Constnium/node_modules/es-abstract/2015/QuoteJSONString.js
2022-06-23 02:27:43 +02:00

52 lines
1.4 KiB
JavaScript

'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://ecma-international.org/ecma-262/6.0/#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;
};