Solution for "Follow The White Rabbit" by TrustPilot

follow-the-white-rabbit.js

var
    fetch = require('node-fetch'),
    md5 = require('md5'),
    md5s = ["e4820b45d2277f3844eac66c903e84be", "23170acc097c24edb98fc5488ab033fe", "665e5bcb0c20062fe8abaaf4628bb154"],
    match_md5 = frase => md5s.indexOf(md5(frase)) !== -1,
    word2map = word => word.split('').reduce((acc, c) => {acc[c] = acc[c] || 0; acc[c]++; return acc}, {}),
    match = rm => word => {
        var char, i = 0, wm = {};
        while (i < word.length) {
            char = word[i];
            if (rm[char] === undefined) return false;
            wm[char] = wm[char] || 0;
            wm[char]++;
            if (wm[char] > rm[char]) return false;
            i++;
        }
        return word.length !== 0;
    },
    minus = (m, word) => word.split('').reduce((acc, c) => {acc[c]--;if (acc[c] === 0) delete acc[c];return acc}, Object.assign({}, m)),
    calc = (m, n, words, len, frase) =>
        words.forEach(word => {
            var l = len + word.length;
            if (l > n) return
            if (l === n) return match_md5(frase.concat(word).join(' ')) && console.log(frase.concat(word).join(' '))
            if (frase.length < 3) {
                var cm = minus(m, word);
                calc(cm, n, words.filter(match(cm)), l, frase.concat(word))
            }
        }),
    am = word2map("poultryoutwitsants");

fetch("http://followthewhiterabbit.trustpilot.com/cs/wordlist")
    .then(r => r.text())
    .then(r => r.split('\n').filter(match(am)).reverse())//99176->1788
    .then(words => calc(am, 18, words, 0, []))