1 var deburrLetter = require('./_deburrLetter'),
2 toString = require('./toString');
4 /** Used to match Latin Unicode letters (excluding mathematical operators). */
5 var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g;
7 /** Used to compose unicode character classes. */
8 var rsComboMarksRange = '\\u0300-\\u036f',
9 reComboHalfMarksRange = '\\ufe20-\\ufe2f',
10 rsComboSymbolsRange = '\\u20d0-\\u20ff',
11 rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange;
13 /** Used to compose unicode capture groups. */
14 var rsCombo = '[' + rsComboRange + ']';
17 * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and
18 * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).
20 var reComboMark = RegExp(rsCombo, 'g');
23 * Deburrs `string` by converting
24 * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
25 * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)
26 * letters to basic Latin letters and removing
27 * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
33 * @param {string} [string=''] The string to deburr.
34 * @returns {string} Returns the deburred string.
37 * _.deburr('déjà vu');
40 function deburr(string) {
41 string = toString(string);
42 return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');
45 module.exports = deburr;