"use strict";

// @ts-nocheck

var g = typeof globalThis !== 'undefined' ? globalThis : global;
var crypto = g.crypto || {};
if (typeof crypto.getRandomValues !== 'function') {
  var nodeCrypto = require('crypto');
  crypto.getRandomValues = function (typedArray) {
    var bytes = nodeCrypto.randomBytes(typedArray.byteLength);
    new Uint8Array(typedArray.buffer, typedArray.byteOffset, typedArray.byteLength).set(bytes);
    return typedArray;
  };
}
/*
Copyright (c) 2014, Yahoo! Inc. All rights reserved.
Copyrights licensed under the New BSD License.
See the accompanying LICENSE file for terms.
*/

'use strict';

// Generate an internal UID to make the regexp pattern harder to guess.
var UID_LENGTH = 16;
var UID = generateUID();
var PLACE_HOLDER_REGEXP = new RegExp('(\\\\)?"@__(F|R|D|M|S|A|U|I|B|L)-' + UID + '-(\\d+)__@"', 'g');
var IS_NATIVE_CODE_REGEXP = /\{\s*\[native code\]\s*\}/g;
var IS_PURE_FUNCTION = /function.*?\(/;
var IS_ARROW_FUNCTION = /.*?=>.*?/;
var UNSAFE_CHARS_REGEXP = /[<>\/\u2028\u2029]/g;
// Regex to match </script> and variations (case-insensitive) for XSS protection
// Matches </script followed by optional whitespace/attributes and >
var SCRIPT_CLOSE_REGEXP = /<\/script[^>]*>/gi;
var RESERVED_SYMBOLS = ['*', 'async'];

// Mapping of unsafe HTML and invalid JavaScript line terminator chars to their
// Unicode char counterparts which are safe to use in JavaScript strings.
var ESCAPED_CHARS = {
  '<': '\\u003C',
  '>': '\\u003E',
  '/': '\\u002F',
  '\u2028': '\\u2028',
  '\u2029': '\\u2029'
};
function escapeUnsafeChars(unsafeChar) {
  return ESCAPED_CHARS[unsafeChar];
}

// Escape function body for XSS protection while preserving arrow function syntax
function escapeFunctionBody(str) {
  // Escape </script> sequences and variations (case-insensitive) - the main XSS risk
  // Matches </script followed by optional whitespace/attributes and >
  // This must be done first before other replacements
  str = str.replace(SCRIPT_CLOSE_REGEXP, function (match) {
    // Escape all <, /, and > characters in the closing script tag
    return match.replace(/</g, '\\u003C').replace(/\//g, '\\u002F').replace(/>/g, '\\u003E');
  });
  // Escape line terminators (these are always unsafe)
  str = str.replace(/\u2028/g, '\\u2028');
  str = str.replace(/\u2029/g, '\\u2029');
  return str;
}
function generateUID() {
  var bytes = crypto.getRandomValues(new Uint8Array(UID_LENGTH));
  var result = '';
  for (var i = 0; i < UID_LENGTH; ++i) {
    result += bytes[i].toString(16);
  }
  return result;
}
function deleteFunctions(obj) {
  var functionKeys = [];
  for (var key in obj) {
    if (typeof obj[key] === "function") {
      functionKeys.push(key);
    }
  }
  for (var i = 0; i < functionKeys.length; i++) {
    delete obj[functionKeys[i]];
  }
}
module.exports = function serialize(obj, options) {
  options || (options = {});

  // Backwards-compatibility for `space` as the second argument.
  if (typeof options === 'number' || typeof options === 'string') {
    options = {
      space: options
    };
  }
  var functions = [];
  var regexps = [];
  var dates = [];
  var maps = [];
  var sets = [];
  var arrays = [];
  var undefs = [];
  var infinities = [];
  var bigInts = [];
  var urls = [];

  // Returns placeholders for functions and regexps (identified by index)
  // which are later replaced by their string representation.
  function replacer(key, value) {
    // For nested function
    if (options.ignoreFunction) {
      deleteFunctions(value);
    }
    if (!value && value !== undefined && value !== BigInt(0)) {
      return value;
    }

    // If the value is an object w/ a toJSON method, toJSON is called before
    // the replacer runs, so we use this[key] to get the non-toJSONed value.
    var origValue = this[key];
    var type = typeof origValue;
    if (type === 'object') {
      if (origValue instanceof RegExp) {
        return '@__R-' + UID + '-' + (regexps.push(origValue) - 1) + '__@';
      }
      if (origValue instanceof Date) {
        return '@__D-' + UID + '-' + (dates.push(origValue) - 1) + '__@';
      }
      if (origValue instanceof Map) {
        return '@__M-' + UID + '-' + (maps.push(origValue) - 1) + '__@';
      }
      if (origValue instanceof Set) {
        return '@__S-' + UID + '-' + (sets.push(origValue) - 1) + '__@';
      }
      if (Array.isArray(origValue)) {
        var isSparse = Object.keys(origValue).length !== origValue.length;
        if (isSparse) {
          return '@__A-' + UID + '-' + (arrays.push(origValue) - 1) + '__@';
        }
      }
      if (origValue instanceof URL) {
        return '@__L-' + UID + '-' + (urls.push(origValue) - 1) + '__@';
      }
    }
    if (type === 'function') {
      return '@__F-' + UID + '-' + (functions.push(origValue) - 1) + '__@';
    }
    if (type === 'undefined') {
      return '@__U-' + UID + '-' + (undefs.push(origValue) - 1) + '__@';
    }
    if (type === 'number' && !isNaN(origValue) && !isFinite(origValue)) {
      return '@__I-' + UID + '-' + (infinities.push(origValue) - 1) + '__@';
    }
    if (type === 'bigint') {
      return '@__B-' + UID + '-' + (bigInts.push(origValue) - 1) + '__@';
    }
    return value;
  }
  function serializeFunc(fn, options) {
    var serializedFn = fn.toString();
    if (IS_NATIVE_CODE_REGEXP.test(serializedFn)) {
      throw new TypeError('Serializing native function: ' + fn.name);
    }

    // Escape unsafe HTML characters in function body for XSS protection
    // This must preserve arrow function syntax (=>) while escaping </script>
    if (options && options.unsafe !== true) {
      serializedFn = escapeFunctionBody(serializedFn);
    }

    // pure functions, example: {key: function() {}}
    if (IS_PURE_FUNCTION.test(serializedFn)) {
      return serializedFn;
    }

    // arrow functions, example: arg1 => arg1+5
    if (IS_ARROW_FUNCTION.test(serializedFn)) {
      return serializedFn;
    }
    var argsStartsAt = serializedFn.indexOf('(');
    var def = serializedFn.substr(0, argsStartsAt).trim().split(' ').filter(function (val) {
      return val.length > 0;
    });
    var nonReservedSymbols = def.filter(function (val) {
      return RESERVED_SYMBOLS.indexOf(val) === -1;
    });

    // enhanced literal objects, example: {key() {}}
    if (nonReservedSymbols.length > 0) {
      return (def.indexOf('async') > -1 ? 'async ' : '') + 'function' + (def.join('').indexOf('*') > -1 ? '*' : '') + serializedFn.substr(argsStartsAt);
    }

    // arrow functions
    return serializedFn;
  }

  // Check if the parameter is function
  if (options.ignoreFunction && typeof obj === "function") {
    obj = undefined;
  }
  // Protects against `JSON.stringify()` returning `undefined`, by serializing
  // to the literal string: "undefined".
  if (obj === undefined) {
    return String(obj);
  }
  var str;

  // Creates a JSON string representation of the value.
  // NOTE: Node 0.12 goes into slow mode with extra JSON.stringify() args.
  if (options.isJSON && !options.space) {
    str = JSON.stringify(obj);
  } else {
    str = JSON.stringify(obj, options.isJSON ? null : replacer, options.space);
  }

  // Protects against `JSON.stringify()` returning `undefined`, by serializing
  // to the literal string: "undefined".
  if (typeof str !== 'string') {
    return String(str);
  }

  // Replace unsafe HTML and invalid JavaScript line terminator chars with
  // their safe Unicode char counterpart. This _must_ happen before the
  // regexps and functions are serialized and added back to the string.
  if (options.unsafe !== true) {
    str = str.replace(UNSAFE_CHARS_REGEXP, escapeUnsafeChars);
  }
  if (functions.length === 0 && regexps.length === 0 && dates.length === 0 && maps.length === 0 && sets.length === 0 && arrays.length === 0 && undefs.length === 0 && infinities.length === 0 && bigInts.length === 0 && urls.length === 0) {
    return str;
  }

  // Replaces all occurrences of function, regexp, date, map and set placeholders in the
  // JSON string with their string representations. If the original value can
  // not be found, then `undefined` is used.
  return str.replace(PLACE_HOLDER_REGEXP, function (match, backSlash, type, valueIndex) {
    // The placeholder may not be preceded by a backslash. This is to prevent
    // replacing things like `"a\"@__R-<UID>-0__@"` and thus outputting
    // invalid JS.
    if (backSlash) {
      return match;
    }
    if (type === 'D') {
      // Validate ISO string format to prevent code injection via spoofed toISOString()
      var isoStr = String(dates[valueIndex].toISOString());
      if (!/^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(\.\d{3})?Z$/.test(isoStr)) {
        throw new TypeError('Invalid Date ISO string');
      }
      return "new Date(\"" + isoStr + "\")";
    }
    if (type === 'R') {
      // Sanitize flags to prevent code injection (only allow valid RegExp flag characters)
      var flags = String(regexps[valueIndex].flags).replace(/[^gimsuydv]/g, '');
      return "new RegExp(" + serialize(regexps[valueIndex].source) + ", \"" + flags + "\")";
    }
    if (type === 'M') {
      return "new Map(" + serialize(Array.from(maps[valueIndex].entries()), options) + ")";
    }
    if (type === 'S') {
      return "new Set(" + serialize(Array.from(sets[valueIndex].values()), options) + ")";
    }
    if (type === 'A') {
      return "Array.prototype.slice.call(" + serialize(Object.assign({
        length: arrays[valueIndex].length
      }, arrays[valueIndex]), options) + ")";
    }
    if (type === 'U') {
      return 'undefined';
    }
    if (type === 'I') {
      return infinities[valueIndex];
    }
    if (type === 'B') {
      return "BigInt(\"" + bigInts[valueIndex] + "\")";
    }
    if (type === 'L') {
      return "new URL(" + serialize(urls[valueIndex].toString(), options) + ")";
    }
    var fn = functions[valueIndex];
    return serializeFunc(fn, options);
  });
};