javascript-dictionary-comprehension

test.js

function pipe(data, fn) {
    if (typeof data === 'object' && data != null) {
        return Object.fromEntries(
            Object.keys(data).map(key => [key, fn(key, data[key])])
        );
    }
}

const example = {
    hello: 1,
    world: 2
}

const result = pipe(example, (key, val) => val * 2);

console.log(example);
console.log(result);