LeetCode: Vowel Spellchecker Solution

1/**
2 * @param {string[]} wordlist
3 * @param {string[]} queries
4 * @return {string[]}
5 */
6var spellchecker = function (wordlist, queries) {
7  const vowelRegex = new RegExp("[aeiou]", "gi")
8  const replaceVowel = str => str.toLowerCase().replace(vowelRegex, "_")
9
10  const hashTable0 = wordlist.reduce(
11    (acc, word) => acc.set(word, word),
12    new Map()
13  )
14  const hashTable1 = wordlist.reduceRight(
15    (acc, word) => acc.set(word.toLowerCase(), word),
16    new Map()
17  )
18  const hashTable2 = wordlist.reduceRight(
19    (acc, word) => acc.set(replaceVowel(word), word),
20    new Map()
21  )
22
23  return queries.map(query => {
24    return (
25      hashTable0.get(query) ||
26      hashTable1.get(query.toLowerCase()) ||
27      hashTable2.get(replaceVowel(query)) ||
28      ""
29    )
30  })
31}