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    {&quot;ScriptPreparationCode&quot;:&quot;var jsObj = {\r\n  boolY: true,\r\n  boolX: false,\r\n  str: \u0027string\u0027,\r\n  num: 123,\r\n  obj: {},\r\n  arr: [{ name: \u0027Alex\u0027, type: \u0027manager\u0027 }, { name: \u0027Bob\u0027, type: \u0027ceo\u0027 }],\r\n  undef: undefined,\r\n  null: null,\r\n};\r\n\r\nvar json = JSON.stringify(jsObj, null, 2);\r\n\r\nconsole.log({ json: json });\r\n\r\nfunction parseJSON_eval(json) {\r\n  return eval(\u0060(${json})\u0060);\r\n}\r\n\r\nfunction parseJSON_ES4(json) {\r\n  // Higher-order function to be used for detecting type\r\n  var firstAndLastChars = function firstAndLastChars(first, last) {\r\n    return function(str) {\r\n      return str[0] === first \u0026\u0026 str[str.length - 1] === last;\r\n    };\r\n  };\r\n\r\n  var isArray = firstAndLastChars(\u0027[\u0027, \u0027]\u0027);\r\n  var isObj = firstAndLastChars(\u0027{\u0027, \u0027}\u0027);\r\n  var hasDoubleQuotes = firstAndLastChars(\u0027\u0022\u0027, \u0027\u0022\u0027);\r\n  var hasSingleQuotes = firstAndLastChars(\u0022\u0027\u0022, \u0022\u0027\u0022);\r\n\r\n  var isNumber = function isNumber(str) {\r\n    return \u002Bstr \u002B \u0027\u0027 === str;\r\n  };\r\n\r\n  var isString = function isString(str) {\r\n    str = str.trim();\r\n    return (hasSingleQuotes(str) || hasDoubleQuotes(str)) \u0026\u0026 str[str.length - 2] !== \u0027\\\\\u0027;\r\n  };\r\n\r\n  var removeFirstAndLastChar = function removeFirstAndLastChar(str) {\r\n    str = str.trim();\r\n    return str.substring(1).slice(0, str.length - 2) || \u0027\u0027;\r\n  }; // Higher-order function to be used for splitting string\r\n\r\n  var splitByChar = function splitByChar(base_char) {\r\n    return function(str) {\r\n      var result = [];\r\n      var double_string_open = false;\r\n      var single_string_open = false;\r\n      var array_open = false;\r\n      var object_open = false;\r\n      var array_bracket_count = 0;\r\n      var object_bracket_count = 0;\r\n      var curr_str = \u0027\u0027;\r\n      var prev_ch = \u0027\u0027;\r\n\r\n      for (var i = 0; i \u003C str.length; i \u002B= 1) {\r\n        var ch = str[i];\r\n\r\n        if (ch === \u0027\u0022\u0027) {\r\n          double_string_open = !double_string_open;\r\n        }\r\n\r\n        if (ch === \u0022\u0027\u0022) {\r\n          single_string_open = !single_string_open;\r\n        }\r\n\r\n        if (ch === \u0027[\u0027) {\r\n          array_bracket_count \u002B= 1;\r\n          array_open = true;\r\n        }\r\n\r\n        if (ch === \u0027]\u0027) {\r\n          array_bracket_count -= 1;\r\n\r\n          if (array_bracket_count === 0) {\r\n            array_open = false;\r\n          }\r\n        }\r\n\r\n        if (ch === \u0027{\u0027) {\r\n          object_bracket_count \u002B= 1;\r\n          object_open = true;\r\n        }\r\n\r\n        if (ch === \u0027}\u0027) {\r\n          object_bracket_count -= 1;\r\n\r\n          if (object_bracket_count === 0) {\r\n            object_open = false;\r\n          }\r\n        }\r\n\r\n        if (ch === base_char \u0026\u0026 !double_string_open \u0026\u0026 !single_string_open \u0026\u0026 !array_open \u0026\u0026 !object_open) {\r\n          if (curr_str !== \u0027\u0027) result.push(curr_str.trim());\r\n          curr_str = \u0027\u0027;\r\n          prev_ch = \u0027\u0027;\r\n        } else {\r\n          curr_str \u002B= ch;\r\n          prev_ch = ch;\r\n        }\r\n      }\r\n\r\n      if (curr_str !== \u0027\u0027) result.push(curr_str.trim());\r\n      return result;\r\n    };\r\n  };\r\n\r\n  var separeateStringByCommas = splitByChar(\u0027,\u0027);\r\n  var separeateStringByColons = splitByChar(\u0027:\u0027);\r\n\r\n  var parseJSONString = function parseJSONString(str, parent) {\r\n    str = str.trim();\r\n    if (isArray(str)) return separeateStringByCommas(removeFirstAndLastChar(str)).map(parseJSONString);\r\n\r\n    if (isObj(str)) {\r\n      var obj = {};\r\n\r\n      var _obj = separeateStringByCommas(removeFirstAndLastChar(str)); // _obj is an array of strings with \u0027key: value\u0027\r\n\r\n      _obj.forEach(function(val, i) {\r\n        var key_val_pair = separeateStringByColons(val); // split into key, value\r\n\r\n        if (key_val_pair.length === 2) {\r\n          obj[parseJSONString(key_val_pair[0])] = parseJSONString(key_val_pair[1]);\r\n        }\r\n      });\r\n\r\n      return obj;\r\n    }\r\n\r\n    if (isString(str)) return removeFirstAndLastChar(str).replace(/([\\\\]{1})([\\\\\\\u0022]{1})/g, \u0027$2\u0027);\r\n    if (isNumber(str)) return \u002Bstr;\r\n    if (str === \u0027null\u0027) return null;\r\n    if (str === \u0027false\u0027) return false;\r\n    if (str === \u0027true\u0027) return true;\r\n    if (str === \u0027undefined\u0027) return undefined;\r\n    throw new SyntaxError(\u0027Unexpected end of input\u0027);\r\n  };\r\n\r\n  return parseJSONString(json);\r\n}\r\n\r\nfunction parseJSON_ES6(json) {\r\n  // Higher-order function to be used for detecting type\r\n  const firstAndLastChars = function(first, last) {\r\n    return str =\u003E str[0] === first \u0026\u0026 str[str.length - 1] === last;\r\n  };\r\n  const isArray = firstAndLastChars(\u0027[\u0027, \u0027]\u0027);\r\n  const isObj = firstAndLastChars(\u0027{\u0027, \u0027}\u0027);\r\n  const hasDoubleQuotes = firstAndLastChars(\u0027\u0022\u0027, \u0027\u0022\u0027);\r\n  const hasSingleQuotes = firstAndLastChars(\u0022\u0027\u0022, \u0022\u0027\u0022);\r\n  const isNumber = str =\u003E \u002Bstr \u002B \u0027\u0027 === str;\r\n  const isString = function(str) {\r\n    str = str.trim();\r\n    return (hasSingleQuotes(str) || hasDoubleQuotes(str)) \u0026\u0026 str[str.length - 2] !== \u0027\\\\\u0027;\r\n  };\r\n  const removeFirstAndLastChar = function(str) {\r\n    str = str.trim();\r\n    return str.substring(1).slice(0, str.length - 2) || \u0027\u0027;\r\n  };\r\n  // Higher-order function to be used for splitting string\r\n  const splitByChar = function(base_char) {\r\n    return function(str) {\r\n      var result = [];\r\n      var double_string_open = false;\r\n      var single_string_open = false;\r\n      var array_open = false;\r\n      var object_open = false;\r\n      var array_bracket_count = 0;\r\n      var object_bracket_count = 0;\r\n      var curr_str = \u0027\u0027;\r\n      var prev_ch = \u0027\u0027;\r\n      for (var i = 0; i \u003C str.length; i \u002B= 1) {\r\n        var ch = str[i];\r\n        if (ch === \u0027\u0022\u0027) {\r\n          double_string_open = !double_string_open;\r\n        }\r\n        if (ch === \u0022\u0027\u0022) {\r\n          single_string_open = !single_string_open;\r\n        }\r\n        if (ch === \u0027[\u0027) {\r\n          array_bracket_count \u002B= 1;\r\n          array_open = true;\r\n        }\r\n        if (ch === \u0027]\u0027) {\r\n          array_bracket_count -= 1;\r\n          if (array_bracket_count === 0) {\r\n            array_open = false;\r\n          }\r\n        }\r\n        if (ch === \u0027{\u0027) {\r\n          object_bracket_count \u002B= 1;\r\n          object_open = true;\r\n        }\r\n        if (ch === \u0027}\u0027) {\r\n          object_bracket_count -= 1;\r\n          if (object_bracket_count === 0) {\r\n            object_open = false;\r\n          }\r\n        }\r\n        if (ch === base_char \u0026\u0026 !double_string_open \u0026\u0026 !single_string_open \u0026\u0026 !array_open \u0026\u0026 !object_open) {\r\n          if (curr_str !== \u0027\u0027) result.push(curr_str.trim());\r\n          curr_str = \u0027\u0027;\r\n          prev_ch = \u0027\u0027;\r\n        } else {\r\n          curr_str \u002B= ch;\r\n          prev_ch = ch;\r\n        }\r\n      }\r\n      if (curr_str !== \u0027\u0027) result.push(curr_str.trim());\r\n      return result;\r\n    };\r\n  };\r\n  const separeateStringByCommas = splitByChar(\u0027,\u0027);\r\n  const separeateStringByColons = splitByChar(\u0027:\u0027);\r\n  const parseJSONString = function(str, parent) {\r\n    str = str.trim();\r\n    if (isArray(str)) return separeateStringByCommas(removeFirstAndLastChar(str)).map(parseJSONString);\r\n    if (isObj(str)) {\r\n      var obj = {};\r\n      var _obj = separeateStringByCommas(removeFirstAndLastChar(str));\r\n      // _obj is an array of strings with \u0027key: value\u0027\r\n      _obj.forEach(function(val, i) {\r\n        var key_val_pair = separeateStringByColons(val); // split into key, value\r\n        if (key_val_pair.length === 2) {\r\n          obj[parseJSONString(key_val_pair[0])] = parseJSONString(key_val_pair[1]);\r\n        }\r\n      });\r\n      return obj;\r\n    }\r\n    if (isString(str)) return removeFirstAndLastChar(str).replace(/([\\\\]{1})([\\\\\\\u0022]{1})/g, \u0027$2\u0027);\r\n    if (isNumber(str)) return \u002Bstr;\r\n    if (str === \u0027null\u0027) return null;\r\n    if (str === \u0027false\u0027) return false;\r\n    if (str === \u0027true\u0027) return true;\r\n    if (str === \u0027undefined\u0027) return undefined;\r\n    throw new SyntaxError(\u0027Unexpected end of input\u0027);\r\n  };\r\n  return parseJSONString(json);\r\n}\r\n&quot;,&quot;TestCases&quot;:[{&quot;Name&quot;:&quot;eval&quot;,&quot;Code&quot;:&quot;parseJSON_eval(json)&quot;,&quot;IsDeferred&quot;:false},{&quot;Name&quot;:&quot;ES4 (old JS, Siebel eScript)&quot;,&quot;Code&quot;:&quot;parseJSON_ES4(json)&quot;,&quot;IsDeferred&quot;:false},{&quot;Name&quot;:&quot;ES6 (new JS)&quot;,&quot;Code&quot;:&quot;parseJSON_ES6(json)&quot;,&quot;IsDeferred&quot;:false}]}
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