JavaScript composition

compose.js

/**
 * Compose a list of function from right to left
 * @param  {...Function} funcs
 */
const compose = (...funcs) => {
  return funcs.reduceRight((prevFunc, currentFunc) => (...args) => {
    const params = prevFunc.apply(null, args);
    return currentFunc.apply(null, Array.isArray(params) ? params : [params]);
  });
};

const plus = (x) => (y) => x + y;
const multiply = (x) => (y) => x * y;

// plus(3)(multiply(2)(10));
const composedFunc = compose(plus(3), multiply(2));

console.log(composedFunc(10));
console.log(plus(3)(multiply(2)(10)));

TODO: Check case multiple input params

✔️ Done