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