1 var deburrLetter = require('./internal/deburrLetter'),
2 toString = require('./toString');
4 /** Used to match latin-1 supplementary letters (excluding mathematical operators). */
5 var reLatin1 = /[\xc0-\xd6\xd8-\xde\xdf-\xf6\xf8-\xff]/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 [latin-1 supplementary letters](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
22 * to basic latin letters and removing [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
27 * @param {string} [string=''] The string to deburr.
28 * @returns {string} Returns the deburred string.
31 * _.deburr('déjà vu');
34 function deburr(string) {
35 string = toString(string);
36 return string && string.replace(reLatin1, deburrLetter).replace(reComboMark, '');
39 module.exports = deburr;