JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://rawgit.com/olivernn/lunr.js/master/lunr.js"></script>

JavaScript

var builder = new lunr.Builder()

lunr.tokenizer.separator = ' ';

lunr.trimmer = function (token) {
  return token.update(function (s) {
    return s.replace(/^\W+/, '').replace(/\W+$/, '')
  })
}

builder.pipeline.add(lunr.trimmer)

builder.field("description")

builder.add({"description":"xxĀ"})
builder.add({"description":"xxx"})

builder.createTokenSet()

var queryTokenSet = lunr.TokenSet.fromString("*")

builder.tokenSet.intersect(queryTokenSet).toArray().forEach(function (s) {
  if (builder.invertedIndex[s] === undefined) {
    // this should never happen, but it does
    alert("tokenSet invertedIndex mismatch: " + s)
  } else {
    alert("all fine: " + s)
  }
})