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This is NodeJS's util.inspect ported to the browser for usability in other scripts.
Este script no debería instalarse directamente. Es una biblioteca que utilizan otros scripts mediante la meta-directiva de inclusión // @require https://update.greasyfork.org/scripts/450595/1088649/UtilInspectForBrowser.js
// Minified code is scary, so here is the full code for the `inspect` function.
// Please note: Some function names etc. may seem odd, but the file is made realitivly small because of this. This module comes straight from NodeJS and was *compiled* for the browser.
// This means I did not write this code myself (A compiler did!), it was simply compiled to work for the browser.
window.inspect = (() => {
function e(e, o) {
var c = {
seen: [],
stylize: t
};
return arguments.length >= 3 && (c.depth = arguments[2]), arguments.length >= 4 && (c.colors = arguments[3]), n(o) ? c.showHidden = o : o && b(c, o), r(c.showHidden) && (c.showHidden = !1), r(c.depth) && (c.depth = 2), r(c.colors) && (c.colors = !1), r(c.customInspect) && (c.customInspect = !0), c.colors && (c.stylize = i), d(c, e, c.depth)
}
function t(e, t) {
return e
}
function n(e) {
return "boolean" == typeof e
}
function r(e) {
return void 0 === e
}
function i(t, n) {
var r = e.styles[n];
return r ? "[" + e.colors[r][0] + "m" + t + "[" + e.colors[r][1] + "m" : t
}
function o(e) {
return "function" == typeof e
}
function c(e) {
return "string" == typeof e
}
function u(e) {
return null === e
}
function l(e, t) {
return Object.prototype.hasOwnProperty.call(e, t)
}
function s(e) {
return a(e) && "[object RegExp]" === y(e)
}
function a(e) {
return "object" == typeof e && null !== e
}
function p(e) {
return a(e) && ("[object Error]" === y(e) || e instanceof Error)
}
function f(e) {
return a(e) && "[object Date]" === y(e)
}
function y(e) {
return Object.prototype.toString.call(e)
}
function g(e) {
return "[" + Error.prototype.toString.call(e) + "]"
}
function d(t, i, a) {
if (t.customInspect && i && o(i.inspect) && i.inspect !== e && (!i.constructor || i.constructor.prototype !== i)) {
var y = i.inspect(a, t);
return c(y) || (y = d(t, y, a)), y
}
var b = function(e, t) {
if (r(t)) return e.stylize("undefined", "undefined");
if (c(t)) {
var i = "'" + JSON.stringify(t).replace(/^"|"$/g, "").replace(/'/g, "\\'").replace(/\\"/g, '"') + "'";
return e.stylize(i, "string")
}
if (o = t, "number" == typeof o) return e.stylize("" + t, "number");
var o;
if (n(t)) return e.stylize("" + t, "boolean");
if (u(t)) return e.stylize("null", "null")
}(t, i);
if (b) return b;
var m = Object.keys(i),
v = function(e) {
var t = {};
return e.forEach((function(e, n) {
t[e] = !0
})), t
}(m);
try {
t.showHidden && Object.getOwnPropertyNames && (m = Object.getOwnPropertyNames(i))
} catch (e) {}
if (p(i) && (m.indexOf("message") >= 0 || m.indexOf("description") >= 0)) return g(i);
if (0 === m.length) {
if (o(i)) {
var O = i.name ? ": " + i.name : "";
return t.stylize("[Function" + O + "]", "special")
}
if (s(i)) return t.stylize(RegExp.prototype.toString.call(i), "regexp");
if (f(i)) return t.stylize(Date.prototype.toString.call(i), "date");
if (p(i)) return g(i)
}
var z, j = "",
w = !1,
S = ["{", "}"];
(Array.isArray(i) && (w = !0, S = ["[", "]"]), o(i)) && (j = " [Function" + (i.name ? ": " + i.name : "") + "]");
return s(i) && (j = " " + RegExp.prototype.toString.call(i)), f(i) && (j = " " + Date.prototype.toUTCString.call(i)), p(i) && (j = " " + g(i)), 0 !== m.length || w && 0 != i.length ? a < 0 ? s(i) ? t.stylize(RegExp.prototype.toString.call(i), "regexp") : t.stylize("[Object]", "special") : (t.seen.push(i), z = w ? function(e, t, n, r, i) {
for (var o = [], c = 0, u = t.length; c < u; ++c) l(t, String(c)) ? o.push(h(e, t, n, r, String(c), !0)) : o.push("");
return i.forEach((function(i) {
i.match(/^\d+$/) || o.push(h(e, t, n, r, i, !0))
})), o
}(t, i, a, v, m) : m.map((function(e) {
return h(t, i, a, v, e, w)
})), t.seen.pop(), function(e, t, n) {
if (e.reduce((function(e, t) {
return t.indexOf("\n") >= 0 && 0, e + t.replace(/\u001b\[\d\d?m/g, "").length + 1
}), 0) > 60) return n[0] + ("" === t ? "" : t + "\n ") + " " + e.join(",\n ") + " " + n[1];
return n[0] + t + " " + e.join(", ") + " " + n[1]
}(z, j, S)) : S[0] + j + S[1]
}
function h(e, t, n, i, o, c) {
var s, a, p;
p = {
value: void 0
};
try {
p.value = t[o]
} catch (e) {}
try {
Object.getOwnPropertyDescriptor && (p = Object.getOwnPropertyDescriptor(t, o) || p)
} catch (e) {}
if (p.get ? a = p.set ? e.stylize("[Getter/Setter]", "special") : e.stylize("[Getter]", "special") : p.set && (a = e.stylize("[Setter]", "special")), l(i, o) || (s = "[" + o + "]"), a || (e.seen.indexOf(p.value) < 0 ? (a = u(n) ? d(e, p.value, null) : d(e, p.value, n - 1)).indexOf("\n") > -1 && (a = c ? a.split("\n").map((function(e) {
return " " + e
})).join("\n").substr(2) : "\n" + a.split("\n").map((function(e) {
return " " + e
})).join("\n")) : a = e.stylize("[Circular]", "special")), r(s)) {
if (c && o.match(/^\d+$/)) return a;
(s = JSON.stringify("" + o)).match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/) ? (s = s.substr(1, s.length - 2), s = e.stylize(s, "name")) : (s = s.replace(/'/g, "\\'").replace(/\\"/g, '"').replace(/(^"|"$)/g, "'"), s = e.stylize(s, "string"))
}
return s + ": " + a
}
function b(e, t) {
if (!t || !a(t)) return e;
for (var n = Object.keys(t), r = n.length; r--;) e[n[r]] = t[n[r]];
return e
}
return e.colors = {
bold: [1, 22],
italic: [3, 23],
underline: [4, 24],
inverse: [7, 27],
white: [37, 39],
grey: [90, 39],
black: [30, 39],
blue: [34, 39],
cyan: [36, 39],
green: [32, 39],
magenta: [35, 39],
red: [31, 39],
yellow: [33, 39]
}, e.styles = {
special: "cyan",
number: "yellow",
boolean: "yellow",
undefined: "grey",
null: "bold",
string: "green",
date: "magenta",
regexp: "red"
}, e
})();