Array.prototype.reduce()
to perform right-to-left function composition.const compose = (...fns) =>
fns.reduce((f, g) => (...args) => f(g(...args)));
const add5 = x => x + 5;
const multiply = (x, y) => x * y;
const multiplyAndAdd5 = compose(
add5,
multiply
);
multiplyAndAdd5(5, 2); // 15
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