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- 'use strict';
- var $ = require('../internals/export');
- var FREEZING = require('../internals/freezing');
- var NATIVE_RAW_JSON = require('../internals/native-raw-json');
- var getBuiltIn = require('../internals/get-built-in');
- var uncurryThis = require('../internals/function-uncurry-this');
- var toString = require('../internals/to-string');
- var createProperty = require('../internals/create-property');
- var setInternalState = require('../internals/internal-state').set;
- var $SyntaxError = SyntaxError;
- var parse = getBuiltIn('JSON', 'parse');
- var create = getBuiltIn('Object', 'create');
- var freeze = getBuiltIn('Object', 'freeze');
- var at = uncurryThis(''.charAt);
- var ERROR_MESSAGE = 'Unacceptable as raw JSON';
- var isWhitespace = function (it) {
- return it === ' ' || it === '\t' || it === '\n' || it === '\r';
- };
- // `JSON.rawJSON` method
- // https://tc39.es/proposal-json-parse-with-source/#sec-json.rawjson
- // https://github.com/tc39/proposal-json-parse-with-source
- $({ target: 'JSON', stat: true, forced: !NATIVE_RAW_JSON }, {
- rawJSON: function rawJSON(text) {
- var jsonString = toString(text);
- if (jsonString === '' || isWhitespace(at(jsonString, 0)) || isWhitespace(at(jsonString, jsonString.length - 1))) {
- throw new $SyntaxError(ERROR_MESSAGE);
- }
- var parsed = parse(jsonString);
- if (typeof parsed == 'object' && parsed !== null) throw new $SyntaxError(ERROR_MESSAGE);
- var obj = create(null);
- setInternalState(obj, { type: 'RawJSON' });
- createProperty(obj, 'rawJSON', jsonString);
- return FREEZING ? freeze(obj) : obj;
- }
- });
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