Epicmafia Keyword Detection

// from https://epicmafia.com/javascripts/m/mafia_game.js?1557699857?1557699857
// using this NLP library: https://github.com/spencermountain/compromise

add_role_hoverables = function(msg) {
    var nouns, regex, valid_aliases;
    // replacing the line below with 'nouns = msg.split(' ');' would remove most of the current problems, as far as I can tell - Travis
    nouns = nlp(msg).nouns().out("array");
    valid_aliases = nouns.map(function(_this) {
        return function(noun) {
            var ltoken;
            ltoken = noun.toLowerCase();
            if (ROLE_ALIASES_TO_ID[ltoken]) {
                return ltoken
            } else {
                return null
            }
        }
    }(this)).filter(function(_this) {
        return function(alias) {
            return Boolean(alias)
        }
    }(this));
    if (valid_aliases.length === 0) {
        return msg
    }
    regex = new RegExp("(" + valid_aliases.join("|") + ")","ig");
    msg = msg.replace(regex, function(_this) {
        return function(substring, match) {
            var id;
            id = ROLE_ALIASES_TO_ID[match.toLowerCase()];
            if (id == null) {
                return substring
            }
            return role_description_tmpl({
                alias: match,
                id: id
            })
        }
    }(this));
    return msg
}