QuoteJSONString.jsā¢1.42 kB
'use strict';
var $TypeError = require('es-errors/type');
var callBound = require('call-bound');
var forEach = require('../helpers/forEach');
var isLeadingSurrogate = require('../helpers/isLeadingSurrogate');
var isTrailingSurrogate = require('../helpers/isTrailingSurrogate');
var $charCodeAt = callBound('String.prototype.charCodeAt');
var $strSplit = callBound('String.prototype.split');
var StringToCodePoints = require('./StringToCodePoints');
var UnicodeEscape = require('./UnicodeEscape');
var UTF16EncodeCodePoint = require('./UTF16EncodeCodePoint');
var hasOwn = require('hasown');
// https://262.ecma-international.org/12.0/#sec-quotejsonstring
var escapes = {
'\u0008': '\\b',
'\u0009': '\\t',
'\u000A': '\\n',
'\u000C': '\\f',
'\u000D': '\\r',
'\u0022': '\\"',
'\u005c': '\\\\'
};
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(StringToCodePoints(value), ''), function (C) {
if (hasOwn(escapes, C)) {
product += escapes[C];
} else {
var cCharCode = $charCodeAt(C, 0);
if (cCharCode < 0x20 || isLeadingSurrogate(cCharCode) || isTrailingSurrogate(cCharCode)) {
product += UnicodeEscape(C);
} else {
product += UTF16EncodeCodePoint(cCharCode);
}
}
});
}
product += '"';
return product;
};