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- 'use strict';
- var GetIntrinsic = require('get-intrinsic');
- var $TypeError = GetIntrinsic('%TypeError%');
- var callBound = require('call-bind/callBound');
- var forEach = require('../helpers/forEach');
- var $charCodeAt = callBound('String.prototype.charCodeAt');
- var $numberToString = callBound('Number.prototype.toString');
- var $toLowerCase = callBound('String.prototype.toLowerCase');
- var $strSlice = callBound('String.prototype.slice');
- var $strSplit = callBound('String.prototype.split');
- var Type = require('./Type');
- // https://262.ecma-international.org/6.0/#sec-quotejsonstring
- var escapes = {
- '\u0008': 'b',
- '\u000C': 'f',
- '\u000A': 'n',
- '\u000D': 'r',
- '\u0009': 't'
- };
- module.exports = function QuoteJSONString(value) {
- if (Type(value) !== 'String') {
- throw new $TypeError('Assertion failed: `value` must be a String');
- }
- var product = '"';
- if (value) {
- forEach($strSplit(value), function (C) {
- if (C === '"' || C === '\\') {
- product += '\u005C' + C;
- } else if (C === '\u0008' || C === '\u000C' || C === '\u000A' || C === '\u000D' || C === '\u0009') {
- var abbrev = escapes[C];
- product += '\u005C' + abbrev;
- } else {
- var cCharCode = $charCodeAt(C, 0);
- if (cCharCode < 0x20) {
- product += '\u005Cu' + $toLowerCase($strSlice('0000' + $numberToString(cCharCode, 16), -4));
- } else {
- product += C;
- }
- }
- });
- }
- product += '"';
- return product;
- };
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