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70 lines
3.0 KiB
JavaScript
70 lines
3.0 KiB
JavaScript
/** Used to compose unicode character classes. */
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const rsAstralRange = '\\ud800-\\udfff'
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const rsComboMarksRange = '\\u0300-\\u036f'
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const reComboHalfMarksRange = '\\ufe20-\\ufe2f'
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const rsComboSymbolsRange = '\\u20d0-\\u20ff'
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const rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange
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const rsDingbatRange = '\\u2700-\\u27bf'
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const rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff'
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const rsMathOpRange = '\\xac\\xb1\\xd7\\xf7'
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const rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf'
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const rsPunctuationRange = '\\u2000-\\u206f'
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const rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000'
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const rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde'
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const rsVarRange = '\\ufe0e\\ufe0f'
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const rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange
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/** Used to compose unicode capture groups. */
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const rsApos = "['\u2019]"
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const rsBreak = `[${ rsBreakRange }]`
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const rsCombo = `[${ rsComboRange }]`
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const rsDigits = '\\d+'
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const rsDingbat = `[${ rsDingbatRange }]`
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const rsLower = `[${ rsLowerRange }]`
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const rsMisc = `[^${ rsAstralRange }${ rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange }]`
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const rsFitz = '\\ud83c[\\udffb-\\udfff]'
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const rsModifier = `(?:${ rsCombo }|${ rsFitz })`
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const rsNonAstral = `[^${ rsAstralRange }]`
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const rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}'
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const rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]'
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const rsUpper = `[${ rsUpperRange }]`
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const rsZWJ = '\\u200d'
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/** Used to compose unicode regexes. */
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const rsMiscLower = `(?:${ rsLower }|${ rsMisc })`
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const rsMiscUpper = `(?:${ rsUpper }|${ rsMisc })`
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const rsOptContrLower = `(?:${ rsApos }(?:d|ll|m|re|s|t|ve))?`
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const rsOptContrUpper = `(?:${ rsApos }(?:D|LL|M|RE|S|T|VE))?`
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const reOptMod = `${ rsModifier }?`
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const rsOptVar = `[${ rsVarRange }]?`
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const rsOptJoin = `(?:${ rsZWJ }(?:${ [rsNonAstral, rsRegional, rsSurrPair].join('|') })${ rsOptVar + reOptMod })*`
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const rsOrdLower = '\\d*(?:(?:1st|2nd|3rd|(?![123])\\dth)\\b)'
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const rsOrdUpper = '\\d*(?:(?:1ST|2ND|3RD|(?![123])\\dTH)\\b)'
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const rsSeq = rsOptVar + reOptMod + rsOptJoin
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const rsEmoji = `(?:${ [rsDingbat, rsRegional, rsSurrPair].join('|') })${ rsSeq }`
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/** Used to match complex or compound words. */
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const reUnicodeWord = RegExp([
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`${ rsUpper }?${ rsLower }+${ rsOptContrLower }(?=${ [rsBreak, rsUpper, '$'].join('|') })`,
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`${ rsMiscUpper }+${ rsOptContrUpper }(?=${ [rsBreak, rsUpper + rsMiscLower, '$'].join('|') })`,
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`${ rsUpper }?${ rsMiscLower}+${ rsOptContrLower }`,
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`${ rsUpper }+${ rsOptContrUpper }`,
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rsOrdUpper,
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rsOrdLower,
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rsDigits,
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rsEmoji
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].join('|'), 'g')
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/**
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* Splits a Unicode `string` into an array of its words.
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*
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* @private
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* @param {string} The string to inspect.
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* @returns {Array} Returns the words of `string`.
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*/
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function unicodeWords(string) {
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return string.match(reUnicodeWord) || []
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}
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export default unicodeWords
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