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26 lines
949 B
26 lines
949 B
/** Used to compose unicode character classes. */ |
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var rsAstralRange = '\\ud800-\\udfff', |
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rsComboMarksRange = '\\u0300-\\u036f', |
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reComboHalfMarksRange = '\\ufe20-\\ufe2f', |
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rsComboSymbolsRange = '\\u20d0-\\u20ff', |
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rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange, |
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rsVarRange = '\\ufe0e\\ufe0f'; |
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/** Used to compose unicode capture groups. */ |
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var rsZWJ = '\\u200d'; |
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/** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */ |
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var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboRange + rsVarRange + ']'); |
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/** |
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* Checks if `string` contains Unicode symbols. |
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* |
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* @private |
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* @param {string} string The string to inspect. |
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* @returns {boolean} Returns `true` if a symbol is found, else `false`. |
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*/ |
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function hasUnicode(string) { |
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return reHasUnicode.test(string); |
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} |
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module.exports = hasUnicode;
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