You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
26 lines
1.0 KiB
26 lines
1.0 KiB
11 months ago
|
'use strict';
|
||
|
|
var $ = require('../internals/export');
|
||
|
|
var uncurryThis = require('../internals/function-uncurry-this');
|
||
|
|
var toString = require('../internals/to-string');
|
||
|
|
var padStart = require('../internals/string-pad').start;
|
||
|
|
var WHITESPACES = require('../internals/whitespaces');
|
||
|
|
|
||
|
|
var charCodeAt = uncurryThis(''.charCodeAt);
|
||
|
|
var replace = uncurryThis(''.replace);
|
||
|
|
var numberToString = uncurryThis(1.1.toString);
|
||
|
|
var NEED_ESCAPING = RegExp('[!"#$%&\'()*+,\\-./:;<=>?@[\\\\\\]^`{|}~' + WHITESPACES + ']', 'g');
|
||
|
|
|
||
|
|
// `RegExp.escape` method
|
||
|
|
// https://github.com/tc39/proposal-regex-escaping
|
||
|
|
$({ target: 'RegExp', stat: true, forced: true }, {
|
||
|
|
escape: function escape(S) {
|
||
|
|
var str = toString(S);
|
||
|
|
var firstCode = charCodeAt(str, 0);
|
||
|
|
// escape first DecimalDigit
|
||
|
|
return (firstCode > 47 && firstCode < 58 ? '\\x3' : '') + replace(str, NEED_ESCAPING, function (match) {
|
||
|
|
var hex = numberToString(charCodeAt(match, 0), 16);
|
||
|
|
return hex.length < 3 ? '\\x' + padStart(hex, 2, '0') : '\\u' + padStart(hex, 4, '0');
|
||
|
|
});
|
||
|
|
}
|
||
|
|
});
|