lingo3d/lib/memo/utils/computeOnce.js

Lingo3D is a React/Vue 3d game development framework that ships with a complete visual editor

export default (cb) => {
    const cache = new WeakMap();
    return (item) => {
        if (cache.has(item))
            return cache.get(item);
        const result = cb(item);
        cache.set(item, result);
        return result;
    };
};
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