@nozbe/microfuzz/dist/normalizeText.js

A tiny, simple, fast fuzzy search library

"use strict";

exports.__esModule = true;
exports["default"] = normalizeText;
// @flow

var diacriticsRegex = /[\u0300-\u036f]/g;
var regexŁ = /ł/g;
var regexÑ = /ñ/g;

/**
 * Normalizes text so that it's suitable to comparisons, sorting, search, etc. by:
 * - turning into lowercase
 * - removing diacritics
 * - removing extra whitespace
 */
function normalizeText(string /*: string*/) /*: string*/{
  return string.toLowerCase()
  // get rid of diacritics
  // https://stackoverflow.com/questions/990904/remove-accents-diacritics-in-a-string-in-javascript
  // yeah, it's not perfect, but 97% is good enough and it doesn't seem worth it to add in a whole
  // library for this
  .normalize('NFD').replace(diacriticsRegex, '')
  // fix letters that unicode considers separate, not letters with diacritics
  .replace(regexŁ, 'l').replace(regexÑ, 'n').trim();
}