Generate fantastical names of worlds, cities, or general places.

worldNameGenerator.js

function generatePlace(type) {
    var name = "";
    var l = "bcdfghjklmnprstvwxyz";
    var v = "aeiou";
    var a = ["an","on","al","aph","ah"];
    var b = ["or","an","ro","ain","am"];
    var c = ["ia","sha","ea","ae","on","ue","a","as","in","na","o","di"];
    var d = ["ph","th","sh"];

    var sequences = [
        [l,a,l,b,c],
        [l,a,l,b,v,d],
        [l,a,l,v],
        [l,b,l,v],
        [d,a,l,v],
        [l,v,d]
    ];

    var types = {
        "country": [sequences[0],sequences[1]],
        "city": [sequences[2]],
        "planet": [sequences[3],sequences[4]],
        "name": [sequences[3],sequences[5]]
    }
    
    if (type && type in types) {
        random(types[type]).forEach(x => name += random(x));
    } else {
        random(sequences).forEach(x => name += random(x));
    }

    return name;
}

function random(a, b) { 
    if(Array.isArray(a)){
        return a[random(a.length)];
    } 
    if (typeof a === "object") {
        var key = random(Object.keys(a)); 
        return b === "key" ? key : b === "both" ? {key:key,value:a[key]} : a[key];
    }
    if (typeof a === "string" && !!a) {
        return (a.toLowerCase() === "bool") ? (Math.floor(Math.random()*2) == 1) : random(a.split(''));
    }
    if (typeof a === "number"){
        if(typeof b === "number"){
            return random(b-a)+a;
        } 
        return Math.floor(Math.random()*a);
    }
    return false;
};