An extension to lunr.js to do basic character folding, converting various accented and non-ASCII characters to their (presumed) ASCII equivalents.

For example, searching for "facade" will return results for "façade" and searching for for "façade" will return results for "facade."

Install via npm npm install lunr-folding. After lunr is loaded do:

require("lunr-folding")(lunr);

Or in TypeScript:

import folding from "lunr-folding";
folding(lunr)

You can now create indexes with accented characters and search them without accents, for example:

folding(lunr);
const idx = lunr(function () {
    this.ref("id");
    this.field("text");
    this.add({ id: "1", text: "Étape 1: Collecter des bobettes" });
    this.add({ id: "2", text: "Étape 2: ???" });
    this.add({ id: "3", text: "Étape 3: Profit" });
});
const results = idx.search("etape 3");
console.log(JSON.stringify(results[0]));

Based on the original lunr.unicodeNormalizer.js by Christopher Van and the NPM-ified version by Dániel Boros