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ESTreeProcessor

Compiles a string containing Javascript to an ESTree object and/or executes an ESTree object in Javascript

Dette script bør ikke installeres direkte. Det er et bibliotek, som andre scripts kan inkludere med metadirektivet // @require https://update.greasyfork.org/scripts/506614/1441300/ESTreeProcessor.js

Skaber
mapomatic og WazeDev
Version
2.0.1
Oprettet
03.09.2024
Opdateret
04.09.2024
Licens
GNU GPLv3

This library is intended to be used by userscripts that need to execute arbitrary JS code in string form, but are restricted by CSP unsafe-eval limitations.

This library uses esprima-next (ES2022) behind the scenes to compile ESTree objects.

Example:

var tree = ESTreeProcessor.compile('function test(b) { return b + a; } test(2);');
// tree contains an ESTree object

// Access to environment variables in the execute function is limited to what you pass in the second argument.
// This makes it safer to execute arbitrary strings, but the strings MUST be controlled at their source 
// and/or processed and verified in code to be truly safe.
var result = ESTreeProcessor.execute(tree, { a: 3 });
console.log(result.output);
// logs '5' to the console