time-to-botec/js/node_modules/@stdlib/regexp/utf16-unpaired-surrogate/lib/regexp.js
NunoSempere b6addc7f05 feat: add the node modules
Necessary in order to clearly see the squiggle hotwiring.
2022-12-03 12:44:49 +00:00

59 lines
1.5 KiB
JavaScript

/**
* @license Apache-2.0
*
* Copyright (c) 2021 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
// MODULES //
var reUtf16UnpairedSurrogate = require( './main.js' );
// MAIN //
/**
* Matches an unpaired UTF-16 surrogate.
*
* Regular expression: `/(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])/`
*
* - `(?:[^\uD800-\uDBFF]|^)`
* - capture but do not remember anything which is not a high surrogate, including nothing
*
* - `[\uDC00-\uDFFF]`
* - match a low surrogate
*
* - `|`
* - OR
*
* - `[\uD800-\uDBFF]`
* - match a high surrogate
*
* - `(?![\uDC00-\uDFFF])`
* - but only accept the previous match if not followed by a low surrogate
*
*
* @constant
* @type {RegExp}
* @default /(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])/
*/
var RE_UTF16_UNPAIRED_SURROGATE = reUtf16UnpairedSurrogate(); // eslint-disable-line id-length
// EXPORTS //
module.exports = RE_UTF16_UNPAIRED_SURROGATE;