Helper function to filter the all wordle list.

wordleFilter.js

// Use on https://raw.githubusercontent.com/chidiwilliams/wordle/main/src/data/words.json

const preTag = document.querySelector('pre');
const all = JSON.parse(preTag.textContent);
/**
 * Filters the all array to return only the wordles that match the given criteria.
 * @param excludedLetters String of letters to exclude from the wordle.
 * @param includedLetters String of letters to include in the wordle.
 * @param positionalChecks Function that takes a item and returns true if it passes the positional checks. e.g. (item) => item[0] === 'a' && item[1] === 'b'
 * @returns String[] of possible wordles.
 */
function getPossibleWordles(excludedLetters, includedLetters, positionalChecks){
  let filtered = all.filter((item) => {
    for(let excluded of excludedLetters){
      if(item.includes(excluded)){
          return false;
      }
    }
    for(let included of includedLetters){
      if(!item.includes(included)){
          return false;
      }
    }
    return (positionalChecks(item));
  })
  return filtered;
}