mdx-m3-viewer/src/common/arrayunique.js

A browser WebGL model viewer. Mainly focused on models of the games Warcraft 3 and Starcraft 2.

/**
 * Returns an array that only contains unique values found in the source array.
 *
 * @param {array} a
 * @return {array}
 */
export default function unique(a) {
  return a.reverse().filter((e, i, arr) => {
    return arr.indexOf(e, i + 1) === -1;
  }).reverse();
}