UNPKG

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1/** Used to compose unicode character classes. */
2var rsAstralRange = '\\ud800-\\udfff',
3 rsComboMarksRange = '\\u0300-\\u036f',
4 reComboHalfMarksRange = '\\ufe20-\\ufe2f',
5 rsComboSymbolsRange = '\\u20d0-\\u20ff',
6 rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,
7 rsVarRange = '\\ufe0e\\ufe0f';
8
9/** Used to compose unicode capture groups. */
10var rsAstral = '[' + rsAstralRange + ']',
11 rsCombo = '[' + rsComboRange + ']',
12 rsFitz = '\\ud83c[\\udffb-\\udfff]',
13 rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
14 rsNonAstral = '[^' + rsAstralRange + ']',
15 rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
16 rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
17 rsZWJ = '\\u200d';
18
19/** Used to compose unicode regexes. */
20var reOptMod = rsModifier + '?',
21 rsOptVar = '[' + rsVarRange + ']?',
22 rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
23 rsSeq = rsOptVar + reOptMod + rsOptJoin,
24 rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';
25
26/** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
27var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');
28
29/**
30 * Converts a Unicode `string` to an array.
31 *
32 * @private
33 * @param {string} string The string to convert.
34 * @returns {Array} Returns the converted array.
35 */
36function unicodeToArray(string) {
37 return string.match(reUnicode) || [];
38}
39
40export default unicodeToArray;