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\\ufe20-\\ufe23',
9 rsComboSymbolsRange = '\\u20d0-\\u20f0';
11 /** Used to compose unicode capture groups. */
12 var rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']';
15 * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and
16 * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).
18 var reComboMark = RegExp(rsCombo, 'g');
21 * Deburrs `string` by converting
22 * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
23 * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)
24 * letters to basic Latin letters and removing
25 * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
31 * @param {string} [string=''] The string to deburr.
32 * @returns {string} Returns the deburred string.
35 * _.deburr('déjà vu');
38 function deburr(string) {
39 string = toString(string);
40 return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');
43 module.exports = deburr;