source: imaps-frontend/node_modules/es-abstract/2016/QuoteJSONString.js@ d565449

'use strict';

var $TypeError = require('es-errors/type');

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');

// 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 (typeof 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;
};