Discussion on: Memoization in JavaScript

[shadowtime2000]

You could also use a Map for that.

const memoize = (callback) => {
    const cache = new Map();

    return (...parameters) => {
        if (typeof cache.get(parameters) !== "undefined") {
            return cache.get(parameters);
        }
        cache.set(parameters, callback(...parameters));
        return cache.get(parameters);
    }
}

[Nikola Radulaški]

Why not just cache.get(parameters) !== undefined?

[Parwinder 👨🏻‍💻]

👏🏼 I like this