar), t = this.source[this.index]), t === 'e' || t === 'E') s += this.source[this.index++], t = this.source[this.index], t !== '+' && t !== '-' || (s += this.source[this.index++]), Character.isDecimalDigit(this.source.charCodeAt(this.index)) ? s += this.scanLiteralPart(Character.isDecimalDigitChar) : this.throwUnexpectedToken();
else if (t === 'n') {
return s.length > 1 && s[0] === '0' && this.throwUnexpectedToken(), this.index++, {
type: 6,
value: BigInt(s),
lineNumber: this.lineNumber,
lineStart: this.lineStart,
start: e,
end: this.index
};
}
return Character.isIdentifierStart(this.source.charCodeAt(this.index)) && this.throwUnexpectedToken(), {
type: 6,
value: parseFloat(s),
lineNumber: this.lineNumber,
lineStart: this.lineStart,
start: e,
end: this.index
};
}
scanStringLiteral() {
const e = this.index;
let t = this.source[e];
assert(t === "'" || t === '"', 'String literal must starts with a quote'), ++this.index;
let s = !1;
let i = '';
for (; !this.eof();) {
let e = this.source[this.index++];
if (e === t) {
t = '';
break;
}
if (e === '\\') {
if (e = this.source[this.index++], e && Character.isLineTerminator(e.charCodeAt(0))) ++this.lineNumber, e === '\r' && this.source[this.index] === '\n' && ++this.index, this.lineStart = this.index;
else {
switch (e) {
case 'u':
if (this.source[this.index] === '{') ++this.index, i += this.scanUnicodeCodePointEscape();
else {
const t = this.scanHexEscape(e);
t === null && this.throwUnexpectedToken(), i += t;
}
break;
case 'x':
const t = this.scanHexEscape(e);
t === null && this.throwUnexpectedToken(Messages.InvalidHexEscapeSequence), i += t;
break;
case 'n':
i += '\n';
break;
case 'r':
i += '\r';
break;
case 't':
i += '\t';
break;
case 'b':
i += '\b';
break;
case 'f':
i += '\f';
break;
case 'v':
i += '\v';
break;
case '8':
case '9':
i += e, this.tolerateUnexpectedToken();
break;
default:
if (e && Character.isOctalDigit(e.charCodeAt(0))) {
const t = this.octalToDecimal(e);
s = t.octal || s, i += String.fromCharCode(t.code);
} else i += e;
}
}
} else {
if (Character.isLineTerminator(e.charCodeAt(0))) break;
i += e;
}
}
return t !== '' && (this.index = e, this.throwUnexpectedToken()), {
type: 8,
value: i,
octal: s,
lineNumber: this.lineNumber,
lineStart: this.lineStart,
start: e,
end: this.index
};
}
scanTemplate() {
let e = '';
let t = !1;
const s = this.index;
const i = this.source[s] === '`';
let r = !1;
let n = null;
let a = 2;
for (++this.index; !this.eof();) {
let s = this.source[this.index++];
if (s === '`') {
a = 1, r = !0, t = !0;
break;
}
if (s === '$') {
if (this.source[this.index] === '{') {
this.curlyStack.push('${'), ++this.index, t = !0;
break;
}
e += s;
} else {
if (n !== null) continue;
if (s === '\\') {
if (s = this.source[this.index++], Character.isLineTerminator(s.charCodeAt(0))) ++this.lineNumber, s === '\r' && this.source[this.index] === '\n' && ++this.index, this.lineStart = this.index;
else {
switch (s) {
case 'n':
e += '\n';
break;
case 'r':
e += '\r';
break;
case 't':
e += '\t';
break;
case 'u':
if (this.source[this.index] === '{') {
++this.index;
const t = this.tryToScanUnicodeCodePointEscape();
t === null ? n = 'u' : e += t;
} else {
const t = this.scanHexEscape(s);
t === null ? n = 'u' : e += t;
}
break;
case 'x':
const t = this.scanHexEscape(s);
t === null ? n = 'x' : e += t;
break;
case 'b':
e += '\b';
break;
case 'f':
e += '\f';
break;
case 'v':
e += '\v';
break;
default:
s === '0' ? Character.isDecimalDigit(this.source.charCodeAt(this.index)) ? n = '0' : e += '\0' : Character.isDecimalDigitChar(s) ? n = s : e += s;
}
}
} else Character.isLineTerminator(s.charCodeAt(0)) ? (++this.lineNumber, s === '\r' && this.source[this.index] === '\n' && ++this.index, this.lineStart = this.index, e += '\n') : e += s;
}
}
return t || this.throwUnexpectedToken(), i || this.curlyStack.pop(), {
type: 10,
value: this.source.slice(s + 1, this.index - a),
cooked: n === null ? e : null,
head: i,
tail: r,
notEscapeSequenceHead: n,
lineNumber: this.lineNumber,
lineStart: this.lineStart,
start: s,
end: this.index
};
}
testRegExp(e, t) {
let s = e;
t.indexOf('u') >= 0 && (s = s.replace(/\\u\{([0-9a-fA-F]+)\}|\\u([a-fA-F0-9]{4})/g, ((e, t, s) => {
const i = parseInt(t || s, 16);
return i > 1114111 && this.throwUnexpectedToken(Messages.InvalidRegExp), i <= 65535 ? String.fromCharCode(i) : '';
})).replace(/[\uD800-\uDBFF][\uDC00-\uDFFF]/g, ''));
try {
RegExp(s);
} catch (e) {
this.throwUnexpectedToken(Messages.InvalidRegExp);
}
try {
return new RegExp(e, t);
} catch (e) {
return null;
}
}
scanRegExpBody() {
let e = this.source[this.index];
assert(e === '/', 'Regular expression literal must start with a slash');
let t = this.source[this.index++];
let s = !1;
let i = !1;
for (; !this.eof();) {
if (e = this.source[this.index++], t += e, e === '\\') e = this.source[this.index++], Character.isLineTerminator(e.charCodeAt(0)) && this.throwUnexpectedToken(Messages.UnterminatedRegExp), t += e;
else if (Character.isLineTerminator(e.charCodeAt(0))) this.throwUnexpectedToken(Messages.UnterminatedRegExp);
else if (s) e === ']' && (s = !1);
else {
if (e === '/') {
i = !0;
break;
}
e === '[' && (s = !0);
}
}
return i || this.throwUnexpectedToken(Messages.UnterminatedRegExp), t.substr(1, t.length - 2);
}
scanRegExpFlags() {
let e = '';
let t = '';
for (; !this.eof();) {
let s = this.source[this.index];
if (!Character.isIdentifierPart(s.charCodeAt(0))) break;
if (++this.index, s !== '\\' || this.eof()) t += s, e += s;
else if (s = this.source[this.index], s === 'u') {
++this.index;
let s = this.index;
const i = this.scanHexEscape('u');
if (i !== null) for (t += i, e += '\\u'; s < this.index; ++s) e += this.source[s];
else this.index = s, t += 'u', e += '\\u';
this.tolerateUnexpectedToken();
} else e += '\\', this.tolerateUnexpectedToken();
}
return t;
}
scanRegExp() {
const e = this.index;
const t = this.scanRegExpBody();
const s = this.scanRegExpFlags();
return {
type: 9,
value: '',
pattern: t,
flags: s,
regex: this.testRegExp(t, s),
lineNumber: this.lineNumber,
lineStart: this.lineStart,
start: e,
end: this.index
};
}
lex() {
if (this.eof()) {
return {
type: 2,
value: '',
lineNumber: this.lineNumber,
lineStart: this.lineStart,
start: this.index,
end: this.index
};
}
const e = this.source.charCodeAt(this.index);
return Character.isIdentifierStart(e) ? this.scanIdentifier() : e === 40 || e === 41 || e === 59 ? this.scanPunctuator() : e === 39 || e === 34 ? this.scanStringLiteral() : e === 46 ? Character.isDecimalDigit(this.source.charCodeAt(this.index + 1)) ? this.scanNumericLiteral() : this.scanPunctuator() : Character.isDecimalDigit(e) ? this.scanNumericLiteral() : e === 96 || e === 125 && this.curlyStack[this.curlyStack.length - 1] === '${' ? this.scanTemplate() : e >= 55296 && e < 57343 && Character.isIdentifierStart(this.codePointAt(this.index)) ? this.scanIdentifier() : this.scanPunctuator();
}
};
const ArrowParameterPlaceHolder = 'ArrowParameterPlaceHolder';
const Parser = class {
config;
delegate;
errorHandler;
scanner;
operatorPrecedence;
lookahead;
hasLineTerminator;
context;
tokens;
startMarker;
lastMarker;
constructor(e, t = {}, s) {
this.config = {
range: typeof t.range === 'boolean' && t.range,
loc: typeof t.loc === 'boolean' && t.loc,
source: null,
tokens: typeof t.tokens === 'boolean' && t.tokens,
comment: typeof t.comment === 'boolean' && t.comment,
tolerant: typeof t.tolerant === 'boolean' && t.tolerant
}, this.config.loc && t.source && t.source !== null && (this.config.source = String(t.source)), this.delegate = s, this.errorHandler = new ErrorHandler(), this.errorHandler.tolerant = this.config.tolerant == 1, this.scanner = new Scanner(e, this.errorHandler), this.scanner.trackComment = this.config.comment == 1, this.operatorPrecedence = {
')': 0,
';': 0,
',': 0,
'=': 0,
']': 0,
'??': 5,
'||': 6,
'&&': 7,
'|': 8,
'^': 9,
'&': 10,
'==': 11,
'!=': 11,
'===': 11,
'!==': 11,
'<': 12,
'>': 12,
'<=': 12,
'>=': 12,
'<<': 13,
'>>': 13,
'>>>': 13,
'+': 14,
'-': 14,
'*': 15,
'/': 15,
'%': 15
}, this.lookahead = {
type: 2,
value: '',
lineNumber: this.scanner.lineNumber,
lineStart: 0,
start: 0,
end: 0
}, this.hasLineTerminator = !1, this.context = {
isModule: !1,
isAsync: !1,
allowIn: !0,
allowStrictDirective: !0,
allowSuper: !1,
allowYield: !0,
firstCoverInitializedNameError: null,
isAssignmentTarget: !1,
isBindingElement: !1,
inConstructor: !1,
inFunctionBody: !1,
inIteration: !1,
inSwitch: !1,
inClassConstructor: !1,
labelSet: {},
strict: !1,
decorators: null
}, this.tokens = [], this.startMarker = {
index: 0,
line: this.scanner.lineNumber,
column: 0
}, this.lastMarker = {
index: 0,
line: this.scanner.lineNumber,
column: 0
}, this.nextToken(), this.lastMarker = {
index: this.scanner.index,
line: this.scanner.lineNumber,
column: this.scanner.index - this.scanner.lineStart
};
}
throwError(e, ...t) {
const s = t.slice();
const i = e.replace(/%(\d)/g, ((e, t) => (assert(t < s.length, 'Message reference must be in range'), s[t])));
const r = this.lastMarker.index;
const n = this.lastMarker.line;
const a = this.lastMarker.column + 1;
throw this.errorHandler.createError(r, n, a, i);
}
tolerateError(e, ...t) {
const s = t.slice();
const i = e.replace(/%(\d)/g, ((e, t) => (assert(t < s.length, 'Message reference must be in range'), s[t])));
const r = this.lastMarker.index;
const n = this.scanner.lineNumber;
const a = this.lastMarker.column + 1;
this.errorHandler.tolerateError(r, n, a, i);
}
unexpectedTokenError(e, t) {
let s; let
i = t || Messages.UnexpectedToken;
if (e ? (t || (i = e.type === 2 ? Messages.UnexpectedEOS : e.type === 3 ? Messages.UnexpectedIdentifier : e.type === 6 ? Messages.UnexpectedNumber : e.type === 8 ? Messages.UnexpectedString : e.type === 10 ? Messages.UnexpectedTemplate : Messages.UnexpectedToken, e.type === 4 && (this.scanner.isFutureReservedWord(e.value) ? i = Messages.UnexpectedReserved : this.context.strict && this.scanner.isStrictModeReservedWord(e.value) && (i = Messages.StrictReservedWord))), s = e.value) : s = 'ILLEGAL', i = i.replace('%0', s), e && typeof e.lineNumber === 'number') {
const t = e.start;
const s = e.lineNumber;
const r = this.lastMarker.index - this.lastMarker.column;
const n = e.start - r + 1;
return this.errorHandler.createError(t, s, n, i);
} {
const e = this.lastMarker.index;
const t = this.lastMarker.line;
const s = this.lastMarker.column + 1;
return this.errorHandler.createError(e, t, s, i);
}
}
throwUnexpectedToken(e, t) {
throw this.unexpectedTokenError(e, t);
}
tolerateUnexpectedToken(e, t) {
this.errorHandler.tolerate(this.unexpectedTokenError(e, t));
}
tolerateInvalidLoopStatement() {
(this.matchKeyword('class') || this.matchKeyword('function')) && this.tolerateError(Messages.UnexpectedToken, this.lookahead);
}
collectComments() {
if (this.config.comment) {
const e = this.scanner.scanComments();
if (e.length > 0 && this.delegate) {
for (let t = 0; t < e.length; ++t) {
const s = e[t];
const i = {
type: s.multiLine ? 'BlockComment' : 'LineComment',
value: this.scanner.source.slice(s.slice[0], s.slice[1])
};
this.config.range && (i.range = s.range), this.config.loc && (i.loc = s.loc);
const r = {
start: {
line: s.loc.start.line,
column: s.loc.start.column,
offset: s.range[0]
},
end: {
line: s.loc.end.line,
column: s.loc.end.column,
offset: s.range[1]
}
};
this.delegate(i, r);
}
}
} else this.scanner.scanComments();
}
getTokenRaw(e) {
return this.scanner.source.slice(e.start, e.end);
}
convertToken(e) {
const t = {
type: TokenName[e.type],
value: this.getTokenRaw(e)
};
if (this.config.range && (t.range = [e.start, e.end]), this.config.loc && (t.loc = {
start: {
line: this.startMarker.line,
column: this.startMarker.column
},
end: {
line: this.scanner.lineNumber,
column: this.scanner.index - this.scanner.lineStart
}
}), e.type === 9) {
const s = e.pattern;
const i = e.flags;
t.regex = {
pattern: s,
flags: i
};
}
return t;
}
nextToken() {
const e = this.lookahead;
this.lastMarker.index = this.scanner.index, this.lastMarker.line = this.scanner.lineNumber, this.lastMarker.column = this.scanner.index - this.scanner.lineStart, this.collectComments(), this.scanner.index !== this.startMarker.index && (this.startMarker.index = this.scanner.index, this.startMarker.line = this.scanner.lineNumber, this.startMarker.column = this.scanner.index - this.scanner.lineStart);
const t = this.scanner.lex();
return this.hasLineTerminator = e.lineNumber !== t.lineNumber, t && this.context.strict && t.type === 3 && this.scanner.isStrictModeReservedWord(t.value) && (t.type = 4), this.lookahead = t, this.config.tokens && t.type !== 2 && this.tokens.push(this.convertToken(t)), e;
}
nextRegexToken() {
this.collectComments();
const e = this.scanner.scanRegExp();
return this.config.tokens && (this.tokens.pop(), this.tokens.push(this.convertToken(e))), this.lookahead = e, this.nextToken(), e;
}
createNode() {
return {
index: this.startMarker.index,
line: this.startMarker.line,
column: this.startMarker.column
};
}
startNode(e, t = 0) {
let s = e.start - e.lineStart;
let i = e.lineNumber;
return s < 0 && (s += t, i--), {
index: e.start,
line: i,
column: s
};
}
finalize(e, t) {
if (this.config.range && (t.range = [e.index, this.lastMarker.index]), this.config.loc && (t.loc = {
start: {
line: e.line,
column: e.column
},
end: {
line: this.lastMarker.line,
column: this.lastMarker.column
}
}, this.config.source && (t.loc.source = this.config.source)), this.delegate) {
const s = {
start: {
line: e.line,
column: e.column,
offset: e.index
},
end: {
line: this.lastMarker.line,
column: this.lastMarker.column,
offset: this.lastMarker.index
}
};
this.delegate(t, s);
}
return t;
}
expect(e) {
const t = this.nextToken();
t.type === 7 && t.value === e || this.throwUnexpectedToken(t);
}
expectCommaSeparator() {
if (this.config.tolerant) {
const e = this.lookahead;
e.type === 7 && e.value === ',' ? this.nextToken() : e.type === 7 && e.value === ';' ? (this.nextToken(), this.tolerateUnexpectedToken(e)) : this.tolerateUnexpectedToken(e, Messages.UnexpectedToken);
} else this.expect(',');
}
expectKeyword(e) {
const t = this.nextToken();
t.type === 4 && t.value === e || this.throwUnexpectedToken(t);
}
match(e) {
return this.lookahead.type === 7 && this.lookahead.value === e;
}
matchKeyword(e) {
return this.lookahead.type === 4 && this.lookahead.value === e;
}
matchContextualKeyword(e) {
return this.lookahead.type === 3 && this.lookahead.value === e;
}
matchAssign() {
if (this.lookahead.type !== 7) return !1;
const e = this.lookahead.value;
return e === '=' || e === '*=' || e === '**=' || e === '/=' || e === '%=' || e === '+=' || e === '-=' || e === '<<=' || e === '>>=' || e === '>>>=' || e === '&=' || e === '^=' || e === '|=' || e === '&&=' || e === '||=' || e === '??=';
}
isolateCoverGrammar(e) {
const t = this.context.isBindingElement;
const s = this.context.isAssignmentTarget;
const i = this.context.firstCoverInitializedNameError;
this.context.isBindingElement = !0, this.context.isAssignmentTarget = !0, this.context.firstCoverInitializedNameError = null;
const r = e.call(this);
return this.context.firstCoverInitializedNameError !== null && this.throwUnexpectedToken(this.context.firstCoverInitializedNameError), this.context.isBindingElement = t, this.context.isAssignmentTarget = s, this.context.firstCoverInitializedNameError = i, r;
}
inheritCoverGrammar(e) {
const t = this.context.isBindingElement;
const s = this.context.isAssignmentTarget;
const i = this.context.firstCoverInitializedNameError;
this.context.isBindingElement = !0, this.context.isAssignmentTarget = !0, this.context.firstCoverInitializedNameError = null;
const r = e.call(this);
return this.context.isBindingElement = this.context.isBindingElement && t, this.context.isAssignmentTarget = this.context.isAssignmentTarget && s, this.context.firstCoverInitializedNameError = i || this.context.firstCoverInitializedNameError, r;
}
consumeSemicolon() {
this.match(';') ? this.nextToken() : this.hasLineTerminator || (this.lookahead.type === 2 || this.match('}') || this.throwUnexpectedToken(this.lookahead), this.lastMarker.index = this.startMarker.index, this.lastMarker.line = this.startMarker.line, this.lastMarker.column = this.startMarker.column);
}
parsePrimaryExpression() {
const e = this.createNode();
let t; let s; let
i;
switch (this.lookahead.type) {
case 3:
(this.context.isModule || this.context.isAsync) && this.lookahead.value === 'await' && this.tolerateUnexpectedToken(this.lookahead), t = this.matchAsyncFunction() ? this.parseFunctionExpression() : this.finalize(e, new Identifier(this.nextToken().value));
break;
case 6:
case 8:
this.context.strict && this.lookahead.octal && this.tolerateUnexpectedToken(this.lookahead, Messages.StrictOctalLiteral), this.context.isAssignmentTarget = !1, this.context.isBindingElement = !1, s = this.nextToken(), i = this.getTokenRaw(s), t = typeof s.value === 'bigint' ? this.finalize(e, new BigIntLiteral(s.value, i, s.value.toString())) : this.finalize(e, new Literal(s.value, i));
break;
case 1:
this.context.isAssignmentTarget = !1, this.context.isBindingElement = !1, s = this.nextToken(), i = this.getTokenRaw(s), t = this.finalize(e, new Literal(s.value === 'true', i));
break;
case 5:
this.context.isAssignmentTarget = !1, this.context.isBindingElement = !1, s = this.nextToken(), i = this.getTokenRaw(s), t = this.finalize(e, new Literal(null, i));
break;
case 10:
t = this.parseTemplateLiteral({
isTagged: !1
});
break;
case 7:
switch (this.lookahead.value) {
case '(':
this.context.isBindingElement = !1, t = this.inheritCoverGrammar(this.parseGroupExpression);
break;
case '[':
t = this.inheritCoverGrammar(this.parseArrayInitializer);
break;
case '{':
t = this.inheritCoverGrammar(this.parseObjectInitializer);
break;
case '/':
case '/=':
this.context.isAssignmentTarget = !1, this.context.isBindingElement = !1, this.scanner.index = this.startMarker.index, s = this.nextRegexToken(), i = this.getTokenRaw(s), t = this.finalize(e, new RegexLiteral(s.regex, i, s.pattern, s.flags));
break;
case '#':
this.nextToken(), t = this.finalize(e, new PrivateIdentifier(this.nextToken().value));
break;
case '@':
const r = this.parseDecorators();
this.context.decorators = r;
this.parsePrimaryExpression();
this.context.decorators = null, t = this.finalize(e, new PrivateIdentifier(this.nextToken().value));
break;
default:
t = this.throwUnexpectedToken(this.nextToken());
}
break;
case 4:
!this.context.strict && this.context.allowYield && this.matchKeyword('yield') ? t = this.parseIdentifierName() : !this.context.strict && this.matchKeyword('let') ? t = this.finalize(e, new Identifier(this.nextToken().value)) : (this.context.isAssignmentTarget = !1, this.context.isBindingElement = !1, this.matchKeyword('function') ? t = this.parseFunctionExpression() : this.matchKeyword('this') ? (this.nextToken(), t = this.finalize(e, new ThisExpression())) : this.matchKeyword('class') ? t = this.parseClassExpression() : this.matchKeyword('new') ? t = this.parseNewExpression() : this.matchImportCall() ? t = this.parseImportCall() : this.matchImportMeta() ? (this.context.isModule || this.tolerateUnexpectedToken(this.lookahead, Messages.CannotUseImportMetaOutsideAModule), t = this.parseImportMeta()) : t = this.throwUnexpectedToken(this.nextToken()));
break;
default:
t = this.throwUnexpectedToken(this.nextToken());
}
return t;
}
parseSpreadElement() {
const e = this.createNode();
this.expect('...');
const t = this.inheritCoverGrammar(this.parseAssignmentExpression);
return this.finalize(e, new SpreadElement(t));
}
parseArrayInitializer() {
const e = this.createNode();
const t = [];
for (this.expect('['); !this.match(']');) {
if (this.match(',')) this.nextToken(), t.push(null);
else if (this.match('...')) {
const e = this.parseSpreadElement();
this.match(']') || (this.context.isAssignmentTarget = !1, this.context.isBindingElement = !1, this.expect(',')), t.push(e);
} else t.push(this.inheritCoverGrammar(this.parseAssignmentExpression)), this.match(']') || this.expect(',');
}
return this.expect(']'), this.finalize(e, new ArrayExpression(t));
}
parsePropertyMethod(e) {
this.context.isAssignmentTarget = !1, this.context.isBindingElement = !1;
const t = this.context.strict;
const s = this.context.allowStrictDirective;
this.context.allowStrictDirective = e.simple;
const i = this.isolateCoverGrammar(this.parseFunctionSourceElements);
return this.context.strict && e.firstRestricted && this.tolerateUnexpectedToken(e.firstRestricted, e.message), this.context.strict && e.stricted && this.tolerateUnexpectedToken(e.stricted, e.message), this.context.strict = t, this.context.allowStrictDirective = s, i;
}
parsePropertyMethodFunction(e) {
const t = this.createNode();
const s = this.context.allowYield;
this.context.allowYield = !0;
const i = this.parseFormalParameters();
const r = this.parsePropertyMethod(i);
return this.context.allowYield = s, this.finalize(t, new FunctionExpression(null, i.params, r, e, !1));
}
parsePropertyMethodAsyncFunction(e) {
const t = this.createNode();
const s = this.context.allowYield;
const i = this.context.isAsync;
this.context.allowYield = !1, this.context.isAsync = !0;
const r = this.parseFormalParameters();
const n = this.parsePropertyMethod(r);
return this.context.allowYield = s, this.context.isAsync = i, this.finalize(t, new FunctionExpression(null, r.params, n, e, !0));
}
parseObjectPropertyKey(e = !1) {
const t = this.createNode();
const s = this.nextToken();
let i;
switch (s.type) {
case 8:
case 6:
this.context.strict && s.octal && this.tolerateUnexpectedToken(s, Messages.StrictOctalLiteral);
const r = this.getTokenRaw(s);
i = typeof s.value === 'bigint' ? this.finalize(t, new BigIntLiteral(s.value, r, s.value.toString())) : this.finalize(t, new Literal(s.value, r));
break;
case 3:
case 1:
case 5:
case 4:
i = this.finalize(t, e ? new PrivateIdentifier(s.value) : new Identifier(s.value));
break;
case 7:
s.value === '[' ? (i = this.isolateCoverGrammar(this.parseAssignmentExpression), this.expect(']')) : i = this.throwUnexpectedToken(s);
break;
default:
i = this.throwUnexpectedToken(s);
}
return i;
}
isPropertyKey(e, t) {
return e.type === 'Identifier' && e.name === t || e.type === 'Literal' && e.value === t;
}
parseObjectProperty(e) {
const t = this.createNode();
const s = this.lookahead;
let i; let r = null;
let n = null;
let a = !1;
let o = !1;
let u = !1;
let h = !1;
let c = !1;
if (s.type === 3) {
const e = s.value;
this.nextToken(), a = this.match('['), h = !(this.hasLineTerminator || e !== 'async' || this.match(':') || this.match('(') || this.match(',')), c = this.match('*'), c && this.nextToken(), r = h ? this.parseObjectPropertyKey() : this.finalize(t, new Identifier(e));
} else this.match('*') ? this.nextToken() : (a = this.match('['), r = this.parseObjectPropertyKey());
const l = this.qualifiedPropertyName(this.lookahead);
if (s.type === 3 && !h && s.value === 'get' && l) i = 'get', a = this.match('['), r = this.parseObjectPropertyKey(), this.context.allowYield = !1, n = this.parseGetterMethod();
else if (s.type === 3 && !h && s.value === 'set' && l) i = 'set', a = this.match('['), r = this.parseObjectPropertyKey(), n = this.parseSetterMethod();
else if (s.type === 7 && s.value === '*' && l) i = 'init', a = this.match('['), r = this.parseObjectPropertyKey(), n = this.parseGeneratorMethod(!1), o = !0;
else if (r || this.throwUnexpectedToken(this.lookahead), i = 'init', this.match(':') && !h) !a && this.isPropertyKey(r, '__proto__') && (e.value && this.tolerateError(Messages.DuplicateProtoProperty), e.value = !0), this.nextToken(), n = this.inheritCoverGrammar(this.parseAssignmentExpression);
else if (this.match('(')) n = h ? this.parsePropertyMethodAsyncFunction(c) : this.parsePropertyMethodFunction(c), o = !0;
else if (s.type === 3) {
const e = this.finalize(t, new Identifier(s.value));
if (this.match('=')) {
this.context.firstCoverInitializedNameError = this.lookahead, this.nextToken(), u = !0;
const s = this.isolateCoverGrammar(this.parseAssignmentExpression);
n = this.finalize(t, new AssignmentPattern(e, s));
} else u = !0, n = e;
} else this.throwUnexpectedToken(this.nextToken());
return this.finalize(t, new Property(i, r, a, n, o, u));
}
parseObjectInitializer() {
const e = this.createNode();
this.expect('{');
const t = [];
const s = {
value: !1
};
for (; !this.match('}');) {
const e = this.match('...') ? this.parseSpreadElement() : this.parseObjectProperty(s);
t.push(e), this.match('}') || e.method && !this.match(',') || this.expectCommaSeparator();
}
return this.expect('}'), this.finalize(e, new ObjectExpression(t));
}
throwTemplateLiteralEarlyErrors(e) {
switch (e.notEscapeSequenceHead) {
case 'u':
return this.throwUnexpectedToken(e, Messages.InvalidUnicodeEscapeSequence);
case 'x':
return this.throwUnexpectedToken(e, Messages.InvalidHexEscapeSequence);
case '8':
case '9':
return this.throwUnexpectedToken(e, Messages.TemplateEscape89);
default:
return this.throwUnexpectedToken(e, Messages.TemplateOctalLiteral);
}
}
parseTemplateHead(e) {
assert(this.lookahead.head, 'Template literal must start with a template head');
const t = this.createNode();
const s = this.nextToken();
e.isTagged || s.notEscapeSequenceHead === null || this.throwTemplateLiteralEarlyErrors(s);
const i = s.value;
const r = s.cooked;
return this.finalize(t, new TemplateElement({
raw: i,
cooked: r
}, s.tail));
}
parseTemplateElement(e) {
this.lookahead.type !== 10 && this.throwUnexpectedToken();
const t = this.createNode();
const s = this.nextToken();
e.isTagged || s.notEscapeSequenceHead === null || this.throwTemplateLiteralEarlyErrors(s);
const i = s.value;
const r = s.cooked;
return this.finalize(t, new TemplateElement({
raw: i,
cooked: r
}, s.tail));
}
parseTemplateLiteral(e) {
const t = this.createNode();
const s = [];
const i = [];
let r = this.parseTemplateHead(e);
for (i.push(r); !r.tail;) s.push(this.parseExpression()), r = this.parseTemplateElement(e), i.push(r);
return this.finalize(t, new TemplateLiteral(i, s));
}
reinterpretExpressionAsPattern(e) {
switch (e.type) {
case 'Identifier':
case 'MemberExpression':
case 'RestElement':
case 'AssignmentPattern':
default:
break;
case 'SpreadElement':
e.type = 'RestElement', this.reinterpretExpressionAsPattern(e.argument);
break;
case 'ArrayExpression':
e.type = 'ArrayPattern';
for (let t = 0; t < e.elements.length; t++) e.elements[t] !== null && this.reinterpretExpressionAsPattern(e.elements[t]);
break;
case 'ObjectExpression':
e.type = 'ObjectPattern';
for (let t = 0; t < e.properties.length; t++) {
const s = e.properties[t];
this.reinterpretExpressionAsPattern(s.type === 'SpreadElement' ? s : s.value);
}
break;
case 'AssignmentExpression':
e.type = 'AssignmentPattern', delete e.operator, this.reinterpretExpressionAsPattern(e.left);
}
}
parseGroupExpression() {
let e;
if (this.expect('('), this.match(')')) {
this.nextToken(), this.match('=>') || this.expect('=>'), e = {
type: ArrowParameterPlaceHolder,
params: [],
async: !1
};
} else {
const t = this.lookahead;
const s = [];
if (this.match('...')) {
e = this.parseRestElement(s), this.expect(')'), this.match('=>') || this.expect('=>'), e = {
type: ArrowParameterPlaceHolder,
params: [e],
async: !1
};
} else {
let i = !1;
if (this.context.isBindingElement = !0, e = this.inheritCoverGrammar(this.parseAssignmentExpression), this.match(',')) {
const r = [];
for (this.context.isAssignmentTarget = !1, r.push(e); this.lookahead.type !== 2 && this.match(',');) {
if (this.nextToken(), this.match(')')) {
this.nextToken();
for (let e = 0; e < r.length; e++) this.reinterpretExpressionAsPattern(r[e]);
i = !0, e = {
type: ArrowParameterPlaceHolder,
params: r,
async: !1
};
} else if (this.match('...')) {
this.context.isBindingElement || this.throwUnexpectedToken(this.lookahead), r.push(this.parseRestElement(s)), this.expect(')'), this.match('=>') || this.expect('=>'), this.context.isBindingElement = !1;
for (let e = 0; e < r.length; e++) this.reinterpretExpressionAsPattern(r[e]);
i = !0, e = {
type: ArrowParameterPlaceHolder,
params: r,
async: !1
};
} else r.push(this.inheritCoverGrammar(this.parseAssignmentExpression));
if (i) break;
}
i || (e = this.finalize(this.startNode(t), new SequenceExpression(r)));
}
if (!i) {
if (this.expect(')'), this.match('=>') && (e.type === 'Identifier' && e.name === 'yield' && (i = !0, e = {
type: ArrowParameterPlaceHolder,
params: [e],
async: !1
}), !i)) {
if (this.context.isBindingElement || this.throwUnexpectedToken(this.lookahead), e.type === 'SequenceExpression') for (let t = 0; t < e.expressions.length; t++) this.reinterpretExpressionAsPattern(e.expressions[t]);
else this.reinterpretExpressionAsPattern(e);
const t = e.type === 'SequenceExpression' ? e.expressions : [e];
e = {
type: ArrowParameterPlaceHolder,
params: t,
async: !1
};
}
this.context.isBindingElement = !1;
}
}
}
return e;
}
parseArguments() {
this.expect('(');
const e = [];
if (!this.match(')')) {
for (;;) {
const t = this.match('...') ? this.parseSpreadElement() : this.isolateCoverGrammar(this.parseAssignmentExpression);
if (e.push(t), this.match(')')) break;
if (this.expectCommaSeparator(), this.match(')')) break;
}
}
return this.expect(')'), e;
}
isIdentifierName(e) {
return e.type === 3 || e.type === 4 || e.type === 1 || e.type === 5;
}
parseIdentifierName(e = !1) {
let t = !1;
const s = this.createNode();
let i = this.nextToken();
return i.value === '#' && e && (i = this.nextToken(), t = !0), this.isIdentifierName(i) || this.throwUnexpectedToken(i), this.finalize(s, t ? new PrivateIdentifier(i.value) : new Identifier(i.value));
}
parseNewExpression() {
const e = this.createNode();
const t = this.parseIdentifierName();
let s;
if (assert(t.name === 'new', 'New expression must start with `new`'), this.match('.')) {
if (this.nextToken(), this.lookahead.type === 3 && this.context.inFunctionBody && this.lookahead.value === 'target') {
const e = this.parseIdentifierName();
s = new MetaProperty(t, e);
} else this.throwUnexpectedToken(this.lookahead);
} else if (this.matchKeyword('import')) this.throwUnexpectedToken(this.lookahead);
else {
const e = this.isolateCoverGrammar(this.parseLeftHandSideExpression);
const t = this.match('(') ? this.parseArguments() : [];
s = new NewExpression(e, t), this.context.isAssignmentTarget = !1, this.context.isBindingElement = !1;
}
return this.finalize(e, s);
}
parseAsyncArgument() {
const e = this.parseAssignmentExpression();
return this.context.firstCoverInitializedNameError = null, e;
}
parseAsyncArguments() {
this.expect('(');
const e = [];
if (!this.match(')')) {
for (;;) {
const t = this.match('...') ? this.parseSpreadElement() : this.isolateCoverGrammar(this.parseAsyncArgument);
if (e.push(t), this.match(')')) break;
if (this.expectCommaSeparator(), this.match(')')) break;
}
}
return this.expect(')'), e;
}
matchImportCall() {
let e = this.matchKeyword('import');
if (e) {
const t = this.scanner.saveState();
this.scanner.scanComments();
const s = this.scanner.lex();
this.scanner.restoreState(t), e = s.type === 7 && s.value === '(';
}
return e;
}
parseImportCall() {
const e = this.createNode();
this.expectKeyword('import'), this.expect('(');
const t = this.context.isAssignmentTarget;
this.context.isAssignmentTarget = !0;
const s = this.parseAssignmentExpression();
let i = null;
return this.match(',') && (this.nextToken(), this.match(')') || (i = this.parseAssignmentExpression())), this.context.isAssignmentTarget = t, this.match(')') ? this.nextToken() : (this.match(',') && this.nextToken(), this.expect(')')), this.finalize(e, new ImportExpression(s, i));
}
matchImportMeta() {
let e = this.matchKeyword('import');
if (e) {
const t = this.scanner.saveState();
this.scanner.scanComments();
const s = this.scanner.lex();
if (s.type === 7 && s.value === '.') {
this.scanner.scanComments();
const t = this.scanner.lex();
e = t.type === 3 && t.value === 'meta', e && t.end - t.start != 4 && this.tolerateUnexpectedToken(t, Messages.InvalidEscapedReservedWord);
} else e = !1;
this.scanner.restoreState(t);
}
return e;
}
parseImportMeta() {
const e = this.createNode();
const t = this.parseIdentifierName();
this.expect('.');
const s = this.parseIdentifierName();
return this.context.isAssignmentTarget = !1, this.finalize(e, new MetaProperty(t, s));
}
parseLeftHandSideExpressionAllowCall() {
const e = this.lookahead;
const t = this.matchContextualKeyword('async');
const s = this.context.allowIn;
let i;
this.context.allowIn = !0;
const r = this.matchKeyword('super');
r && this.context.inFunctionBody ? (i = this.createNode(), this.nextToken(), i = this.finalize(i, new Super()), this.match('(') || this.match('.') || this.match('[') || this.throwUnexpectedToken(this.lookahead)) : i = this.inheritCoverGrammar(this.matchKeyword('new') ? this.parseNewExpression : this.parsePrimaryExpression), !r || !this.match('(') || this.context.inClassConstructor && this.context.allowSuper || this.tolerateError(Messages.UnexpectedSuper);
let n = !1;
for (;;) {
let s = !1;
if (this.match('?.') && (s = !0, n = !0, this.expect('?.')), this.match('(')) {
const r = t && e.lineNumber === this.lookahead.lineNumber;
this.context.isBindingElement = !1, this.context.isAssignmentTarget = !1;
const n = r ? this.parseAsyncArguments() : this.parseArguments();
if (i.type === 'ImportExpression' && n.length !== 1 && this.tolerateError(Messages.BadImportCallArity), i = this.finalize(this.startNode(e), new CallExpression(i, n, s)), r && this.match('=>')) {
for (let e = 0; e < n.length; ++e) this.reinterpretExpressionAsPattern(n[e]);
i = {
type: ArrowParameterPlaceHolder,
params: n,
async: !0
};
}
} else if (this.match('[')) {
this.context.isBindingElement = !1, this.context.isAssignmentTarget = !s, this.expect('[');
const t = this.isolateCoverGrammar(this.parseExpression);
this.expect(']'), i = this.finalize(this.startNode(e), new MemberExpression(!0, i, t, s));
} else if (this.lookahead.type === 10 && this.lookahead.head) {
s && this.throwUnexpectedToken(this.lookahead), n && this.throwError(Messages.InvalidTaggedTemplateOnOptionalChain);
const t = this.parseTemplateLiteral({
isTagged: !0
});
i = this.finalize(this.startNode(e), new TaggedTemplateExpression(i, t));
} else {
if (!this.match('.') && !s) break;
{
this.context.isBindingElement = !1, this.context.isAssignmentTarget = !s, s || this.expect('.');
const t = this.parseIdentifierName(!0);
i = this.finalize(this.startNode(e), new MemberExpression(!1, i, t, s));
}
}
}
return this.context.allowIn = s, n && (i = this.finalize(this.startNode(e), new ChainExpression(i))), i;
}
parseSuper() {
const e = this.createNode();
return this.expectKeyword('super'), this.match('[') || this.match('.') || this.throwUnexpectedToken(this.lookahead), this.finalize(e, new Super());
}
parseLeftHandSideExpression() {
assert(this.context.allowIn, 'callee of new expression always allow in keyword.');
const e = this.startNode(this.lookahead);
let t = this.matchKeyword('super') && this.context.inFunctionBody ? this.parseSuper() : this.inheritCoverGrammar(this.matchKeyword('new') ? this.parseNewExpression : this.parsePrimaryExpression);
let s = !1;
for (;;) {
let i = !1;
if (this.match('?.') && (i = !0, s = !0, this.expect('?.')), this.match('[')) {
this.context.isBindingElement = !1, this.context.isAssignmentTarget = !i, this.expect('[');
const s = this.isolateCoverGrammar(this.parseExpression);
this.expect(']'), t = this.finalize(e, new MemberExpression(!0, t, s, i));
} else if (this.lookahead.type === 10 && this.lookahead.head) {
i && this.throwUnexpectedToken(this.lookahead), s && this.throwError(Messages.InvalidTaggedTemplateOnOptionalChain);
const r = this.parseTemplateLiteral({
isTagged: !0
});
t = this.finalize(e, new TaggedTemplateExpression(t, r));
} else {
if (!this.match('.') && !i) break;
{
this.context.isBindingElement = !1, this.context.isAssignmentTarget = !i, i || this.expect('.');
const s = this.parseIdentifierName();
t = this.finalize(e, new MemberExpression(!1, t, s, i));
}
}
}
return s && (t = this.finalize(e, new ChainExpression(t))), t;
}
parseUpdateExpression() {
let e;
const t = this.lookahead;
if (this.match('++') || this.match('--')) {
const s = this.startNode(t);
const i = this.nextToken();
e = this.inheritCoverGrammar(this.parseUnaryExpression), this.context.strict && e.type === 'Identifier' && this.scanner.isRestrictedWord(e.name) && this.tolerateError(Messages.StrictLHSPrefix), this.context.isAssignmentTarget || this.tolerateError(Messages.InvalidLHSInAssignment);
const r = !0;
e = this.finalize(s, new UpdateExpression(i.value, e, r)), this.context.isAssignmentTarget = !1, this.context.isBindingElement = !1;
} else if (e = this.inheritCoverGrammar(this.parseLeftHandSideExpressionAllowCall), !this.hasLineTerminator && this.lookahead.type === 7 && (this.match('++') || this.match('--'))) {
this.context.strict && e.type === 'Identifier' && this.scanner.isRestrictedWord(e.name) && this.tolerateError(Messages.StrictLHSPostfix), this.context.isAssignmentTarget || this.tolerateError(Messages.InvalidLHSInAssignment), this.context.isAssignmentTarget = !1, this.context.isBindingElement = !1;
const s = this.nextToken().value;
const i = !1;
e = this.finalize(this.startNode(t), new UpdateExpression(s, e, i));
}
return e;
}
parseAwaitExpression() {
const e = this.createNode();
this.nextToken();
const t = this.parseUnaryExpression();
return this.finalize(e, new AwaitExpression(t));
}
parseUnaryExpression() {
let e;
if (this.match('+') || this.match('-') || this.match('~') || this.match('!') || this.matchKeyword('delete') || this.matchKeyword('void') || this.matchKeyword('typeof')) {
const t = this.startNode(this.lookahead);
const s = this.nextToken();
e = this.inheritCoverGrammar(this.parseUnaryExpression), e = this.finalize(t, new UnaryExpression(s.value, e)), this.context.strict && e.operator === 'delete' && e.argument.type === 'Identifier' && this.tolerateError(Messages.StrictDelete), this.context.isAssignmentTarget = !1, this.context.isBindingElement = !1;
} else e = (this.context.isModule && !this.context.inFunctionBody || this.context.isAsync) && this.matchContextualKeyword('await') ? this.parseAwaitExpression() : this.parseUpdateExpression();
return e;
}
parseExponentiationExpression() {
const e = this.lookahead;
const t = this.match('(');
let s = this.inheritCoverGrammar(this.parseUnaryExpression);
if ((s.type !== 'UnaryExpression' || t) && this.match('**')) {
this.nextToken(), this.context.isAssignmentTarget = !1, this.context.isBindingElement = !1;
const t = s;
const i = this.isolateCoverGrammar(this.parseExponentiationExpression);
s = this.finalize(this.startNode(e), new BinaryExpression('**', t, i));
}
return s;
}
binaryPrecedence(e) {
const t = e.value;
let s;
return s = e.type === 7 ? this.operatorPrecedence[t] || 0 : e.type === 4 && (t === 'instanceof' || this.context.allowIn && t === 'in') ? 12 : 0, s;
}
parseBinaryExpression() {
const e = this.lookahead;
let t = this.inheritCoverGrammar(this.parseExponentiationExpression);
let s = !0;
let i = !0;
const r = e => {
e.value !== '&&' && e.value !== '||' || (i = !1), e.value === '??' && (s = !1);
};
const n = this.lookahead;
let a = this.binaryPrecedence(n);
if (a > 0) {
r(n), this.nextToken(), this.context.isAssignmentTarget = !1, this.context.isBindingElement = !1;
const o = [e, this.lookahead];
let u = t;
let h = this.isolateCoverGrammar(this.parseExponentiationExpression);
const c = [u, n.value, h];
const l = [a];
for (; a = this.binaryPrecedence(this.lookahead), !(a <= 0);) {
for ((s || this.lookahead.value !== '&&' && this.lookahead.value !== '||') && (i || this.lookahead.value !== '??') || this.throwUnexpectedToken(this.lookahead), r(this.lookahead); c.length > 2 && a <= l[l.length - 1];) {
h = c.pop();
const e = c.pop();
l.pop(), u = c.pop(), o.pop();
const t = o[o.length - 1];
const s = this.startNode(t, t.lineStart);
const i = e === '||' || e === '&&' || e === '??';
c.push(this.finalize(s, i ? new LogicalExpression(e, u, h) : new BinaryExpression(e, u, h)));
}
c.push(this.nextToken().value), l.push(a), o.push(this.lookahead), c.push(this.isolateCoverGrammar(this.parseExponentiationExpression));
}
let p = c.length - 1;
t = c[p];
let m = o.pop();
for (; p > 1;) {
const e = o.pop();
const s = m && m.lineStart;
const i = this.startNode(e, s);
const r = c[p - 1];
const n = r === '||' || r === '&&' || r === '??';
t = this.finalize(i, n ? new LogicalExpression(r, c[p - 2], t) : new BinaryExpression(r, c[p - 2], t)), p -= 2, m = e;
}
}
return t;
}
parseConditionalExpression() {
const e = this.lookahead;
let t = this.inheritCoverGrammar(this.parseBinaryExpression);
if (this.match('?')) {
this.nextToken();
const s = this.context.allowIn;
this.context.allowIn = !0;
const i = this.isolateCoverGrammar(this.parseAssignmentExpression);
this.context.allowIn = s, this.expect(':');
const r = this.isolateCoverGrammar(this.parseAssignmentExpression);
t = this.finalize(this.startNode(e), new ConditionalExpression(t, i, r)), this.context.isAssignmentTarget = !1, this.context.isBindingElement = !1;
}
return t;
}
checkPatternParam(e, t) {
switch (t.type) {
case 'Identifier':
this.validateParam(e, t, t.name);
break;
case 'RestElement':
this.checkPatternParam(e, t.argument);
break;
case 'AssignmentPattern':
this.checkPatternParam(e, t.left);
break;
case 'ArrayPattern':
for (let s = 0; s < t.elements.length; s++) t.elements[s] !== null && this.checkPatternParam(e, t.elements[s]);
break;
case 'ObjectPattern':
for (let s = 0; s < t.properties.length; s++) {
const i = t.properties[s];
this.checkPatternParam(e, i.type === 'RestElement' ? i : i.value);
}
}
e.simple = e.simple && t instanceof Identifier;
}
reinterpretAsCoverFormalsList(e) {
let t = [e];
const s = {
simple: !0,
paramSet: {}
};
let i = !1;
switch (e.type) {
case 'Identifier':
break;
case ArrowParameterPlaceHolder:
t = e.params, i = e.async;
break;
default:
return null;
}
for (let e = 0; e < t.length; ++e) {
const r = t[e];
r.type === 'AssignmentPattern' ? r.right.type === 'YieldExpression' && (r.right.argument && this.throwUnexpectedToken(this.lookahead), r.right.type = 'Identifier', r.right.name = 'yield', delete r.right.argument, delete r.right.delegate) : i && r.type === 'Identifier' && r.name === 'await' && this.throwUnexpectedToken(this.lookahead), this.checkPatternParam(s, r), t[e] = r;
}
if (this.context.strict || !this.context.allowYield) {
for (let e = 0; e < t.length; ++e) {
t[e].type === 'YieldExpression' && this.throwUnexpectedToken(this.lookahead);
}
}
if (s.hasDuplicateParameterNames) {
const e = this.context.strict ? s.stricted : s.firstRestricted;
this.throwUnexpectedToken(e, Messages.DuplicateParameter);
}
return {
simple: s.simple,
params: t,
stricted: s.stricted,
firstRestricted: s.firstRestricted,
message: s.message
};
}
parseAssignmentExpression() {
let e;
if (!this.context.allowYield && this.matchKeyword('yield')) e = this.parseYieldExpression();
else {
const t = this.lookahead;
let s = t;
if (e = this.parseConditionalExpression(), s.type === 3 && s.lineNumber === this.lookahead.lineNumber && s.value === 'async' && (this.lookahead.type === 3 || this.matchKeyword('yield'))) {
const t = this.parsePrimaryExpression();
this.reinterpretExpressionAsPattern(t), e = {
type: ArrowParameterPlaceHolder,
params: [t],
async: !0
};
}
if (e.type === ArrowParameterPlaceHolder || this.match('=>')) {
this.context.isAssignmentTarget = !1, this.context.isBindingElement = !1;
const s = e.async;
const i = this.reinterpretAsCoverFormalsList(e);
if (i) {
this.hasLineTerminator && this.tolerateUnexpectedToken(this.lookahead), this.context.firstCoverInitializedNameError = null;
const r = this.context.strict;
const n = this.context.allowStrictDirective;
this.context.allowStrictDirective = i.simple;
const a = this.context.allowYield;
const o = this.context.isAsync;
this.context.allowYield = !0, this.context.isAsync = s;
const u = this.startNode(t);
let h;
if (this.expect('=>'), this.match('{')) {
const e = this.context.allowIn;
this.context.allowIn = !0, h = this.parseFunctionSourceElements(), this.context.allowIn = e;
} else h = this.isolateCoverGrammar(this.parseAssignmentExpression);
const c = h.type !== 'BlockStatement';
this.context.strict && i.firstRestricted && this.throwUnexpectedToken(i.firstRestricted, i.message), this.context.strict && i.stricted && this.tolerateUnexpectedToken(i.stricted, i.message), e = this.finalize(u, new ArrowFunctionExpression(i.params, h, c, s)), this.context.strict = r, this.context.allowStrictDirective = n, this.context.allowYield = a, this.context.isAsync = o;
}
} else if (this.matchAssign()) {
if (this.context.isAssignmentTarget || this.tolerateError(Messages.InvalidLHSInAssignment), this.context.strict && e.type === 'Identifier') {
const t = e;
this.scanner.isRestrictedWord(t.name) && this.tolerateUnexpectedToken(s, Messages.StrictLHSAssignment), this.scanner.isStrictModeReservedWord(t.name) && this.tolerateUnexpectedToken(s, Messages.StrictReservedWord);
}
this.match('=') ? this.reinterpretExpressionAsPattern(e) : (this.context.isAssignmentTarget = !1, this.context.isBindingElement = !1), s = this.nextToken();
const i = s.value;
const r = this.isolateCoverGrammar(this.parseAssignmentExpression);
e = this.finalize(this.startNode(t), new AssignmentExpression(i, e, r)), this.context.firstCoverInitializedNameError = null;
}
}
return e;
}
parseExpression() {
const e = this.lookahead;
let t = this.isolateCoverGrammar(this.parseAssignmentExpression);
if (this.match(',')) {
const s = [];
for (s.push(t); this.lookahead.type !== 2 && this.match(',');) this.nextToken(), s.push(this.isolateCoverGrammar(this.parseAssignmentExpression));
t = this.finalize(this.startNode(e), new SequenceExpression(s));
}
return t;
}
parseStatementListItem() {
let e;
if (this.context.isAssignmentTarget = !0, this.context.isBindingElement = !0, this.lookahead.type === 4) {
switch (this.lookahead.value) {
case 'export':
this.context.isModule || this.tolerateUnexpectedToken(this.lookahead, Messages.IllegalExportDeclaration), e = this.parseExportDeclaration();
break;
case 'import':
this.matchImportCall() ? e = this.parseExpressionStatement() : this.matchImportMeta() ? e = this.parseStatement() : (this.context.isModule || this.tolerateUnexpectedToken(this.lookahead, Messages.IllegalImportDeclaration), e = this.parseImportDeclaration());
break;
case 'const':
e = this.parseLexicalDeclaration({
inFor: !1
});
break;
case 'function':
e = this.parseFunctionDeclaration();
break;
case 'class':
e = this.parseClassDeclaration();
break;
case 'let':
e = this.isLexicalDeclaration() ? this.parseLexicalDeclaration({
inFor: !1
}) : this.parseStatement();
break;
default:
e = this.parseStatement();
}
} else e = this.parseStatement();
return e;
}
parseBlock() {
const e = this.createNode();
this.expect('{');
const t = [];
for (; !this.match('}');) t.push(this.parseStatementListItem());
return this.expect('}'), this.finalize(e, new BlockStatement(t));
}
parseLexicalBinding(e, t) {
const s = this.createNode();
const i = this.parsePattern([], e);
this.context.strict && i.type === 'Identifier' && this.scanner.isRestrictedWord(i.name) && this.tolerateError(Messages.StrictVarName);
let r = null;
return e === 'const' ? this.matchKeyword('in') || this.matchContextualKeyword('of') || (this.match('=') ? (this.nextToken(), r = this.isolateCoverGrammar(this.parseAssignmentExpression)) : this.throwError(Messages.DeclarationMissingInitializer, 'const')) : (!t.inFor && i.type !== 'Identifier' || this.match('=')) && (this.expect('='), r = this.isolateCoverGrammar(this.parseAssignmentExpression)), this.finalize(s, new VariableDeclarator(i, r));
}
parseBindingList(e, t) {
const s = [this.parseLexicalBinding(e, t)];
for (; this.match(',');) this.nextToken(), s.push(this.parseLexicalBinding(e, t));
return s;
}
isLexicalDeclaration() {
const e = this.scanner.saveState();
this.scanner.scanComments();
const t = this.scanner.lex();
return this.scanner.restoreState(e), t.type === 3 || t.type === 7 && t.value === '[' || t.type === 7 && t.value === '{' || t.type === 4 && t.value === 'let' || t.type === 4 && t.value === 'yield';
}
parseLexicalDeclaration(e) {
const t = this.createNode();
const s = this.nextToken().value;
assert(s === 'let' || s === 'const', 'Lexical declaration must be either let or const');
const i = this.parseBindingList(s, e);
return this.consumeSemicolon(), this.finalize(t, new VariableDeclaration(i, s));
}
isInitializedProperty() {
const e = this.scanner.saveState();
this.scanner.scanComments();
const t = this.scanner.lex();
return this.scanner.restoreState(e), this.lookahead.type === 3 && t.value === '=';
}
isDeclaredProperty() {
const e = this.scanner.saveState();
this.scanner.scanComments();
const t = this.scanner.lex();
return this.scanner.restoreState(e), this.lookahead.type === 3 && t.value === ';' || this.lookahead.type === 3 && t.lineNumber !== this.startMarker.line;
}
parseBindingRestElement(e, t) {
const s = this.createNode();
this.expect('...');
const i = this.parsePattern(e, t);
return this.finalize(s, new RestElement(i));
}
parseArrayPattern(e, t) {
const s = this.createNode();
this.expect('[');
const i = [];
for (; !this.match(']');) {
if (this.match(',')) this.nextToken(), i.push(null);
else {
if (this.match('...')) {
i.push(this.parseBindingRestElement(e, t));
break;
}
i.push(this.parsePatternWithDefault(e, t)), this.match(']') || this.expect(',');
}
} return this.expect(']'), this.finalize(s, new ArrayPattern(i));
}
parsePropertyPattern(e, t) {
const s = this.createNode();
let i = !1;
let r = !1;
let n; let
a;
if (this.lookahead.type === 3) {
const i = this.lookahead;
n = this.parseVariableIdentifier();
const o = this.finalize(s, new Identifier(i.value));
if (this.match('=')) {
e.push(i), r = !0, this.nextToken();
const t = this.parseAssignmentExpression();
a = this.finalize(this.startNode(i), new AssignmentPattern(o, t));
} else this.match(':') ? (this.expect(':'), a = this.parsePatternWithDefault(e, t)) : (e.push(i), r = !0, a = o);
} else i = this.match('['), n = this.parseObjectPropertyKey(), this.expect(':'), a = this.parsePatternWithDefault(e, t);
return this.finalize(s, new Property('init', n, i, a, !1, r));
}
parseRestProperty(e) {
const t = this.createNode();
this.expect('...');
const s = this.parsePattern(e);
return this.match('=') && this.throwError(Messages.DefaultRestProperty), this.match('}') || this.throwError(Messages.PropertyAfterRestProperty), this.finalize(t, new RestElement(s));
}
parseObjectPattern(e, t) {
const s = this.createNode();
const i = [];
for (this.expect('{'); !this.match('}');) i.push(this.match('...') ? this.parseRestProperty(e) : this.parsePropertyPattern(e, t)), this.match('}') || this.expect(',');
return this.expect('}'), this.finalize(s, new ObjectPattern(i));
}
parsePattern(e, t) {
let s;
return this.match('[') ? s = this.parseArrayPattern(e, t) : this.match('{') ? s = this.parseObjectPattern(e, t) : (!this.matchKeyword('let') || t !== 'const' && t !== 'let' || this.tolerateUnexpectedToken(this.lookahead, Messages.LetInLexicalBinding), e.push(this.lookahead), s = this.parseVariableIdentifier(t)), s;
}
parsePatternWithDefault(e, t) {
const s = this.lookahead;
let i = this.parsePattern(e, t);
if (this.match('=')) {
this.nextToken();
const e = this.context.allowYield;
this.context.allowYield = !0;
const t = this.isolateCoverGrammar(this.parseAssignmentExpression);
this.context.allowYield = e, i = this.finalize(this.startNode(s), new AssignmentPattern(i, t));
}
return i;
}
parseVariableIdentifier(e) {
const t = this.createNode();
const s = this.nextToken();
return s.type === 4 && s.value === 'yield' ? this.context.strict ? this.tolerateUnexpectedToken(s, Messages.StrictReservedWord) : this.context.allowYield || this.throwUnexpectedToken(s) : s.type !== 3 ? this.context.strict && s.type === 4 && this.scanner.isStrictModeReservedWord(s.value) ? this.tolerateUnexpectedToken(s, Messages.StrictReservedWord) : (this.context.strict || s.value !== 'let' || e !== 'var') && this.throwUnexpectedToken(s) : (this.context.isModule || this.context.isAsync) && s.type === 3 && s.value === 'await' && this.tolerateUnexpectedToken(s), this.finalize(t, new Identifier(s.value));
}
parseVariableDeclaration(e) {
const t = this.createNode();
const s = this.parsePattern([], 'var');
this.context.strict && s.type === 'Identifier' && this.scanner.isRestrictedWord(s.name) && this.tolerateError(Messages.StrictVarName);
let i = null;
return this.match('=') ? (this.nextToken(), i = this.isolateCoverGrammar(this.parseAssignmentExpression)) : s.type === 'Identifier' || e.inFor || this.expect('='), this.finalize(t, new VariableDeclarator(s, i));
}
parseVariableDeclarationList(e) {
const t = {
inFor: e.inFor
};
const s = [];
for (s.push(this.parseVariableDeclaration(t)); this.match(',');) this.nextToken(), s.push(this.parseVariableDeclaration(t));
return s;
}
parseVariableStatement() {
const e = this.createNode();
this.expectKeyword('var');
const t = this.parseVariableDeclarationList({
inFor: !1
});
return this.consumeSemicolon(), this.finalize(e, new VariableDeclaration(t, 'var'));
}
parseEmptyStatement() {
const e = this.createNode();
return this.expect(';'), this.finalize(e, new EmptyStatement());
}
parseExpressionStatement() {
const e = this.createNode();
const t = this.parseExpression();
return this.consumeSemicolon(), this.finalize(e, new ExpressionStatement(t));
}
parseIfClause() {
return this.context.strict && this.matchKeyword('function') && this.tolerateError(Messages.StrictFunction), this.parseStatement();
}
parseIfStatement() {
const e = this.createNode();
let t; let
s = null;
this.expectKeyword('if'), this.expect('(');
const i = this.parseExpression();
return !this.match(')') && this.config.tolerant ? (this.tolerateUnexpectedToken(this.nextToken()), t = this.finalize(this.createNode(), new EmptyStatement())) : (this.expect(')'), t = this.parseIfClause(), this.matchKeyword('else') && (this.nextToken(), s = this.parseIfClause())), this.finalize(e, new IfStatement(i, t, s));
}
parseDoWhileStatement() {
const e = this.createNode();
this.expectKeyword('do'), this.tolerateInvalidLoopStatement();
const t = this.context.inIteration;
this.context.inIteration = !0;
const s = this.parseStatement();
this.context.inIteration = t, this.expectKeyword('while'), this.expect('(');
const i = this.parseExpression();
return !this.match(')') && this.config.tolerant ? this.tolerateUnexpectedToken(this.nextToken()) : (this.expect(')'), this.match(';') && this.nextToken()), this.finalize(e, new DoWhileStatement(s, i));
}
parseWhileStatement() {
const e = this.createNode();
let t;
this.expectKeyword('while'), this.expect('(');
const s = this.parseExpression();
if (!this.match(')') && this.config.tolerant) this.tolerateUnexpectedToken(this.nextToken()), t = this.finalize(this.createNode(), new EmptyStatement());
else {
this.expect(')');
const e = this.context.inIteration;
this.context.inIteration = !0, t = this.parseStatement(), this.context.inIteration = e;
}
return this.finalize(e, new WhileStatement(s, t));
}
parseForStatement() {
let e; let t; let s = null;
let i = null;
let r = null;
let n = !0;
let a = !1;
const o = this.createNode();
if (this.expectKeyword('for'), this.matchContextualKeyword('await') && (this.context.isAsync || this.tolerateUnexpectedToken(this.lookahead), a = !0, this.nextToken()), this.expect('('), this.match(';')) this.nextToken();
else if (this.matchKeyword('var')) {
s = this.createNode(), this.nextToken();
const i = this.context.allowIn;
this.context.allowIn = !1;
const r = this.parseVariableDeclarationList({
inFor: !0
});
if (this.context.allowIn = i, !a && r.length === 1 && this.matchKeyword('in')) {
const i = r[0];
i.init && (i.id.type === 'ArrayPattern' || i.id.type === 'ObjectPattern' || this.context.strict) && this.tolerateError(Messages.ForInOfLoopInitializer, 'for-in'), s = this.finalize(s, new VariableDeclaration(r, 'var')), this.nextToken(), e = s, t = this.parseExpression(), s = null;
} else r.length === 1 && r[0].init === null && this.matchContextualKeyword('of') ? (s = this.finalize(s, new VariableDeclaration(r, 'var')), this.nextToken(), e = s, t = this.parseAssignmentExpression(), s = null, n = !1) : (s = this.finalize(s, new VariableDeclaration(r, 'var')), this.expect(';'));
} else if (this.matchKeyword('const') || this.matchKeyword('let')) {
s = this.createNode();
const i = this.nextToken().value;
if (this.context.strict || this.lookahead.value !== 'in') {
const r = this.context.allowIn;
this.context.allowIn = !1;
const a = this.parseBindingList(i, {
inFor: !0
});
this.context.allowIn = r, a.length === 1 && a[0].init === null && this.matchKeyword('in') ? (s = this.finalize(s, new VariableDeclaration(a, i)), this.nextToken(), e = s, t = this.parseExpression(), s = null) : a.length === 1 && a[0].init === null && this.matchContextualKeyword('of') ? (s = this.finalize(s, new VariableDeclaration(a, i)), this.nextToken(), e = s, t = this.parseAssignmentExpression(), s = null, n = !1) : (this.consumeSemicolon(), s = this.finalize(s, new VariableDeclaration(a, i)));
} else s = this.finalize(s, new Identifier(i)), this.nextToken(), e = s, t = this.parseExpression(), s = null;
} else {
const i = this.lookahead;
const r = this.context.isBindingElement;
const a = this.context.isAssignmentTarget;
const o = this.context.firstCoverInitializedNameError;
const u = this.context.allowIn;
if (this.context.allowIn = !1, s = this.inheritCoverGrammar(this.parseAssignmentExpression), this.context.allowIn = u, this.matchKeyword('in')) this.context.isAssignmentTarget && s.type !== 'AssignmentExpression' || this.tolerateError(Messages.InvalidLHSInForIn), this.nextToken(), this.reinterpretExpressionAsPattern(s), e = s, t = this.parseExpression(), s = null;
else if (this.matchContextualKeyword('of')) this.context.isAssignmentTarget && s.type !== 'AssignmentExpression' || this.tolerateError(Messages.InvalidLHSInForLoop), this.nextToken(), this.reinterpretExpressionAsPattern(s), e = s, t = this.parseAssignmentExpression(), s = null, n = !1;
else {
if (this.context.isBindingElement = r, this.context.isAssignmentTarget = a, this.context.firstCoverInitializedNameError = o, this.match(',')) {
const e = [s];
for (; this.match(',');) this.nextToken(), e.push(this.isolateCoverGrammar(this.parseAssignmentExpression));
s = this.finalize(this.startNode(i), new SequenceExpression(e));
}
this.expect(';');
}
}
let u;
if (void 0 === e && (this.match(';') || (i = this.isolateCoverGrammar(this.parseExpression)), this.expect(';'), this.match(')') || (r = this.isolateCoverGrammar(this.parseExpression))), !this.match(')') && this.config.tolerant) this.tolerateUnexpectedToken(this.nextToken()), u = this.finalize(this.createNode(), new EmptyStatement());
else {
this.expect(')'), this.tolerateInvalidLoopStatement();
const e = this.context.inIteration;
this.context.inIteration = !0, u = this.isolateCoverGrammar(this.parseStatement), this.context.inIteration = e;
}
return void 0 === e ? this.finalize(o, new ForStatement(s, i, r, u)) : n ? this.finalize(o, new ForInStatement(e, t, u)) : this.finalize(o, new ForOfStatement(e, t, u, a));
}
parseContinueStatement() {
const e = this.createNode();
this.expectKeyword('continue');
let t = null;
if (this.lookahead.type === 3 && !this.hasLineTerminator) {
const e = this.parseVariableIdentifier();
t = e;
const s = `$${e.name}`;
Object.prototype.hasOwnProperty.call(this.context.labelSet, s) || this.throwError(Messages.UnknownLabel, e.name);
}
return this.consumeSemicolon(), t !== null || this.context.inIteration || this.throwError(Messages.IllegalContinue), this.finalize(e, new ContinueStatement(t));
}
parseBreakStatement() {
const e = this.createNode();
this.expectKeyword('break');
let t = null;
if (this.lookahead.type === 3 && !this.hasLineTerminator) {
const e = this.parseVariableIdentifier();
const s = `$${e.name}`;
Object.prototype.hasOwnProperty.call(this.context.labelSet, s) || this.throwError(Messages.UnknownLabel, e.name), t = e;
}
return this.consumeSemicolon(), t !== null || this.context.inIteration || this.context.inSwitch || this.throwError(Messages.IllegalBreak), this.finalize(e, new BreakStatement(t));
}
parseReturnStatement() {
this.context.inFunctionBody || this.tolerateError(Messages.IllegalReturn);
const e = this.createNode();
this.expectKeyword('return');
const t = !this.match(';') && !this.match('}') && !this.hasLineTerminator && this.lookahead.type !== 2 || this.lookahead.type === 8 || this.lookahead.type === 10 ? this.parseExpression() : null;
return this.consumeSemicolon(), this.finalize(e, new ReturnStatement(t));
}
parseWithStatement() {
this.context.strict && this.tolerateError(Messages.StrictModeWith);
const e = this.createNode();
let t;
this.expectKeyword('with'), this.expect('(');
const s = this.parseExpression();
return !this.match(')') && this.config.tolerant ? (this.tolerateUnexpectedToken(this.nextToken()), t = this.finalize(this.createNode(), new EmptyStatement())) : (this.expect(')'), t = this.parseStatement()), this.finalize(e, new WithStatement(s, t));
}
parseSwitchCase() {
const e = this.createNode();
let t;
this.matchKeyword('default') ? (this.nextToken(), t = null) : (this.expectKeyword('case'), t = this.parseExpression()), this.expect(':');
const s = [];
for (; !(this.match('}') || this.matchKeyword('default') || this.matchKeyword('case'));) s.push(this.parseStatementListItem());
return this.finalize(e, new SwitchCase(t, s));
}
parseSwitchStatement() {
const e = this.createNode();
this.expectKeyword('switch'), this.expect('(');
const t = this.parseExpression();
this.expect(')');
const s = this.context.inSwitch;
this.context.inSwitch = !0;
const i = [];
let r = !1;
for (this.expect('{'); !this.match('}');) {
const e = this.parseSwitchCase();
e.test === null && (r && this.throwError(Messages.MultipleDefaultsInSwitch), r = !0), i.push(e);
}
return this.expect('}'), this.context.inSwitch = s, this.finalize(e, new SwitchStatement(t, i));
}
parseLabelledStatement() {
const e = this.createNode();
const t = this.parseExpression();
let s;
if (t.type === 'Identifier' && this.match(':')) {
this.nextToken();
const e = t;
const i = `$${e.name}`;
let r;
if (Object.prototype.hasOwnProperty.call(this.context.labelSet, i) && this.throwError(Messages.Redeclaration, 'Label', e.name), this.context.labelSet[i] = !0, this.matchKeyword('class')) this.tolerateUnexpectedToken(this.lookahead), r = this.parseClassDeclaration();
else if (this.matchKeyword('function')) {
const e = this.lookahead;
const t = this.parseFunctionDeclaration();
this.context.strict ? this.tolerateUnexpectedToken(e, Messages.StrictFunction) : t.generator && this.tolerateUnexpectedToken(e, Messages.GeneratorInLegacyContext), r = t;
} else r = this.parseStatement();
delete this.context.labelSet[i], s = new LabeledStatement(e, r);
} else this.consumeSemicolon(), s = new ExpressionStatement(t);
return this.finalize(e, s);
}
parseThrowStatement() {
const e = this.createNode();
this.expectKeyword('throw'), this.hasLineTerminator && this.throwError(Messages.NewlineAfterThrow);
const t = this.parseExpression();
return this.consumeSemicolon(), this.finalize(e, new ThrowStatement(t));
}
parseCatchClause() {
const e = this.createNode();
this.expectKeyword('catch');
let t = null;
if (this.match('(')) {
this.expect('('), this.match(')') && this.throwUnexpectedToken(this.lookahead);
const e = [];
t = this.parsePattern(e);
const s = {};
for (let t = 0; t < e.length; t++) {
const i = `$${e[t].value}`;
Object.prototype.hasOwnProperty.call(s, i) && this.tolerateError(Messages.DuplicateBinding, e[t].value), s[i] = !0;
}
this.context.strict && t.type === 'Identifier' && this.scanner.isRestrictedWord(t.name) && this.tolerateError(Messages.StrictCatchVariable), this.expect(')');
}
const s = this.parseBlock();
return this.finalize(e, new CatchClause(t, s));
}
parseFinallyClause() {
return this.expectKeyword('finally'), this.parseBlock();
}
parseTryStatement() {
const e = this.createNode();
this.expectKeyword('try');
const t = this.parseBlock();
const s = this.matchKeyword('catch') ? this.parseCatchClause() : null;
const i = this.matchKeyword('finally') ? this.parseFinallyClause() : null;
return s || i || this.throwError(Messages.NoCatchOrFinally), this.finalize(e, new TryStatement(t, s, i));
}
parseDebuggerStatement() {
const e = this.createNode();
return this.expectKeyword('debugger'), this.consumeSemicolon(), this.finalize(e, new DebuggerStatement());
}
parseStatement() {
let e;
switch (this.lookahead.type) {
case 1:
case 5:
case 6:
case 8:
case 10:
case 9:
e = this.parseExpressionStatement();
break;
case 7:
const t = this.lookahead.value;
e = t === '{' ? this.parseBlock() : t === '(' ? this.parseExpressionStatement() : t === ';' ? this.parseEmptyStatement() : this.parseExpressionStatement();
break;
case 3:
e = this.matchAsyncFunction() ? this.parseFunctionDeclaration() : this.parseLabelledStatement();
break;
case 4:
switch (this.lookahead.value) {
case 'break':
e = this.parseBreakStatement();
break;
case 'continue':
e = this.parseContinueStatement();
break;
case 'debugger':
e = this.parseDebuggerStatement();
break;
case 'do':
e = this.parseDoWhileStatement();
break;
case 'for':
e = this.parseForStatement();
break;
case 'function':
e = this.parseFunctionDeclaration();
break;
case 'if':
e = this.parseIfStatement();
break;
case 'return':
e = this.parseReturnStatement();
break;
case 'switch':
e = this.parseSwitchStatement();
break;
case 'throw':
e = this.parseThrowStatement();
break;
case 'try':
e = this.parseTryStatement();
break;
case 'var':
e = this.parseVariableStatement();
break;
case 'while':
e = this.parseWhileStatement();
break;
case 'with':
e = this.parseWithStatement();
break;
default:
e = this.parseExpressionStatement();
}
break;
default:
e = this.throwUnexpectedToken(this.lookahead);
}
return e;
}
parseFunctionSourceElements() {
const e = this.createNode();
this.expect('{');
const t = this.parseDirectivePrologues();
const s = this.context.labelSet;
const i = this.context.inIteration;
const r = this.context.inSwitch;
const n = this.context.inFunctionBody;
for (this.context.labelSet = {}, this.context.inIteration = !1, this.context.inSwitch = !1, this.context.inFunctionBody = !0; this.lookahead.type !== 2 && !this.match('}');) t.push(this.parseStatementListItem());
return this.expect('}'), this.context.labelSet = s, this.context.inIteration = i, this.context.inSwitch = r, this.context.inFunctionBody = n, this.finalize(e, new BlockStatement(t));
}
validateParam(e, t, s) {
const i = `$${s}`;
this.context.strict ? (this.scanner.isRestrictedWord(s) && (e.stricted = t, e.message = Messages.StrictParamName), Object.prototype.hasOwnProperty.call(e.paramSet, i) && (e.stricted = t, e.hasDuplicateParameterNames = !0)) : e.firstRestricted || (this.scanner.isRestrictedWord(s) ? (e.firstRestricted = t, e.message = Messages.StrictParamName) : this.scanner.isStrictModeReservedWord(s) ? (e.firstRestricted = t, e.message = Messages.StrictReservedWord) : Object.prototype.hasOwnProperty.call(e.paramSet, i) && (e.stricted = t, e.hasDuplicateParameterNames = !0)), typeof Object.defineProperty === 'function' ? Object.defineProperty(e.paramSet, i, {
value: !0,
enumerable: !0,
writable: !0,
configurable: !0
}) : e.paramSet[i] = !0;
}
parseRestElement(e) {
const t = this.createNode();
this.expect('...');
const s = this.parsePattern(e);
return this.match('=') && this.throwError(Messages.DefaultRestParameter), this.match(')') || this.throwError(Messages.ParameterAfterRestParameter), this.finalize(t, new RestElement(s));
}
parseFormalParameter(e) {
const t = [];
const s = this.match('...') ? this.parseRestElement(t) : this.parsePatternWithDefault(t);
for (let s = 0; s < t.length; s++) this.validateParam(e, t[s], t[s].value);
e.simple = e.simple && s instanceof Identifier, e.params.push(s);
}
parseFormalParameters(e) {
const t = {
simple: !0,
hasDuplicateParameterNames: !1,
params: [],
firstRestricted: e
};
if (this.expect('('), !this.match(')')) for (t.paramSet = {}; this.lookahead.type !== 2 && (this.parseFormalParameter(t), !this.match(')')) && (this.expect(','), !this.match(')')););
return this.expect(')'), t.hasDuplicateParameterNames && (this.context.strict || this.context.isAsync || !t.simple) && this.throwError(Messages.DuplicateParameter), {
simple: t.simple,
params: t.params,
stricted: t.stricted,
firstRestricted: t.firstRestricted,
message: t.message
};
}
matchAsyncFunction() {
let e = this.matchContextualKeyword('async');
if (e) {
const t = this.scanner.saveState();
this.scanner.scanComments();
const s = this.scanner.lex();
this.scanner.restoreState(t), e = t.lineNumber === s.lineNumber && s.type === 4 && s.value === 'function';
}
return e;
}
parseFunctionDeclaration(e) {
const t = this.createNode();
const s = this.matchContextualKeyword('async');
s && (this.context.inIteration && this.tolerateError(Messages.AsyncFunctionInSingleStatementContext), this.nextToken()), this.expectKeyword('function');
const i = this.match('*');
let r;
i && this.nextToken();
let n = null;
let a = null;
if (!e || !this.match('(')) {
const e = this.lookahead;
n = this.parseVariableIdentifier(), this.context.strict ? this.scanner.isRestrictedWord(e.value) && this.tolerateUnexpectedToken(e, Messages.StrictFunctionName) : this.scanner.isRestrictedWord(e.value) ? (a = e, r = Messages.StrictFunctionName) : this.scanner.isStrictModeReservedWord(e.value) && (a = e, r = Messages.StrictReservedWord);
}
const o = this.context.isAsync;
const u = this.context.allowYield;
this.context.isAsync = s, this.context.allowYield = !i;
const h = this.parseFormalParameters(a);
const c = h.params;
const l = h.stricted;
a = h.firstRestricted, h.message && (r = h.message);
const p = this.context.strict;
const m = this.context.allowStrictDirective;
this.context.allowStrictDirective = h.simple;
const d = this.parseFunctionSourceElements();
return this.context.strict && a && this.throwUnexpectedToken(a, r), this.context.strict && l && this.tolerateUnexpectedToken(l, r), this.context.strict = p, this.context.allowStrictDirective = m, this.context.isAsync = o, this.context.allowYield = u, s ? this.finalize(t, new AsyncFunctionDeclaration(n, c, d, i)) : this.finalize(t, new FunctionDeclaration(n, c, d, i));
}
parseFunctionExpression() {
const e = this.createNode();
const t = this.matchContextualKeyword('async');
t && this.nextToken(), this.expectKeyword('function');
const s = this.match('*');
let i;
s && this.nextToken();
let r; let
n = null;
const a = this.context.isAsync;
const o = this.context.allowYield;
if (this.context.isAsync = t, this.context.allowYield = !s, !this.match('(')) {
const e = this.lookahead;
n = this.context.strict || s || !this.matchKeyword('yield') ? this.parseVariableIdentifier() : this.parseIdentifierName(), this.context.strict ? this.scanner.isRestrictedWord(e.value) && this.tolerateUnexpectedToken(e, Messages.StrictFunctionName) : this.scanner.isRestrictedWord(e.value) ? (r = e, i = Messages.StrictFunctionName) : this.scanner.isStrictModeReservedWord(e.value) && (r = e, i = Messages.StrictReservedWord);
}
const u = this.parseFormalParameters(r);
const h = u.params;
const c = u.stricted;
r = u.firstRestricted, u.message && (i = u.message);
const l = this.context.strict;
const p = this.context.allowStrictDirective;
this.context.allowStrictDirective = u.simple;
const m = this.parseFunctionSourceElements();
return this.context.strict && r && this.throwUnexpectedToken(r, i), this.context.strict && c && this.tolerateUnexpectedToken(c, i), this.context.strict = l, this.context.allowStrictDirective = p, this.context.isAsync = a, this.context.allowYield = o, this.finalize(e, new FunctionExpression(n, h, m, s, t));
}
parseDirective() {
const e = this.lookahead;
const t = this.createNode();
const s = this.parseExpression();
const i = s.type === 'Literal' ? this.getTokenRaw(e).slice(1, -1) : null;
return this.consumeSemicolon(), this.finalize(t, i ? new Directive(s, i) : new ExpressionStatement(s));
}
parseDirectivePrologues() {
let e = null;
const t = [];
for (;;) {
const s = this.lookahead;
if (s.type !== 8) break;
const i = this.parseDirective();
t.push(i);
const r = i.directive;
if (typeof r !== 'string') break;
r === 'use strict' ? (this.context.strict = !0, e && this.tolerateUnexpectedToken(e, Messages.StrictOctalLiteral), this.context.allowStrictDirective || this.tolerateUnexpectedToken(s, Messages.IllegalLanguageModeDirective)) : !e && s.octal && (e = s);
}
return t;
}
qualifiedPropertyName(e) {
switch (e.type) {
case 3:
case 8:
case 1:
case 5:
case 6:
case 4:
return !0;
case 7:
return e.value === '[' || e.value === '#';
}
return !1;
}
parseGetterMethod() {
const e = this.createNode();
const t = this.context.allowYield;
this.context.allowYield = !0;
const s = this.parseFormalParameters();
s.params.length > 0 && this.tolerateError(Messages.BadGetterArity);
const i = this.parsePropertyMethod(s);
return this.context.allowYield = t, this.finalize(e, new FunctionExpression(null, s.params, i, false, !1));
}
parseSetterMethod() {
const e = this.createNode();
const t = this.context.allowYield;
this.context.allowYield = !0;
const s = this.parseFormalParameters();
s.params.length !== 1 ? this.tolerateError(Messages.BadSetterArity) : s.params[0] instanceof RestElement && this.tolerateError(Messages.BadSetterRestParameter);
const i = this.parsePropertyMethod(s);
return this.context.allowYield = t, this.finalize(e, new FunctionExpression(null, s.params, i, false, !1));
}
parseGeneratorMethod(e) {
const t = this.createNode();
const s = this.context.allowYield;
this.context.allowYield = !0;
const i = this.parseFormalParameters();
this.context.allowYield = !1;
const r = this.parsePropertyMethod(i);
return this.context.allowYield = s, this.finalize(t, new FunctionExpression(null, i.params, r, !0, e));
}
isStartOfExpression() {
let e = !0;
const t = this.lookahead.value;
switch (this.lookahead.type) {
case 7:
e = t === '[' || t === '(' || t === '{' || t === '+' || t === '-' || t === '!' || t === '~' || t === '++' || t === '--' || t === '/' || t === '/=';
break;
case 4:
e = t === 'class' || t === 'delete' || t === 'function' || t === 'let' || t === 'new' || t === 'super' || t === 'this' || t === 'typeof' || t === 'void' || t === 'yield';
}
return e;
}
parseYieldExpression() {
const e = this.createNode();
this.expectKeyword('yield');
let t = null;
let s = !1;
if (!this.hasLineTerminator) {
const e = this.context.allowYield;
this.context.allowYield = !1, s = this.match('*'), s ? (this.nextToken(), t = this.parseAssignmentExpression()) : this.isStartOfExpression() && (t = this.parseAssignmentExpression()), this.context.allowYield = e;
}
return this.finalize(e, new YieldExpression(t, s));
}
parseStaticBlock() {
const e = this.createNode();
this.expect('{');
const t = [];
for (; !this.match('}');) t.push(this.parseStatementListItem());
return this.expect('}'), this.finalize(e, new StaticBlock(t));
}
parseDecorator() {
const e = this.createNode();
this.expect('@');
const t = this.context.strict;
const s = this.context.allowYield;
const i = this.context.isAsync;
this.context.strict = !1, this.context.allowYield = !0, this.context.isAsync = !1;
const r = this.isolateCoverGrammar(this.parseLeftHandSideExpressionAllowCall);
return this.context.strict = t, this.context.allowYield = s, this.context.isAsync = i, this.match(';') && this.throwError(Messages.NoSemicolonAfterDecorator), this.finalize(e, new Decorator(r));
}
parseDecorators() {
let e = null;
for (; this.match('@');) e == null && (e = []), e.push(this.parseDecorator());
return e;
}
parseClassElement(e) {
let t = this.lookahead;
const s = this.createNode();
const i = this.context.inConstructor;
let r = '';
let n = null;
let a = null;
let o = !1;
let u = !1;
let h = !1;
let c = !1;
let l = !1;
let p = !1;
const m = this.parseDecorators();
if (m && (t = this.lookahead), this.match('*')) this.nextToken();
else {
o = this.match('['), this.match('#') && (p = !0, this.nextToken(), t = this.lookahead), n = this.parseObjectPropertyKey(p);
const e = n;
if (this.context.inConstructor = t.type === 3 && t.value === 'constructor', e.name === 'static' && (this.qualifiedPropertyName(this.lookahead) || this.match('*')) && (t = this.lookahead, h = !0, o = this.match('['), this.match('*') ? (this.nextToken(), this.match('#') && (p = !0, this.nextToken(), t = this.lookahead)) : (this.match('#') && (p = !0, this.nextToken(), t = this.lookahead), n = this.parseObjectPropertyKey(p))), e.name === 'static' && this.match('{')) return this.parseStaticBlock();
if (t.type === 3 && !this.hasLineTerminator && t.value === 'async') {
const e = this.lookahead.value;
e !== ':' && e !== '(' && (c = !0, l = this.match('*'), l && this.nextToken(), t = this.lookahead, o = this.match('['), this.match('*') ? (this.nextToken(), this.match('#') && (p = !0, this.nextToken())) : (this.match('#') && (p = !0, this.nextToken(), t = this.lookahead), n = this.parseObjectPropertyKey(p)), t.type !== 3 || t.value !== 'constructor' || h || this.tolerateUnexpectedToken(t, Messages.ConstructorIsAsync));
}
}
t.type === 3 && t.value === 'constructor' && p && this.tolerateUnexpectedToken(t, Messages.ConstructorIsPrivate);
const d = this.qualifiedPropertyName(this.lookahead);
if (t.type === 3 || t.type === 8 ? t.value === 'get' && d ? (r = 'get', this.match('#') && (p = !0, this.nextToken(), t = this.lookahead), o = this.match('['), n = this.parseObjectPropertyKey(p), this.context.allowYield = !1, a = this.parseGetterMethod()) : t.value === 'set' && d ? (r = 'set', this.match('#') && (p = !0, this.nextToken(), t = this.lookahead), o = this.match('['), n = this.parseObjectPropertyKey(p), a = this.parseSetterMethod()) : this.match('(') || (r = 'property', o = !1, this.match('=') && (this.nextToken(), a = this.isolateCoverGrammar(this.parseAssignmentExpression))) : t.type === 7 && t.value === '*' && d ? (r = 'init', o = this.match('['), n = this.parseObjectPropertyKey(p), a = this.parseGeneratorMethod(c), u = !0) : t.type !== 7 || t.value !== '[' || this.match('(') || (r = 'property', o = !0, this.match('=') && (this.nextToken(), a = this.isolateCoverGrammar(this.parseAssignmentExpression))), !r && n && this.match('(')) {
const e = this.context.inClassConstructor;
this.context.inClassConstructor = t.value === 'constructor', r = 'init', a = c ? this.parsePropertyMethodAsyncFunction(l) : this.parsePropertyMethodFunction(l), this.context.inClassConstructor = e, u = !0;
}
return r || this.throwUnexpectedToken(this.lookahead), r === 'init' && (r = 'method'), o || (h && this.isPropertyKey(n, 'prototype') && this.throwUnexpectedToken(t, Messages.StaticPrototype), !h && this.isPropertyKey(n, 'constructor') && ((r !== 'method' || !u || a && a.generator) && this.throwUnexpectedToken(t, Messages.ConstructorSpecialMethod), e.value ? this.throwUnexpectedToken(t, Messages.DuplicateConstructor) : e.value = !0, r = 'constructor')), this.context.inConstructor = i, r === 'property' ? (this.consumeSemicolon(), this.finalize(s, new PropertyDefinition(n, o, a, h, m))) : this.finalize(s, new MethodDefinition(n, o, a, r, h, m));
}
parseClassElementList() {
const e = [];
const t = {
value: !1
};
for (this.expect('{'); !this.match('}');) this.match(';') ? this.nextToken() : e.push(this.parseClassElement(t));
return this.expect('}'), e;
}
parseClassBody() {
const e = this.createNode();
const t = this.parseClassElementList();
return this.finalize(e, new ClassBody(t));
}
parseClassDeclaration(e) {
const t = this.createNode();
const s = this.context.strict;
const i = this.context.allowSuper;
this.context.strict = !0, this.expectKeyword('class');
const r = e && this.lookahead.type !== 3 ? null : this.parseVariableIdentifier();
let n = null;
this.matchKeyword('extends') && (this.nextToken(), n = this.isolateCoverGrammar(this.parseLeftHandSideExpressionAllowCall), this.context.allowSuper = !0);
const a = this.parseClassBody();
return this.context.allowSuper = i, this.context.strict = s, this.finalize(t, new ClassDeclaration(r, n, a, this.context.decorators));
}
parseClassExpression() {
const e = this.createNode();
const t = this.context.strict;
this.context.strict = !0, this.expectKeyword('class');
const s = this.lookahead.type === 3 ? this.parseVariableIdentifier() : null;
let i = null;
this.matchKeyword('extends') && (this.nextToken(), i = this.isolateCoverGrammar(this.parseLeftHandSideExpressionAllowCall), this.context.allowSuper = !0);
const r = this.parseClassBody();
return this.context.strict = t, this.finalize(e, new ClassExpression(s, i, r, this.context.decorators));
}
parseModule() {
this.context.strict = !0, this.context.isModule = !0, this.scanner.isModule = !0;
const e = this.createNode();
const t = this.parseDirectivePrologues();
for (; this.lookahead.type !== 2;) t.push(this.parseStatementListItem());
return this.finalize(e, new Module(t));
}
parseScript() {
const e = this.createNode();
const t = this.parseDirectivePrologues();
for (; this.lookahead.type !== 2;) t.push(this.parseStatementListItem());
return this.finalize(e, new Script(t));
}
parseImportAttributes() {
if (this.lookahead.value === 'assert') {
this.nextToken(), this.expect('{');
const e = [];
for (; !this.match('}');) e.push(this.parseImportAttribute()), this.match('}') || this.expectCommaSeparator();
return this.expect('}'), e;
}
return null;
}
parseImportAttribute() {
const e = this.createNode();
this.lookahead.type !== 3 && this.throwUnexpectedToken(this.nextToken());
const t = this.parseIdentifierName();
this.match(':') || this.throwUnexpectedToken(this.nextToken()), this.nextToken();
const s = this.nextToken();
const i = this.getTokenRaw(s);
const r = this.finalize(e, new Literal(s.value, i));
return this.finalize(e, new ImportAttribute(t, r));
}
parseModuleSpecifier() {
const e = this.createNode();
this.lookahead.type !== 8 && this.throwError(Messages.InvalidModuleSpecifier);
const t = this.nextToken();
const s = this.getTokenRaw(t);
return Character.isStringWellFormedUnicode(t.value) || this.throwError(Messages.InvalidModuleSpecifier), this.finalize(e, new Literal(t.value, s));
}
parseImportSpecifier() {
const e = this.createNode();
let t; let
s;
return this.lookahead.type === 3 ? (t = this.parseVariableIdentifier(), s = t, this.matchContextualKeyword('as') && (this.nextToken(), s = this.parseVariableIdentifier())) : (t = this.lookahead.type == 8 ? this.parseModuleSpecifier() : this.parseIdentifierName(), s = t, this.matchContextualKeyword('as') ? (this.nextToken(), s = this.parseVariableIdentifier()) : this.throwUnexpectedToken(this.nextToken())), this.finalize(e, new ImportSpecifier(s, t));
}
parseNamedImports() {
this.expect('{');
const e = [];
for (; !this.match('}');) e.push(this.parseImportSpecifier()), this.match('}') || this.expect(',');
return this.expect('}'), e;
}
parseImportDefaultSpecifier() {
const e = this.createNode();
const t = this.parseIdentifierName();
return this.finalize(e, new ImportDefaultSpecifier(t));
}
parseImportNamespaceSpecifier() {
const e = this.createNode();
this.expect('*'), this.matchContextualKeyword('as') || this.throwError(Messages.NoAsAfterImportNamespace), this.lookahead.escaped && this.throwError(Messages.NoAsAndFromEscapeSequences), this.nextToken();
const t = this.parseIdentifierName();
return this.finalize(e, new ImportNamespaceSpecifier(t));
}
parseImportDeclaration() {
this.context.inFunctionBody && this.throwError(Messages.IllegalImportDeclaration);
const e = this.createNode();
let t;
this.expectKeyword('import');
let s = [];
if (this.lookahead.type === 8) t = this.parseModuleSpecifier();
else {
if (this.match('{') ? s = s.concat(this.parseNamedImports()) : this.match('*') ? s.push(this.parseImportNamespaceSpecifier()) : this.isIdentifierName(this.lookahead) && !this.matchKeyword('default') ? (s.push(this.parseImportDefaultSpecifier()), this.match(',') && (this.nextToken(), this.match('*') ? s.push(this.parseImportNamespaceSpecifier()) : this.match('{') ? s = s.concat(this.parseNamedImports()) : this.throwUnexpectedToken(this.lookahead))) : this.throwUnexpectedToken(this.nextToken()), !this.matchContextualKeyword('from')) {
const e = this.lookahead.value ? Messages.UnexpectedToken : Messages.MissingFromClause;
this.throwError(e, this.lookahead.value);
}
this.nextToken(), t = this.parseModuleSpecifier();
}
const i = this.parseImportAttributes();
return this.consumeSemicolon(), this.finalize(e, new ImportDeclaration(s, t, i));
}
parseExportSpecifier() {
const e = this.createNode();
const t = this.lookahead.type == 8 ? this.parseModuleSpecifier() : this.parseIdentifierName();
let s = t;
return this.matchContextualKeyword('as') && (this.lookahead.escaped && this.throwError(Messages.NoAsAndFromEscapeSequences), this.nextToken(), s = this.lookahead.type == 8 ? this.parseModuleSpecifier() : this.parseIdentifierName()), this.finalize(e, new ExportSpecifier(t, s));
}
parseExportDeclaration() {
this.context.inFunctionBody && this.throwError(Messages.IllegalExportDeclaration);
const e = this.createNode();
let t;
if (this.expectKeyword('export'), this.matchKeyword('default')) {
if (this.nextToken(), this.matchKeyword('function')) {
const s = this.parseFunctionDeclaration(!0);
t = this.finalize(e, new ExportDefaultDeclaration(s));
} else if (this.matchKeyword('class')) {
const s = this.parseClassDeclaration(!0);
t = this.finalize(e, new ExportDefaultDeclaration(s));
} else if (this.matchContextualKeyword('async')) {
const s = this.matchAsyncFunction() ? this.parseFunctionDeclaration(!0) : this.parseAssignmentExpression();
t = this.finalize(e, new ExportDefaultDeclaration(s));
} else {
this.matchContextualKeyword('from') && this.throwError(Messages.UnexpectedToken, this.lookahead.value);
const s = this.match('{') ? this.parseObjectInitializer() : this.match('[') ? this.parseArrayInitializer() : this.parseAssignmentExpression();
this.consumeSemicolon(), t = this.finalize(e, new ExportDefaultDeclaration(s));
}
} else if (this.match('*')) {
this.nextToken();
let s = null;
if (this.matchContextualKeyword('as') && (this.lookahead.escaped && this.throwError(Messages.NoAsAndFromEscapeSequences), this.nextToken(), s = this.lookahead.type == 8 ? this.parseModuleSpecifier() : this.parseIdentifierName()), !this.matchContextualKeyword('from')) {
const e = this.lookahead.value ? Messages.UnexpectedToken : Messages.MissingFromClause;
this.throwError(e, this.lookahead.value);
}
this.lookahead.escaped && this.throwError(Messages.NoAsAndFromEscapeSequences), this.nextToken();
const i = this.parseModuleSpecifier();
const r = this.parseImportAttributes();
this.consumeSemicolon(), t = this.finalize(e, new ExportAllDeclaration(i, s, r));
} else if (this.lookahead.type === 4) {
let s;
switch (this.lookahead.value) {
case 'let':
case 'const':
s = this.parseLexicalDeclaration({
inFor: !1
});
break;
case 'var':
case 'class':
case 'function':
s = this.parseStatementListItem();
break;
default:
this.throwUnexpectedToken(this.lookahead);
}
t = this.finalize(e, new ExportNamedDeclaration(s, [], null, null));
} else if (this.matchAsyncFunction()) {
const s = this.parseFunctionDeclaration();
t = this.finalize(e, new ExportNamedDeclaration(s, [], null, null));
} else {
const s = [];
let i = null;
let r = !1;
let n = null;
for (this.expect('{'); !this.match('}');) r = r || this.matchKeyword('default'), s.push(this.parseExportSpecifier()), this.match('}') || this.expect(',');
if (this.expect('}'), this.matchContextualKeyword('from')) this.lookahead.escaped && this.throwError(Messages.NoAsAndFromEscapeSequences), this.nextToken(), i = this.parseModuleSpecifier(), n = this.parseImportAttributes(), this.consumeSemicolon();
else if (r) {
const e = this.lookahead.value ? Messages.UnexpectedToken : Messages.MissingFromClause;
this.throwError(e, this.lookahead.value);
} else n = this.parseImportAttributes(), this.consumeSemicolon();
t = this.finalize(e, new ExportNamedDeclaration(null, s, i, n));
}
return t;
}
};
const XHTMLEntities = {
quot: '"',
amp: '&',
apos: "'",
gt: '>',
nbsp: ' ',
iexcl: '¡',
cent: '¢',
pound: '£',
curren: '¤',
yen: '¥',
brvbar: '¦',
sect: '§',
uml: '¨',
copy: '©',
ordf: 'ª',
laquo: '«',
not: '¬',
shy: '',
reg: '®',
macr: '¯',
deg: '°',
plusmn: '±',
sup2: '²',
sup3: '³',
acute: '´',
micro: 'µ',
para: '¶',
middot: '·',
cedil: '¸',
sup1: '¹',
ordm: 'º',
raquo: '»',
frac14: '¼',
frac12: '½',
frac34: '¾',
iquest: '¿',
Agrave: 'À',
Aacute: 'Á',
Acirc: 'Â',
Atilde: 'Ã',
Auml: 'Ä',
Aring: 'Å',
AElig: 'Æ',
Ccedil: 'Ç',
Egrave: 'È',
Eacute: 'É',
Ecirc: 'Ê',
Euml: 'Ë',
Igrave: 'Ì',
Iacute: 'Í',
Icirc: 'Î',
Iuml: 'Ï',
ETH: 'Ð',
Ntilde: 'Ñ',
Ograve: 'Ò',
Oacute: 'Ó',
Ocirc: 'Ô',
Otilde: 'Õ',
Ouml: 'Ö',
times: '×',
Oslash: 'Ø',
Ugrave: 'Ù',
Uacute: 'Ú',
Ucirc: 'Û',
Uuml: 'Ü',
Yacute: 'Ý',
THORN: 'Þ',
szlig: 'ß',
agrave: 'à',
aacute: 'á',
acirc: 'â',
atilde: 'ã',
auml: 'ä',
aring: 'å',
aelig: 'æ',
ccedil: 'ç',
egrave: 'è',
eacute: 'é',
ecirc: 'ê',
euml: 'ë',
igrave: 'ì',
iacute: 'í',
icirc: 'î',
iuml: 'ï',
eth: 'ð',
ntilde: 'ñ',
ograve: 'ò',
oacute: 'ó',
ocirc: 'ô',
otilde: 'õ',
ouml: 'ö',
divide: '÷',
oslash: 'ø',
ugrave: 'ù',
uacute: 'ú',
ucirc: 'û',
uuml: 'ü',
yacute: 'ý',
thorn: 'þ',
yuml: 'ÿ',
OElig: 'Œ',
oelig: 'œ',
Scaron: 'Š',
scaron: 'š',
Yuml: 'Ÿ',
fnof: 'ƒ',
circ: 'ˆ',
tilde: '˜',
Alpha: 'Α',
Beta: 'Β',
Gamma: 'Γ',
Delta: 'Δ',
Epsilon: 'Ε',
Zeta: 'Ζ',
Eta: 'Η',
Theta: 'Θ',
Iota: 'Ι',
Kappa: 'Κ',
Lambda: 'Λ',
Mu: 'Μ',
Nu: 'Ν',
Xi: 'Ξ',
Omicron: 'Ο',
Pi: 'Π',
Rho: 'Ρ',
Sigma: 'Σ',
Tau: 'Τ',
Upsilon: 'Υ',
Phi: 'Φ',
Chi: 'Χ',
Psi: 'Ψ',
Omega: 'Ω',
alpha: 'α',
beta: 'β',
gamma: 'γ',
delta: 'δ',
epsilon: 'ε',
zeta: 'ζ',
eta: 'η',
theta: 'θ',
iota: 'ι',
kappa: 'κ',
lambda: 'λ',
mu: 'μ',
nu: 'ν',
xi: 'ξ',
omicron: 'ο',
pi: 'π',
rho: 'ρ',
sigmaf: 'ς',
sigma: 'σ',
tau: 'τ',
upsilon: 'υ',
phi: 'φ',
chi: 'χ',
psi: 'ψ',
omega: 'ω',
thetasym: 'ϑ',
upsih: 'ϒ',
piv: 'ϖ',
ensp: ' ',
emsp: ' ',
thinsp: ' ',
zwnj: '',
zwj: '',
lrm: '',
rlm: '',
ndash: '–',
mdash: '—',
lsquo: '‘',
rsquo: '’',
sbquo: '‚',
ldquo: '“',
rdquo: '”',
bdquo: '„',
dagger: '†',
Dagger: '‡',
bull: '•',
hellip: '…',
permil: '‰',
prime: '′',
Prime: '″',
lsaquo: '‹',
rsaquo: '›',
oline: '‾',
frasl: '⁄',
euro: '€',
image: 'ℑ',
weierp: '℘',
real: 'ℜ',
trade: '™',
alefsym: 'ℵ',
larr: '←',
uarr: '↑',
rarr: '→',
darr: '↓',
harr: '↔',
crarr: '↵',
lArr: '⇐',
uArr: '⇑',
rArr: '⇒',
dArr: '⇓',
hArr: '⇔',
forall: '∀',
part: '∂',
exist: '∃',
empty: '∅',
nabla: '∇',
isin: '∈',
notin: '∉',
ni: '∋',
prod: '∏',
sum: '∑',
minus: '−',
lowast: '∗',
radic: '√',
prop: '∝',
infin: '∞',
ang: '∠',
and: '∧',
or: '∨',
cap: '∩',
cup: '∪',
int: '∫',
there4: '∴',
sim: '∼',
cong: '≅',
asymp: '≈',
ne: '≠',
equiv: '≡',
le: '≤',
ge: '≥',
sub: '⊂',
sup: '⊃',
nsub: '⊄',
sube: '⊆',
supe: '⊇',
oplus: '⊕',
otimes: '⊗',
perp: '⊥',
sdot: '⋅',
lceil: '⌈',
rceil: '⌉',
lfloor: '⌊',
rfloor: '⌋',
loz: '◊',
spades: '♠',
clubs: '♣',
hearts: '♥',
diams: '♦',
lang: '⟨',
rang: '⟩'
};
function getQualifiedElementName(e) {
let t;
switch (e.type) {
case 'JSXIdentifier':
t = e.name;
break;
case 'JSXNamespacedName':
const s = e;
t = `${getQualifiedElementName(s.namespace)}:${getQualifiedElementName(s.name)}`;
break;
case 'JSXMemberExpression':
const i = e;
t = `${getQualifiedElementName(i.object)}.${getQualifiedElementName(i.property)}`;
}
return t;
}
TokenName[100] = 'JSXIdentifier', TokenName[101] = 'JSXText';
const JSXParser = class extends Parser {
constructor(e, t, s) {
super(e, t, s);
}
parsePrimaryExpression() {
return this.match('<') ? this.parseJSXRoot() : super.parsePrimaryExpression();
}
startJSX() {
this.scanner.index = this.startMarker.index, this.scanner.lineNumber = this.startMarker.line, this.scanner.lineStart = this.startMarker.index - this.startMarker.column;
}
finishJSX() {
this.nextToken();
}
reenterJSX() {
this.startJSX(), this.expectJSX('}'), this.config.tokens && this.tokens.pop();
}
createJSXNode() {
return this.collectComments(), {
index: this.scanner.index,
line: this.scanner.lineNumber,
column: this.scanner.index - this.scanner.lineStart
};
}
createJSXChildNode() {
return {
index: this.scanner.index,
line: this.scanner.lineNumber,
column: this.scanner.index - this.scanner.lineStart
};
}
scanXHTMLEntity(e) {
let t = '&';
let s = !0;
let i = !1;
let r = !1;
let n = !1;
for (; !this.scanner.eof() && s && !i;) {
const a = this.scanner.source[this.scanner.index];
if (a === e) break;
if (i = a === ';', t += a, ++this.scanner.index, !i) {
switch (t.length) {
case 2:
r = a === '#';
break;
case 3:
r && (n = a === 'x', s = n || Character.isDecimalDigit(a.charCodeAt(0)), r = r && !n);
break;
default:
s = s && !(r && !Character.isDecimalDigit(a.charCodeAt(0))), s = s && !(n && !Character.isHexDigit(a.charCodeAt(0)));
}
}
}
if (s && i && t.length > 2) {
const e = t.substr(1, t.length - 2);
r && e.length > 1 ? t = String.fromCharCode(parseInt(e.substr(1), 10)) : n && e.length > 2 ? t = String.fromCharCode(parseInt(`0${e.substr(1)}`, 16)) : r || n || !XHTMLEntities[e] || (t = XHTMLEntities[e]);
}
return t;
}
lexJSX() {
const e = this.scanner.source.charCodeAt(this.scanner.index);
if (e === 60 || e === 62 || e === 47 || e === 58 || e === 61 || e === 123 || e === 125) {
return {
type: 7,
value: this.scanner.source[this.scanner.index++],
lineNumber: this.scanner.lineNumber,
lineStart: this.scanner.lineStart,
start: this.scanner.index - 1,
end: this.scanner.index
};
}
if (e === 34 || e === 39) {
const e = this.scanner.index;
const t = this.scanner.source[this.scanner.index++];
let s = '';
for (; !this.scanner.eof();) {
const e = this.scanner.source[this.scanner.index++];
if (e === t) break;
s += e === '&' ? this.scanXHTMLEntity(t) : e;
}
return {
type: 8,
value: s,
lineNumber: this.scanner.lineNumber,
lineStart: this.scanner.lineStart,
start: e,
end: this.scanner.index
};
}
if (e === 46) {
const e = this.scanner.source.charCodeAt(this.scanner.index + 1);
const t = this.scanner.source.charCodeAt(this.scanner.index + 2);
const s = e === 46 && t === 46 ? '...' : '.';
const i = this.scanner.index;
return this.scanner.index += s.length, {
type: 7,
value: s,
lineNumber: this.scanner.lineNumber,
lineStart: this.scanner.lineStart,
start: i,
end: this.scanner.index
};
}
if (e === 96) {
return {
type: 10,
value: '',
lineNumber: this.scanner.lineNumber,
lineStart: this.scanner.lineStart,
start: this.scanner.index,
end: this.scanner.index
};
}
if (Character.isIdentifierStart(e) && e !== 92) {
const e = this.scanner.index;
for (++this.scanner.index; !this.scanner.eof();) {
const e = this.scanner.source.charCodeAt(this.scanner.index);
if (Character.isIdentifierPart(e) && e !== 92) ++this.scanner.index;
else {
if (e !== 45) break;
++this.scanner.index;
}
}
return {
type: 100,
value: this.scanner.source.slice(e, this.scanner.index),
lineNumber: this.scanner.lineNumber,
lineStart: this.scanner.lineStart,
start: e,
end: this.scanner.index
};
}
return this.scanner.lex();
}
nextJSXToken() {
this.collectComments(), this.startMarker.index = this.scanner.index, this.startMarker.line = this.scanner.lineNumber, this.startMarker.column = this.scanner.index - this.scanner.lineStart;
const e = this.lexJSX();
return this.lastMarker.index = this.scanner.index, this.lastMarker.line = this.scanner.lineNumber, this.lastMarker.column = this.scanner.index - this.scanner.lineStart, this.config.tokens && this.tokens.push(this.convertToken(e)), e;
}
nextJSXText() {
this.startMarker.index = this.scanner.index, this.startMarker.line = this.scanner.lineNumber, this.startMarker.column = this.scanner.index - this.scanner.lineStart;
const e = this.scanner.index;
let t = '';
for (; !this.scanner.eof();) {
const e = this.scanner.source[this.scanner.index];
if (e === '{' || e === '<') break;
++this.scanner.index, t += e, Character.isLineTerminator(e.charCodeAt(0)) && (++this.scanner.lineNumber, e === '\r' && this.scanner.source[this.scanner.index] === '\n' && ++this.scanner.index, this.scanner.lineStart = this.scanner.index);
}
this.lastMarker.index = this.scanner.index, this.lastMarker.line = this.scanner.lineNumber, this.lastMarker.column = this.scanner.index - this.scanner.lineStart;
const s = {
type: 101,
value: t,
lineNumber: this.scanner.lineNumber,
lineStart: this.scanner.lineStart,
start: e,
end: this.scanner.index
};
return t.length > 0 && this.config.tokens && this.tokens.push(this.convertToken(s)), s;
}
peekJSXToken() {
const e = this.scanner.saveState();
this.scanner.scanComments();
const t = this.lexJSX();
return this.scanner.restoreState(e), t;
}
expectJSX(e) {
const t = this.nextJSXToken();
t.type === 7 && t.value === e || this.throwUnexpectedToken(t);
}
matchJSX(e) {
const t = this.peekJSXToken();
return t.type === 7 && t.value === e;
}
parseJSXIdentifier() {
const e = this.createJSXNode();
const t = this.nextJSXToken();
return t.type !== 100 && this.throwUnexpectedToken(t), this.finalize(e, new JSXIdentifier(t.value));
}
parseJSXElementName() {
const e = this.createJSXNode();
let t = this.parseJSXIdentifier();
if (this.matchJSX(':')) {
const s = t;
this.expectJSX(':');
const i = this.parseJSXIdentifier();
t = this.finalize(e, new JSXNamespacedName(s, i));
} else if (this.matchJSX('.')) {
for (; this.matchJSX('.');) {
const s = t;
this.expectJSX('.');
const i = this.parseJSXIdentifier();
t = this.finalize(e, new JSXMemberExpression(s, i));
}
}
return t;
}
parseJSXAttributeName() {
const e = this.createJSXNode();
let t;
const s = this.parseJSXIdentifier();
if (this.matchJSX(':')) {
const i = s;
this.expectJSX(':');
const r = this.parseJSXIdentifier();
t = this.finalize(e, new JSXNamespacedName(i, r));
} else t = s;
return t;
}
parseJSXStringLiteralAttribute() {
const e = this.createJSXNode();
const t = this.nextJSXToken();
t.type !== 8 && this.throwUnexpectedToken(t);
const s = this.getTokenRaw(t);
return this.finalize(e, new Literal(t.value, s));
}
parseJSXExpressionAttribute() {
const e = this.createJSXNode();
this.expectJSX('{'), this.finishJSX(), this.match('}') && this.tolerateError('JSX attributes must only be assigned a non-empty expression');
const t = this.parseAssignmentExpression();
return this.reenterJSX(), this.finalize(e, new JSXExpressionContainer(t));
}
parseJSXAttributeValue() {
return this.matchJSX('{') ? this.parseJSXExpressionAttribute() : this.matchJSX('<') ? this.parseJSXElement() : this.parseJSXStringLiteralAttribute();
}
parseJSXNameValueAttribute() {
const e = this.createJSXNode();
const t = this.parseJSXAttributeName();
let s = null;
return this.matchJSX('=') && (this.expectJSX('='), s = this.parseJSXAttributeValue()), this.finalize(e, new JSXAttribute(t, s));
}
parseJSXSpreadAttribute() {
const e = this.createJSXNode();
this.expectJSX('{'), this.expectJSX('...'), this.finishJSX();
const t = this.parseAssignmentExpression();
return this.reenterJSX(), this.finalize(e, new JSXSpreadAttribute(t));
}
parseJSXAttributes() {
const e = [];
for (; !this.matchJSX('/') && !this.matchJSX('>');) {
const t = this.matchJSX('{') ? this.parseJSXSpreadAttribute() : this.parseJSXNameValueAttribute();
e.push(t);
}
return e;
}
parseJSXOpeningElement() {
const e = this.createJSXNode();
if (this.expectJSX('<'), this.matchJSX('>')) return this.expectJSX('>'), this.finalize(e, new JSXOpeningFragment(!1));
const t = this.parseJSXElementName();
const s = this.parseJSXAttributes();
const i = this.matchJSX('/');
return i && this.expectJSX('/'), this.expectJSX('>'), this.finalize(e, new JSXOpeningElement(t, i, s));
}
parseJSXBoundaryElement() {
const e = this.createJSXNode();
if (this.expectJSX('<'), this.matchJSX('/')) {
if (this.expectJSX('/'), this.matchJSX('>')) return this.expectJSX('>'), this.finalize(e, new JSXClosingFragment());
const t = this.parseJSXElementName();
return this.expectJSX('>'), this.finalize(e, new JSXClosingElement(t));
}
const t = this.parseJSXElementName();
const s = this.parseJSXAttributes();
const i = this.matchJSX('/');
return i && this.expectJSX('/'), this.expectJSX('>'), this.finalize(e, new JSXOpeningElement(t, i, s));
}
parseJSXEmptyExpression() {
const e = this.createJSXChildNode();
return this.collectComments(), this.lastMarker.index = this.scanner.index, this.lastMarker.line = this.scanner.lineNumber, this.lastMarker.column = this.scanner.index - this.scanner.lineStart, this.finalize(e, new JSXEmptyExpression());
}
parseJSXExpressionContainer() {
const e = this.createJSXNode();
let t;
return this.expectJSX('{'), this.matchJSX('}') ? (t = this.parseJSXEmptyExpression(), this.expectJSX('}')) : (this.finishJSX(), t = this.parseAssignmentExpression(), this.reenterJSX()), this.finalize(e, new JSXExpressionContainer(t));
}
parseJSXChildren() {
const e = [];
for (; !this.scanner.eof();) {
const t = this.createJSXChildNode();
const s = this.nextJSXText();
if (s.start < s.end) {
const i = this.getTokenRaw(s);
const r = this.finalize(t, new JSXText(s.value, i));
e.push(r);
}
if (this.scanner.source[this.scanner.index] !== '{') break;
{
const t = this.parseJSXExpressionContainer();
e.push(t);
}
}
return e;
}
parseComplexJSXElement(e) {
const t = [];
for (; !this.scanner.eof();) {
e.children = e.children.concat(this.parseJSXChildren());
const s = this.createJSXChildNode();
const i = this.parseJSXBoundaryElement();
if (i.type === 'JSXOpeningElement') {
const r = i;
if (r.selfClosing) {
const t = this.finalize(s, new JSXElement(r, [], null));
e.children.push(t);
} else {
t.push(e), e = {
node: s,
opening: r,
closing: null,
children: []
};
}
}
if (i.type === 'JSXClosingElement') {
e.closing = i;
const s = getQualifiedElementName(e.opening.name);
if (s !== getQualifiedElementName(e.closing.name) && this.tolerateError('Expected corresponding JSX closing tag for %0', s), !(t.length > 0)) break;
{
const s = this.finalize(e.node, new JSXElement(e.opening, e.children, e.closing));
(e = t[t.length - 1]).children.push(s), t.pop();
}
}
if (i.type === 'JSXClosingFragment') {
if (e.closing = i, e.opening.type === 'JSXOpeningFragment') break;
this.tolerateError('Expected corresponding JSX closing tag for jsx fragment');
}
}
return e;
}
parseJSXElement() {
const e = this.createJSXNode();
const t = this.parseJSXOpeningElement();
let s = [];
let i = null;
if (!t.selfClosing) {
const r = this.parseComplexJSXElement({
node: e,
opening: t,
closing: i,
children: s
});
s = r.children, i = r.closing;
}
return this.finalize(e, new JSXElement(t, s, i));
}
parseJSXRoot() {
this.config.tokens && this.tokens.pop(), this.startJSX();
const e = this.parseJSXElement();
return this.finishJSX(), e;
}
isStartOfExpression() {
return super.isStartOfExpression() || this.match('<');
}
};
const beforeFunctionExpressionTokens = ['(', '{', '[', 'in', 'typeof', 'instanceof', 'new', 'return', 'case', 'delete', 'throw', 'void', '=', '+=', '-=', '*=', '**=', '/=', '%=', '<<=', '>>=', '>>>=', '&=', '|=', '^=', ',', '+', '-', '*', '**', '/', '%', '++', '--', '<<', '>>', '>>>', '&', '|', '^', '!', '~', '&&', '||', '??', '?', ':', '===', '==', '>=', '<=', '<', '>', '!=', '!=='];
const Reader = class {
values;
curly;
paren;
constructor() {
this.values = [], this.curly = this.paren = -1;
}
beforeFunctionExpression(e) {
return beforeFunctionExpressionTokens.includes(e);
}
isRegexStart() {
const e = this.values[this.values.length - 1];
let t = e !== null;
switch (e) {
case 'this':
case ']':
t = !1;
break;
case ')':
const e = this.values[this.paren - 1];
t = e === 'if' || e === 'while' || e === 'for' || e === 'with';
break;
case '}':
if (t = !0, this.values[this.curly - 3] === 'function') {
const e = this.values[this.curly - 4];
t = !!e && !this.beforeFunctionExpression(e);
} else if (this.values[this.curly - 4] === 'function') {
const e = this.values[this.curly - 5];
t = !e || !this.beforeFunctionExpression(e);
}
}
return t;
}
push(e) {
e.type === 7 || e.type === 4 ? (e.value === '{' ? this.curly = this.values.length : e.value === '(' && (this.paren = this.values.length), this.values.push(e.value)) : this.values.push(null);
}
};
const Tokenizer = class {
errorHandler;
scanner;
trackRange;
trackLoc;
buffer;
reader;
constructor(e, t) {
this.errorHandler = new ErrorHandler(), this.errorHandler.tolerant = !!t && (typeof t.tolerant === 'boolean' && t.tolerant), this.scanner = new Scanner(e, this.errorHandler), this.scanner.trackComment = !!t && (typeof t.comment === 'boolean' && t.comment), this.trackRange = !!t && (typeof t.range === 'boolean' && t.range), this.trackLoc = !!t && (typeof t.loc === 'boolean' && t.loc), this.buffer = [], this.reader = new Reader();
}
errors() {
return this.errorHandler.errors;
}
getNextToken() {
if (this.buffer.length === 0) {
const e = this.scanner.scanComments();
if (this.scanner.trackComment) {
for (let t = 0; t < e.length; ++t) {
const s = e[t];
const i = this.scanner.source.slice(s.slice[0], s.slice[1]);
const r = {
type: s.multiLine ? 'BlockComment' : 'LineComment',
value: i
};
this.trackRange && (r.range = s.range), this.trackLoc && (r.loc = s.loc), this.buffer.push(r);
}
}
if (!this.scanner.eof()) {
let e;
this.trackLoc && (e = {
start: {
line: this.scanner.lineNumber,
column: this.scanner.index - this.scanner.lineStart
},
end: {}
});
let t;
if (this.scanner.source[this.scanner.index] === '/' && this.reader.isRegexStart()) {
const e = this.scanner.saveState();
try {
t = this.scanner.scanRegExp();
} catch (s) {
this.scanner.restoreState(e), t = this.scanner.lex();
}
} else t = this.scanner.lex();
this.reader.push(t);
const s = {
type: TokenName[t.type],
value: this.scanner.source.slice(t.start, t.end)
};
if (this.trackRange && (s.range = [t.start, t.end]), this.trackLoc && (e.end = {
line: this.scanner.lineNumber,
column: this.scanner.index - this.scanner.lineStart
}, s.loc = e), t.type === 9) {
const e = t.pattern;
const i = t.flags;
s.regex = {
pattern: e,
flags: i
};
}
this.buffer.push(s);
}
}
return this.buffer.shift();
}
};
const Visitor = class {
visit(e) {
if (e == null) return e;
switch (e.type) {
case 'AssignmentExpression':
return this.visitAssignmentExpression(e);
case 'AssignmentPattern':
return this.visitAssignmentPattern(e);
case 'ArrayExpression':
return this.visitArrayExpression(e);
case 'ArrayPattern':
return this.visitArrayPattern(e);
case 'ArrowFunctionExpression':
return this.visitArrowFunctionExpression(e);
case 'AwaitExpression':
return this.visitAwaitExpression(e);
case 'BlockStatement':
return this.visitBlockStatement(e);
case 'BinaryExpression':
return this.visitBinaryExpression(e);
case 'BreakStatement':
return this.visitBreakStatement(e);
case 'CallExpression':
return this.visitCallExpression(e);
case 'CatchClause':
return this.visitCatchClause(e);
case 'ChainExpression':
return this.visitChainExpression(e);
case 'ClassBody':
return this.visitClassBody(e);
case 'ClassDeclaration':
return this.visitClassDeclaration(e);
case 'ClassExpression':
return this.visitClassExpression(e);
case 'ConditionalExpression':
return this.visitConditionalExpression(e);
case 'ContinueStatement':
return this.visitContinueStatement(e);
case 'Decorator':
return this.visitDecorator(e);
case 'DoWhileStatement':
return this.visitDoWhileStatement(e);
case 'DebuggerStatement':
return this.visitDebuggerStatement(e);
case 'EmptyStatement':
return this.visitEmptyStatement(e);
case 'ExportAllDeclaration':
return this.visitExportAllDeclaration(e);
case 'ExportDefaultDeclaration':
return this.visitExportDefaultDeclaration(e);
case 'ExportNamedDeclaration':
return this.visitExportNamedDeclaration(e);
case 'ExportSpecifier':
return this.visitExportSpecifier(e);
case 'ExpressionStatement':
return this.visitExpressionStatement(e);
case 'ForStatement':
return this.visitForStatement(e);
case 'ForOfStatement':
return this.visitForOfStatement(e);
case 'ForInStatement':
return this.visitForInStatement(e);
case 'FunctionDeclaration':
return this.visitFunctionDeclaration(e);
case 'FunctionExpression':
return this.visitFunctionExpression(e);
case 'Identifier':
return this.visitIdentifier(e);
case 'IfStatement':
return this.visitIfStatement(e);
case 'ImportAttribute':
return this.visitImportAttribute(e);
case 'ImportExpression':
return this.visitImportExpression(e);
case 'ImportDeclaration':
return this.visitImportDeclaration(e);
case 'ImportDefaultSpecifier':
return this.visitImportDefaultSpecifier(e);
case 'ImportNamespaceSpecifier':
return this.visitImportNamespaceSpecifier(e);
case 'ImportSpecifier':
return this.visitImportSpecifier(e);
case 'Literal':
return this.visitLiteral(e);
case 'LabeledStatement':
return this.visitLabeledStatement(e);
case 'LogicalExpression':
return this.visitLogicalExpression(e);
case 'MemberExpression':
return this.visitMemberExpression(e);
case 'MetaProperty':
return this.visitMetaProperty(e);
case 'MethodDefinition':
return this.visitMethodDefinition(e);
case 'NewExpression':
return this.visitNewExpression(e);
case 'ObjectExpression':
return this.visitObjectExpression(e);
case 'ObjectPattern':
return this.visitObjectPattern(e);
case 'Program':
return this.visitProgram(e);
case 'Property':
return this.visitProperty(e);
case 'PrivateIdentifier':
return this.visitPrivateIdentifier(e);
case 'RestElement':
return this.visitRestElement(e);
case 'ReturnStatement':
return this.visitReturnStatement(e);
case 'SequenceExpression':
return this.visitSequenceExpression(e);
case 'SpreadElement':
return this.visitSpreadElement(e);
case 'StaticBlock':
return this.visitStaticBlock(e);
case 'Super':
return this.visitSuper(e);
case 'SwitchCase':
return this.visitSwitchCase(e);
case 'SwitchStatement':
return this.visitSwitchStatement(e);
case 'TaggedTemplateExpression':
return this.visitTaggedTemplateExpression(e);
case 'TemplateElement':
return this.visitTemplateElement(e);
case 'TemplateLiteral':
return this.visitTemplateLiteral(e);
case 'ThisExpression':
return this.visitThisExpression(e);
case 'ThrowStatement':
return this.visitThrowStatement(e);
case 'TryStatement':
return this.visitTryStatement(e);
case 'UnaryExpression':
return this.visitUnaryExpression(e);
case 'UpdateExpression':
return this.visitUpdateExpression(e);
case 'VariableDeclaration':
return this.visitVariableDeclaration(e);
case 'VariableDeclarator':
return this.visitVariableDeclarator(e);
case 'WhileStatement':
return this.visitWhileStatement(e);
case 'WithStatement':
return this.visitWithStatement(e);
case 'YieldExpression':
return this.visitYieldExpression(e);
}
}
visitNodeList(e) {
if (e == null) return e;
let t = null;
for (let s = 0, i = e.length; s < i; s++) {
const i = this.visit(e[s]);
if (t != null) t.push(i);
else if (i != e[s]) {
t = [];
for (let i = 0; i < s; i++) t.push(e[i]);
t.push(i);
}
}
return t != null ? t : e;
}
visitAssignmentExpression(e) {
const t = this.visit(e.left);
const s = this.visit(e.right);
return t !== e.left || s !== e.right ? new AssignmentExpression(e.operator, t, s) : e;
}
visitAssignmentPattern(e) {
const t = this.visit(e.left);
const s = this.visit(e.right);
return t !== e.left || s !== e.right ? new AssignmentPattern(t, s) : e;
}
visitArrayExpression(e) {
const t = this.visitNodeList(e.elements);
return t !== e.elements ? new ArrayExpression(t) : e;
}
visitArrayPattern(e) {
const t = this.visitNodeList(e.elements);
return t !== e.elements ? new ArrayPattern(t) : e;
}
visitArrowFunctionExpression(e) {
const t = this.visit(e.id);
const s = this.visitNodeList(e.params);
const i = this.visit(e.body);
if (t !== e.id || s !== e.params || i !== e.body) {
const r = new ArrowFunctionExpression(s, i, e.expression, e.async);
return r.id = t, r;
}
return e;
}
visitAwaitExpression(e) {
const t = this.visit(e.argument);
return t !== e.argument ? new AwaitExpression(t) : e;
}
visitBlockStatement(e) {
const t = this.visitNodeList(e.body);
return t !== e.body ? new BlockStatement(t) : e;
}
visitBinaryExpression(e) {
const t = this.visit(e.left);
const s = this.visit(e.right);
return t !== e.left || s !== e.right ? new BinaryExpression(e.operator, t, s) : e;
}
visitBreakStatement(e) {
const t = this.visit(e.label);
return t !== e.label ? new BreakStatement(t) : e;
}
visitCallExpression(e) {
const t = this.visit(e.callee);
const s = this.visitNodeList(e.arguments);
return t !== e.callee || s !== e.arguments ? new CallExpression(t, s, e.optional) : e;
}
visitCatchClause(e) {
const t = this.visit(e.param);
const s = this.visit(e.body);
return t !== e.param || s !== e.body ? new CatchClause(t, s) : e;
}
visitChainExpression(e) {
const t = this.visit(e.expression);
return t !== e.expression ? new ChainExpression(t) : e;
}
visitClassBody(e) {
const t = this.visitNodeList(e.body);
return t !== e.body ? new ClassBody(t) : e;
}
visitClassDeclaration(e) {
const t = this.visit(e.id);
const s = this.visit(e.superClass);
const i = this.visit(e.body);
const r = this.visitNodeList(e.decorators);
return t !== e.id || s !== e.superClass || i !== e.body || r !== e.decorators ? new ClassDeclaration(t, s, i, r) : e;
}
visitClassExpression(e) {
const t = this.visit(e.id);
const s = this.visit(e.superClass);
const i = this.visit(e.body);
const r = this.visitNodeList(e.decorators);
return t !== e.id || s !== e.superClass || i !== e.body || r !== e.decorators ? new ClassExpression(t, s, i, r) : e;
}
visitConditionalExpression(e) {
const t = this.visit(e.test);
const s = this.visit(e.consequent);
const i = this.visit(e.alternate);
return t !== e.test || s !== e.consequent || i !== e.alternate ? new ConditionalExpression(t, s, i) : e;
}
visitContinueStatement(e) {
const t = this.visit(e.label);
return t !== e.label ? new ContinueStatement(t) : e;
}
visitDecorator(e) {
const t = this.visit(e.expression);
return t !== e.expression ? new Decorator(t) : e;
}
visitDoWhileStatement(e) {
const t = this.visit(e.body);
const s = this.visit(e.test);
return t !== e.body || s !== e.test ? new DoWhileStatement(t, s) : e;
}
visitDebuggerStatement(e) {
return e;
}
visitEmptyStatement(e) {
return e;
}
visitExportAllDeclaration(e) {
const t = this.visit(e.source);
const s = this.visit(e.exported);
const i = this.visitNodeList(e.assertions);
return t !== e.source || s !== e.exported || i !== e.assertions ? new ExportAllDeclaration(t, s, i) : e;
}
visitExportDefaultDeclaration(e) {
const t = this.visit(e.declaration);
return t !== e.declaration ? new ExportDefaultDeclaration(t) : e;
}
visitExportNamedDeclaration(e) {
const t = this.visit(e.declaration);
const s = this.visitNodeList(e.specifiers);
const i = this.visit(e.source);
const r = this.visitNodeList(e.assertions);
return t !== e.declaration || s !== e.specifiers || i !== e.source || r !== e.assertions ? new ExportNamedDeclaration(t, s, i, r) : e;
}
visitExportSpecifier(e) {
const t = this.visit(e.exported);
const s = this.visit(e.local);
return t !== e.exported || s !== e.local ? new ExportSpecifier(t, s) : e;
}
visitExpressionStatement(e) {
const t = this.visit(e.expression);
return t !== e.expression ? new ExpressionStatement(t) : e;
}
visitForStatement(e) {
const t = this.visit(e.init);
const s = this.visit(e.test);
const i = this.visit(e.update);
const r = this.visit(e.body);
return t !== e.init || s !== e.test || i !== e.update || r !== e.body ? new ForStatement(t, s, i, r) : e;
}
visitForOfStatement(e) {
const t = this.visit(e.left);
const s = this.visit(e.right);
const i = this.visit(e.body);
return t !== e.left || s !== e.right || i !== e.body ? new ForOfStatement(t, s, i, e.await) : e;
}
visitForInStatement(e) {
const t = this.visit(e.left);
const s = this.visit(e.right);
const i = this.visit(e.body);
return t !== e.left || s !== e.right || i !== e.body ? new ForInStatement(t, s, i) : e;
}
visitFunctionDeclaration(e) {
const t = this.visit(e.id);
const s = this.visitNodeList(e.params);
const i = this.visit(e.body);
return t !== e.id || s !== e.params || i !== e.body ? new FunctionDeclaration(t, s, i, e.generator) : e;
}
visitFunctionExpression(e) {
const t = this.visit(e.id);
const s = this.visitNodeList(e.params);
const i = this.visit(e.body);
return t !== e.id || s !== e.params || i !== e.body ? new FunctionExpression(t, s, i, e.generator, e.async) : e;
}
visitIdentifier(e) {
return e;
}
visitIfStatement(e) {
const t = this.visit(e.test);
const s = this.visit(e.consequent);
const i = this.visit(e.alternate);
return t !== e.test || s !== e.consequent || i !== e.alternate ? new IfStatement(t, s, i) : e;
}
visitImportAttribute(e) {
const t = this.visit(e.key);
const s = this.visit(e.value);
return t !== e.key || s !== e.value ? new ImportAttribute(t, s) : e;
}
visitImportExpression(e) {
const t = this.visit(e.source);
const s = this.visit(e.attributes);
return t !== e.source || s !== e.attributes ? new ImportExpression(t, s) : e;
}
visitImportDeclaration(e) {
const t = this.visitNodeList(e.specifiers);
const s = this.visit(e.source);
const i = this.visitNodeList(e.assertions);
return t !== e.specifiers || s !== e.source || i !== e.assertions ? new ImportDeclaration(t, s, i) : e;
}
visitImportDefaultSpecifier(e) {
const t = this.visit(e.local);
return t !== e.local ? new ImportDefaultSpecifier(t) : e;
}
visitImportNamespaceSpecifier(e) {
const t = this.visit(e.local);
return t !== e.local ? new ImportNamespaceSpecifier(t) : e;
}
visitImportSpecifier(e) {
const t = this.visit(e.local);
const s = this.visit(e.imported);
return t !== e.local || s !== e.imported ? new ImportSpecifier(t, s) : e;
}
visitLiteral(e) {
return e;
}
visitLabeledStatement(e) {
const t = this.visit(e.label);
const s = this.visit(e.body);
return t !== e.label || s !== e.body ? new LabeledStatement(t, s) : e;
}
visitLogicalExpression(e) {
const t = this.visit(e.left);
const s = this.visit(e.right);
return t !== e.left || s !== e.right ? new LogicalExpression(e.operator, t, s) : e;
}
visitMemberExpression(e) {
const t = this.visit(e.object);
const s = this.visit(e.property);
return t !== e.object || s !== e.property ? new MemberExpression(e.computed, t, s, e.optional) : e;
}
visitMetaProperty(e) {
const t = this.visit(e.meta);
const s = this.visit(e.property);
return t !== e.meta || s !== e.property ? new MetaProperty(t, s) : e;
}
visitMethodDefinition(e) {
const t = this.visit(e.key);
const s = this.visit(e.value);
const i = this.visitNodeList(e.decorators);
return t !== e.key || s !== e.value || i !== e.decorators ? new MethodDefinition(t, e.computed, s, e.kind, e.static, i) : e;
}
visitNewExpression(e) {
const t = this.visit(e.callee);
const s = this.visitNodeList(e.arguments);
return t !== e.callee || s !== e.arguments ? new NewExpression(t, s) : e;
}
visitObjectExpression(e) {
const t = this.visitNodeList(e.properties);
return t !== e.properties ? new ObjectExpression(t) : e;
}
visitObjectPattern(e) {
const t = this.visitNodeList(e.properties);
return t !== e.properties ? new ObjectPattern(t) : e;
}
visitProgram(e) {
const t = this.visitNodeList(e.body);
return t !== e.body ? new Program(e.sourceType, t) : e;
}
visitProperty(e) {
const t = this.visit(e.key);
const s = this.visit(e.value);
const i = this.visitNodeList(e.decorators);
return t !== e.key || s !== e.value || i != i ? 'kind' in e ? new Property(e.kind, t, e.computed, s, e.method, e.shorthand) : new PropertyDefinition(t, e.computed, s, e.static, i) : e;
}
visitPrivateIdentifier(e) {
return e;
}
visitRestElement(e) {
const t = this.visit(e.argument);
return t !== e.argument ? new RestElement(t) : e;
}
visitReturnStatement(e) {
const t = this.visit(e.argument);
return t !== e.argument ? new ReturnStatement(t) : e;
}
visitSequenceExpression(e) {
const t = this.visitNodeList(e.expressions);
return t !== e.expressions ? new SequenceExpression(t) : e;
}
visitSpreadElement(e) {
const t = this.visit(e.argument);
return t !== e.argument ? new SpreadElement(t) : e;
}
visitStaticBlock(e) {
const t = this.visitNodeList(e.body);
return t !== e.body ? new StaticBlock(t) : e;
}
visitSuper(e) {
return e;
}
visitSwitchCase(e) {
const t = this.visit(e.test);
const s = this.visitNodeList(e.consequent);
return t !== e.test || s !== e.consequent ? new SwitchCase(t, s) : e;
}
visitSwitchStatement(e) {
const t = this.visit(e.discriminant);
const s = this.visitNodeList(e.cases);
return t !== e.discriminant || s !== e.cases ? new SwitchStatement(t, s) : e;
}
visitTaggedTemplateExpression(e) {
const t = this.visit(e.tag);
const s = this.visit(e.quasi);
return t !== e.tag || s !== e.quasi ? new TaggedTemplateExpression(t, s) : e;
}
visitTemplateElement(e) {
return e;
}
visitTemplateLiteral(e) {
const t = this.visitNodeList(e.quasis);
const s = this.visitNodeList(e.expressions);
return t !== e.quasis || s !== e.expressions ? new TemplateLiteral(t, s) : e;
}
visitThisExpression(e) {
return e;
}
visitThrowStatement(e) {
const t = this.visit(e.argument);
return t !== e.argument ? new ThrowStatement(t) : e;
}
visitTryStatement(e) {
const t = this.visit(e.block);
const s = this.visit(e.handler);
const i = this.visit(e.finalizer);
return t !== e.block || s !== e.handler || i !== e.finalizer ? new TryStatement(t, s, i) : e;
}
visitUnaryExpression(e) {
const t = this.visit(e.argument);
return t !== e.argument ? new UnaryExpression(e.operator, t) : e;
}
visitUpdateExpression(e) {
const t = this.visit(e.argument);
return t !== e.argument ? new UpdateExpression(e.operator, t, e.prefix) : e;
}
visitVariableDeclaration(e) {
const t = this.visitNodeList(e.declarations);
return t !== e.declarations ? new VariableDeclaration(t, e.kind) : e;
}
visitVariableDeclarator(e) {
const t = this.visit(e.id);
const s = this.visit(e.init);
return t !== e.id || s !== e.init ? new VariableDeclarator(t, s) : e;
}
visitWhileStatement(e) {
const t = this.visit(e.test);
const s = this.visit(e.body);
return t !== e.test || s !== e.body ? new WhileStatement(t, s) : e;
}
visitWithStatement(e) {
const t = this.visit(e.object);
const s = this.visit(e.body);
return t !== e.object || s !== e.body ? new WithStatement(t, s) : e;
}
visitYieldExpression(e) {
const t = this.visit(e.argument);
return t !== e.argument ? new YieldExpression(t, e.delegate) : e;
}
};
function parse(e, t, s) {
let i = null;
const r = (e, t) => {
s && s(e, t), i && i.visit(e, t);
};
let n = typeof s === 'function' ? r : null;
let a = !1;
if (t) {
a = typeof t.comment === 'boolean' && t.comment;
const e = typeof t.attachComment === 'boolean' && t.attachComment;
(a || e) && (i = new CommentHandler(), i.attach = e, t.comment = !0, n = r);
}
let o; let
u = !1;
t && typeof t.sourceType === 'string' && (u = t.sourceType === 'module'), o = t && typeof t.jsx === 'boolean' && t.jsx ? new JSXParser(e, t, n) : new Parser(e, t, n);
const h = u ? o.parseModule() : o.parseScript();
return a && i && (h.comments = i.comments), o.config.tokens && (h.tokens = o.tokens), o.config.tolerant && (h.errors = o.errorHandler.errors), h;
}
function parseModule(e, t, s) {
const i = t || {};
return i.sourceType = 'module', parse(e, i, s);
}
function parseScript(e, t, s) {
const i = t || {};
return i.sourceType = 'script', parse(e, i, s);
}
function tokenize(e, t, s) {
const i = new Tokenizer(e, t);
const r = [];
try {
for (;;) {
let e = i.getNextToken();
if (!e) break;
s && (e = s(e)), r.push(e);
}
} catch (e) {
i.errorHandler.tolerate(e);
}
return i.errorHandler.tolerant && (r.errors = i.errors()), r;
}
const version = '6.0.3';
// eslint-disable-next-line camelcase
return {
parse,
parseModule,
parseScript,
tokenize,
Syntax,
version
};
})();
/* eslint-enable */
/* eslint-disable no-bitwise */
/* eslint-disable eqeqeq */
/* eslint-disable max-classes-per-file */
/* eslint-disable no-multi-assign */
const ScopeType = {
Global: 'Global',
Function: 'Function',
Block: 'Block'
};
const VariableType = {
Let: 'Let',
Const: 'Const',
Var: 'Var'
};
class Scope {
/** @type {Scope} */
parent;
variables = {};
/** @type {string} */
type;
constructor(type, parent) {
this.type = type;
this.parent = parent;
this.variables = {};
}
declare(type, name, value = undefined) {
this.checkAlreadyDeclared(name, type);
switch (type) {
case VariableType.Let:
this.variables[name] = { type, value };
break;
case VariableType.Const:
this.variables[name] = { type, value };
break;
case VariableType.Var: {
let scope = this;
while (scope) {
if (scope.type === ScopeType.Function || scope.type === ScopeType.Global) {
scope.variables[name] = { type, value };
scope = undefined;
} else {
scope = scope.parent;
}
}
break;
}
default:
throw new SyntaxError(`Unexpected variable declaration type: ${type}`);
}
}
checkAlreadyDeclared(name, type) {
let scope = this;
while (scope) {
if (scope.variables.hasOwnProperty(name)) {
if (type === VariableType.Const || type === VariableType.Let
|| scope.variables[name].type !== VariableType.Var) {
throw new SyntaxError(`Identifier '${name}' has already been declared`);
}
}
if (scope.type === ScopeType.Function || scope.type === ScopeType.Global) {
scope = undefined;
} else {
scope = scope.parent;
}
}
}
setValue(name, value) {
const reference = this.getReference(name, true);
if (!reference) {
throw new ReferenceError(`${name} is not defined.`);
}
if (reference.type === VariableType.Const) {
throw new TypeError(`Assignment to constant variable: ${name}`);
}
return (reference.value = value);
}
getValue(name) {
const reference = this.getReference(name);
return reference?.value;
}
getReference(name) {
let scope = this;
while (scope) {
if (scope.variables.hasOwnProperty(name)) {
return scope.variables[name];
}
if (scope.type === ScopeType.Global) {
scope = undefined;
} else {
scope = scope.parent;
}
}
return undefined;
}
createChildScope(type) {
return new Scope(type, this);
}
}
class FlowStopper {}
class Break extends FlowStopper {}
class Continue extends FlowStopper {}
class Return extends FlowStopper {
value;
constructor(value) {
super();
this.value = value;
}
}
class Debugger {}
class ChainIsNullish {}
// eslint-disable-next-line no-shadow
class Interpreter {
static execute(esTree, globalVariables) {
const scope = new Scope(ScopeType.Global);
// Add global variables
Object.keys(globalVariables).forEach(key => {
scope.declare(VariableType.Let, key, globalVariables[key]);
});
return { output: this.processNode(esTree, scope), variables: scope };
}
static processorMap = {
[esprima.Syntax.Program]: Interpreter.processProgram.bind(Interpreter),
[esprima.Syntax.ExpressionStatement]: (n, s) => Interpreter.processNode(n.expression, s),
[esprima.Syntax.Literal]: Interpreter.processLiteral.bind(Interpreter),
[esprima.Syntax.MemberExpression]: Interpreter.processMemberExpression.bind(Interpreter),
[esprima.Syntax.BinaryExpression]: Interpreter.processBinaryExpression.bind(Interpreter),
[esprima.Syntax.VariableDeclaration]: Interpreter.processVariableDeclaration.bind(Interpreter),
[esprima.Syntax.VariableDeclarator]: Interpreter.processVariableDeclarator.bind(Interpreter),
[esprima.Syntax.CallExpression]: Interpreter.processCallExpression.bind(Interpreter),
[esprima.Syntax.AssignmentExpression]: Interpreter.processAssigmentExpression.bind(Interpreter),
[esprima.Syntax.Identifier]: Interpreter.processIdentifier.bind(Interpreter),
[esprima.Syntax.IfStatement]: Interpreter.processIfStatement.bind(Interpreter),
[esprima.Syntax.BlockStatement]: Interpreter.processBlockStatement.bind(Interpreter),
[esprima.Syntax.EmptyStatement]: () => {}, // do nothing
[esprima.Syntax.TemplateLiteral]: Interpreter.processTemplateLiteral.bind(Interpreter),
[esprima.Syntax.NewExpression]: Interpreter.processNewExpression.bind(Interpreter),
[esprima.Syntax.FunctionDeclaration]: Interpreter.processFunctionDeclaration.bind(Interpreter),
[esprima.Syntax.ReturnStatement]: Interpreter.processReturnStatement.bind(Interpreter),
[esprima.Syntax.LogicalExpression]: Interpreter.processLogicalExpression.bind(Interpreter),
[esprima.Syntax.UnaryExpression]: Interpreter.processUnaryExpression.bind(Interpreter),
[esprima.Syntax.ArrayExpression]: Interpreter.processArrayExpression.bind(Interpreter),
[esprima.Syntax.ConditionalExpression]: Interpreter.processConditionalExpression.bind(Interpreter),
[esprima.Syntax.ObjectExpression]: Interpreter.processObjectExpression.bind(Interpreter),
[esprima.Syntax.FunctionExpression]: Interpreter.processFunctionExpression.bind(Interpreter),
[esprima.Syntax.ArrowFunctionExpression]: Interpreter.processArrowFunctionExpression.bind(Interpreter),
[esprima.Syntax.ChainExpression]: Interpreter.processChainExpression.bind(Interpreter),
[esprima.Syntax.UpdateExpression]: Interpreter.processUpdateExpression.bind(Interpreter),
[esprima.Syntax.ForStatement]: Interpreter.processForStatement.bind(Interpreter),
[esprima.Syntax.TryStatement]: Interpreter.processTryStatement.bind(Interpreter),
[esprima.Syntax.BreakStatement]: Interpreter.processBreakStatement.bind(Interpreter),
[esprima.Syntax.ContinueStatement]: Interpreter.processContinueStatement.bind(Interpreter),
[esprima.Syntax.DebuggerStatement]: Interpreter.processDebuggerStatement.bind(Interpreter),
[esprima.Syntax.SwitchStatement]: Interpreter.processSwitchStatement.bind(Interpreter)
};
static processNode(node, scope) {
const processor = this.processorMap[node.type];
if (!processor) {
throw new SyntaxError(`Unexpected node type: ${node.type}`);
}
return processor(node, scope);
}
static processSwitchStatement(node, scope) {
const discriminant = this.processNode(node.discriminant, scope);
let matchIndex = -1;
let defaultIndex = -1;
for (let i = 0; i < node.cases.length && matchIndex === -1; i++) {
const switchCase = node.cases[i];
if (!switchCase.test) {
defaultIndex = i;
} else if (this.processNode(switchCase.test, scope) === discriminant) {
matchIndex = i;
}
}
if (matchIndex === -1) matchIndex = defaultIndex;
let returnValue;
if (matchIndex > -1) {
const switchScope = scope.createChildScope(ScopeType.Block);
for (let i = matchIndex; i < node.cases.length && !(returnValue instanceof FlowStopper); i++) {
let result;
const switchCase = node.cases[i];
for (let j = 0; j < switchCase.consequent.length && !(result instanceof FlowStopper); j++) {
result = this.processNode(switchCase.consequent[j], switchScope);
if (!(result instanceof Break || result instanceof Continue)) {
returnValue = result;
}
}
}
}
return returnValue;
}
static processDebuggerStatement() {
// eslint-disable-next-line no-debugger
debugger;
return new Debugger();
}
static processTryStatement(node, scope) {
let returnValue;
try {
returnValue = this.processNode(node.block, scope);
} catch (e) {
// Based on research, I think a Function scope is appropriate here but not certain.
const catchScope = scope.createChildScope(ScopeType.Function);
node.handler.param.returnName = true;
catchScope.declare(VariableType.Var, this.processNode(node.handler.param, catchScope), e);
this.processNode(node.handler.body, catchScope);
} finally {
if (node.finalizer) {
this.processNode(node.finalizer, scope);
}
}
return returnValue;
}
static processObjectExpression(node, scope) {
const returnValue = {};
node.properties.forEach(property => {
property.key.returnName = !node.computed;
const key = this.processNode(property.key, scope);
returnValue[key] = this.processNode(property.value, scope);
});
return returnValue;
}
static processConditionalExpression(node, scope) {
const returnValue = this.processNode(node.test, scope) ? this.processNode(node.consequent, scope) : this.processNode(node.alternate, scope);
return returnValue;
}
static processArrayExpression(node, scope) {
const returnValue = node.elements.map(element => this.processNode(element, scope));
return returnValue;
}
static setScopeValue(targetNode, value, scope) {
switch (targetNode.type) {
case esprima.Syntax.MemberExpression: {
const object = this.processNode(targetNode.object, scope);
targetNode.property.returnName = true;
const propertyName = this.processNode(targetNode.property, scope);
object[propertyName] = value;
break;
}
case esprima.Syntax.Identifier:
scope.setValue(targetNode.name, value);
break;
default:
throw new SyntaxError(`Unexpected target node type in setValue(): ${targetNode.type}`);
}
return value;
}
static processUpdateExpression(node, scope) {
const oldValue = this.processNode(node.argument, scope);
let newValue;
switch (node.operator) {
case '++':
newValue = this.setScopeValue(node.argument, oldValue + 1, scope);
break;
case '--':
newValue = this.setScopeValue(node.argument, oldValue - 1, scope);
break;
default:
throw new SyntaxError(`Unexpected update expression operator: ${node.operator}`);
}
return node.prefix ? newValue : oldValue;
}
static processForStatement(node, scope) {
let returnValue;
this.processNode(node.init, scope);
while (this.processNode(node.test, scope)) {
returnValue = this.processNode(node.body, scope);
if (returnValue instanceof FlowStopper) {
if (returnValue instanceof Return) {
returnValue = returnValue.value;
}
break;
}
this.processNode(node.update, scope);
}
return returnValue;
}
static processUnaryExpression(node, scope) {
let returnValue;
switch (node.operator) {
case '!':
returnValue = !this.processNode(node.argument, scope);
break;
case '~':
returnValue = ~this.processNode(node.argument, scope);
break;
case '-':
returnValue = -this.processNode(node.argument, scope);
break;
case 'typeof':
returnValue = typeof this.processNode(node.argument, scope);
break;
default:
throw new SyntaxError(`Unexpected unary expression operator: ${node.operator}`);
}
return returnValue;
}
static processLogicalExpression(node, scope) {
let returnValue;
switch (node.operator) {
case '&&':
returnValue = this.processNode(node.left, scope) && this.processNode(node.right, scope);
break;
case '||':
returnValue = this.processNode(node.left, scope) || this.processNode(node.right, scope);
break;
case '??':
returnValue = this.processNode(node.left, scope) ?? this.processNode(node.right, scope);
break;
default:
throw new SyntaxError(`Unexpected logical expression operator: ${node.operator}`);
}
return returnValue;
}
static processReturnStatement(node, scope) {
const returnValue = node.argument && this.processNode(node.argument, scope);
return new Return(returnValue);
}
static processContinueStatement() {
return new Continue();
}
static processBreakStatement() {
return new Break();
}
/**
*
* @param {*} node
* @param {Scope} scope
* @returns
*/
static processArrowFunctionExpression(node, scope) {
const func = (...args) => {
const esTreeArgs = args.map(arg => {
const argNode = {
type: esprima.Syntax.Literal,
value: arg
};
return argNode;
});
const funcScope = scope.createChildScope(ScopeType.Function);
for (let i = 0; i < Math.min(esTreeArgs.length, node.params.length); i++) {
const param = node.params[i];
param.returnName = true;
funcScope.declare(
VariableType.Var,
this.processNode(param, funcScope),
this.processNode(esTreeArgs[i], funcScope)
);
}
let returnValue = this.processNode(node.body, funcScope);
if (returnValue instanceof Return) {
returnValue = returnValue.value;
}
return returnValue;
};
return func;
}
static processChainExpression(node, scope) {
let returnValue;
switch (node.expression.type) {
case esprima.Syntax.CallExpression:
case esprima.Syntax.MemberExpression: {
returnValue = this.processNode(node.expression, scope);
break;
}
default:
throw new SyntaxError(`Unexpected chain expression type: ${node.expression.type}`);
}
if (returnValue instanceof ChainIsNullish) returnValue = undefined;
return returnValue;
}
static processFunctionDeclaration(node, scope) {
const func = (...args) => {
const esTreeArgs = args.map(arg => {
const argNode = {
type: esprima.Syntax.Literal,
value: arg
};
return argNode;
});
const funcScope = scope.createChildScope(ScopeType.Function);
for (let i = 0; i < Math.min(esTreeArgs.length, node.params.length); i++) {
const param = node.params[i];
param.returnName = true;
funcScope.declare(
VariableType.Var,
this.processNode(param, funcScope),
this.processNode(esTreeArgs[i], funcScope)
);
}
let returnValue = this.processNode(node.body, funcScope);
if (returnValue instanceof Return) {
returnValue = returnValue.value;
}
return returnValue;
};
if (node.id) {
node.id.returnName = true;
const funcName = this.processNode(node.id, scope);
scope.declare(VariableType.Var, funcName, func);
}
return func;
}
static processFunctionExpression(node, scope) {
const func = (...args) => {
const esTreeArgs = args.map(arg => {
const argNode = {
type: esprima.Syntax.Literal,
value: arg
};
return argNode;
});
const funcScope = scope.createChildScope(ScopeType.Function);
for (let i = 0; i < Math.min(esTreeArgs.length, node.params.length); i++) {
const param = node.params[i];
param.returnName = true;
funcScope.declare(
VariableType.Var,
this.processNode(param, funcScope),
this.processNode(esTreeArgs[i], funcScope)
);
}
let returnValue = this.processNode(node.body, funcScope);
if (returnValue instanceof Return) {
returnValue = returnValue.value;
}
return returnValue;
};
return func;
}
static processProgram(node, scope) {
let returnValue;
node.body.forEach(childNode => {
returnValue = this.processNode(childNode, scope);
});
return returnValue;
}
static processNewExpression(node, scope) {
const args = node.arguments.map(argument => this.processNode(argument, scope));
return Reflect.construct(this.processNode(node.callee, scope), args);
}
static processTemplateLiteral(node, scope) {
let returnValue = '';
for (let i = 0; i < node.quasis.length; i++) {
returnValue += node.quasis[i].value.cooked;
if (!node.quasis[i].tail) {
returnValue += this.processNode(node.expressions[i], scope);
}
}
return returnValue;
}
static processBlockStatement(node, scope) {
let returnValue;
// TODO: I don't think we need to ignore the block scope in a function declaration. Test it.
// switch (context.type) {
// case esprima.Syntax.FunctionDeclaration:
// break;
// default:
const blockScope = scope.createChildScope(ScopeType.Block);
// }
for (let i = 0; i < node.body.length; i++) {
const childNode = node.body[i];
const result = this.processNode(childNode, blockScope);
if (result instanceof FlowStopper) {
if (result instanceof Return) {
returnValue = result;
}
break;
} else if (result instanceof Debugger) {
// do nothing
} else {
returnValue = result;
}
}
return returnValue;
}
static processIfStatement(node, scope) {
let returnValue;
const test = this.processNode(node.test, scope);
if (test) {
returnValue = this.processNode(node.consequent, scope);
} else if (node.alternate) {
returnValue = this.processNode(node.alternate, scope);
}
return returnValue;
}
static processLiteral(node) {
return node.value;
}
static processIdentifier(node, scope) {
let returnValue;
if (node.returnName) {
returnValue = node.name;
} else {
returnValue = scope.getValue(node.name);
}
return returnValue;
}
/**
*
* @param {*} expression
* @param {Scope} scope
* @returns
*/
static getMemberExpressionObject(expression, scope) {
let returnValue;
switch (expression.object.type) {
case esprima.Syntax.Identifier: {
returnValue = scope.getValue(expression.object.name);
break;
}
case esprima.Syntax.CallExpression:
case esprima.Syntax.MemberExpression: {
const object = this.processNode(expression.object, scope);
returnValue = object;
break;
}
default:
throw new SyntaxError(`Unexpected member expression object type: ${expression.object.type}`);
}
return returnValue;
}
static processMemberExpression(node, scope) {
let returnValue;
const object = this.getMemberExpressionObject(node, scope);
if (object == null && node.optional) {
returnValue = new ChainIsNullish();
} else if (object != null || (object == null && !node.optional)) {
node.property.returnName = !node.computed;
const propertyName = this.processNode(node.property, scope);
// if (object[propertyName] == null) {
// console.warn(`Object does not contain this property: ${propertyName}`);
// }
returnValue = object[propertyName];
}
return returnValue;
}
static doBinaryExpression(node, func, scope) {
return func(this.processNode(node.left, scope), this.processNode(node.right, scope));
}
static add(left, right) {
return left + right;
}
static subtract(left, right) {
return left - right;
}
static multiply(left, right) {
return left * right;
}
static divide(left, right) {
return left / right;
}
static mod(left, right) {
return left % right;
}
static power(left, right) {
return left ** right;
}
static processBinaryExpression(node, scope) {
let returnValue;
const process = operation => this.doBinaryExpression(node, operation, scope);
switch (node.operator) {
case '+':
returnValue = process(this.add);
break;
case '-':
returnValue = process(this.subtract);
break;
case '*':
returnValue = process(this.multiply);
break;
case '/':
returnValue = process(this.divide);
break;
case '%':
returnValue = process(this.mod);
break;
case '**':
returnValue = process(this.power);
break;
case '>':
returnValue = process((left, right) => left > right);
break;
case '<':
returnValue = process((left, right) => left < right);
break;
case '==':
returnValue = process((left, right) => left == right);
break;
case '===':
returnValue = process((left, right) => left === right);
break;
case '>=':
returnValue = process((left, right) => left >= right);
break;
case '<=':
returnValue = process((left, right) => left <= right);
break;
case '!=':
returnValue = process((left, right) => left != right);
break;
case '!==':
returnValue = process((left, right) => left !== right);
break;
case '^':
returnValue = process(this.bitwiseXOR);
break;
case '|':
returnValue = process(this.bitwiseOR);
break;
case '&':
returnValue = process(this.bitwiseAND);
break;
case '>>':
returnValue = process(this.bitwiseRightShift);
break;
case '<<':
returnValue = process(this.bitwiseLeftShift);
break;
case '>>>':
returnValue = process(this.bitwiseUnsignedRightShift);
break;
default:
throw new SyntaxError(`Unexpected binary expression operator: ${node.operator}`);
}
return returnValue;
}
static processVariableDeclaration(node, scope) {
switch (node.kind) {
case 'let':
case 'const':
case 'var':
node.declarations.forEach(declaration => {
declaration.kind = node.kind;
this.processNode(declaration, scope);
});
break;
default:
throw new SyntaxError(`Unexpected variable declaration kind: ${node.type}`);
}
// I believe declarations always return undefined
}
/**
*
* @param {*} node
* @param {Scope} scope
*/
static processVariableDeclarator(node, scope) {
switch (node.id.type) {
case esprima.Syntax.Identifier: {
node.id.returnName = true;
const name = this.processNode(node.id, scope);
const value = node.init ? this.processNode(node.init, scope) : undefined;
let declarationType;
switch (node.kind) {
case 'let':
declarationType = VariableType.Let;
break;
case 'const':
declarationType = VariableType.Const;
break;
case 'var':
declarationType = VariableType.Var;
break;
default:
throw new TypeError(`Unexpected variable declaration kind: ${node.kind}`);
}
scope.declare(declarationType, name, value);
break;
}
case esprima.Syntax.ObjectPattern: {
const object = this.processNode(node.init, scope);
node.id.properties.forEach(property => {
property.key.returnName = true;
const name = this.processNode(property.key, scope);
property.value.returnName = true;
const valueName = this.processNode(property.value, scope);
const value = object[valueName];
let declarationType;
switch (node.kind) {
case 'let':
declarationType = VariableType.Let;
break;
case 'const':
declarationType = VariableType.Const;
break;
case 'var':
declarationType = VariableType.Var;
break;
default:
throw new TypeError(`Unexpected variable declaration kind: ${node.kind}`);
}
scope.declare(declarationType, name, value);
});
break;
}
default:
throw new SyntaxError(`Unexpected variable declarator id type: ${node.id.type}`);
}
}
/**
*
* @param {*} node
* @param {Scope} scope
* @returns
*/
static processCallExpression(node, scope) {
// TODO: This code doesn't pass the sniff test. Need to work on it.
const { callee } = node;
let methodToCall;
let calleeObject;
let returnValue;
switch (callee.type) {
case esprima.Syntax.MemberExpression: {
calleeObject = this.processNode(callee.object, scope);
if (calleeObject == null) {
if (callee.optional) {
returnValue = new ChainIsNullish();
} else {
throw new SyntaxError('Callee object not found in call expression.');
}
} else if (calleeObject instanceof ChainIsNullish) {
returnValue = new ChainIsNullish();
} else {
methodToCall = calleeObject[callee.property.name];
}
break;
}
case esprima.Syntax.Identifier:
methodToCall = scope.getValue(callee.name);
break;
default:
throw new SyntaxError(`Unexpected callee type in call expression: ${callee.type}`);
}
if (!(returnValue instanceof ChainIsNullish)) {
if (methodToCall == null) {
if (node.optional) {
returnValue = new ChainIsNullish();
} else {
let methodName;
switch (callee.type) {
case esprima.Syntax.Identifier:
methodName = callee.name;
break;
case esprima.Syntax.MemberExpression:
callee.property.returnName = true;
methodName = this.processNode(callee.property);
break;
default:
}
throw new SyntaxError(`Method not found: ${methodName}`);
}
} else {
const args = node.arguments.map(arg => this.processNode(arg, scope));
// if (!methodToCall) debugger;
returnValue = methodToCall.call(calleeObject, ...args);
}
}
return returnValue;
}
static doAssignmentExpression(node, func, scope) {
let returnValue;
let leftValue;
switch (node.left.type) {
case esprima.Syntax.Identifier: {
leftValue = scope.getValue(node.left.name);
returnValue = this.setScopeValue(node.left, func(leftValue, this.processNode(node.right, scope)), scope);
break;
}
case esprima.Syntax.MemberExpression: {
const object = this.getMemberExpressionObject(node.left, scope);
const propertyName = this.processNode(node.left.property, scope);
leftValue = object[propertyName];
returnValue = (object[propertyName] = func(leftValue, this.processNode(node.right, scope)));
break;
}
default:
throw new SyntaxError(`Unexpected type on left side of assignment expression: ${node.left.type}`);
}
return returnValue;
}
static nullishCoalesce(left, right) {
return left ?? right;
}
static or(left, right) {
return left || right;
}
static and(left, right) {
return left && right;
}
static bitwiseAND(left, right) {
return left & right;
}
static bitwiseOR(left, right) {
return left | right;
}
static bitwiseXOR(left, right) {
return left ^ right;
}
static bitwiseLeftShift(left, right) {
return left << right;
}
static bitwiseRightShift(left, right) {
return left >> right;
}
static bitwiseUnsignedRightShift(left, right) {
return left >>> right;
}
static processAssigmentExpression(node, scope) {
let returnValue;
const assign = operation => this.doAssignmentExpression(node, operation, scope);
switch (node.operator) {
case '=':
returnValue = this.setScopeValue(node.left, this.processNode(node.right, scope), scope);
break;
case '+=':
returnValue = assign(this.add);
break;
case '-=':
returnValue = assign(this.subtract);
break;
case '*=':
returnValue = assign(this.multiply);
break;
case '/=':
returnValue = assign(this.divide);
break;
case '%=':
returnValue = assign(this.mod);
break;
case '**=':
returnValue = assign(this.power);
break;
case '??=':
returnValue = assign(this.nullishCoalesce);
break;
case '||=':
returnValue = assign(this.or);
break;
case '&&=':
returnValue = assign(this.and);
break;
case '<<=':
returnValue = assign(this.bitwiseLeftShift);
break;
case '>>=':
returnValue = assign(this.bitwiseRightShift);
break;
case '>>>=':
returnValue = assign(this.bitwiseUnsignedRightShift);
break;
case '&=':
returnValue = assign(this.bitwiseAND);
break;
case '|=':
returnValue = assign(this.bitwiseOR);
break;
case '^=':
returnValue = assign(this.bitwiseXOR);
break;
default:
throw new SyntaxError(`Unexpected assigment expression operator: ${node.operator}`);
}
return returnValue;
}
}
return { compile: esprima.parseScript, execute: Interpreter.execute.bind(Interpreter) };
})();
