JavaScript: Change function that accepts an array into a variadic function

JavaScript fundamental (ES6 Syntax): Exercise-43 with Solution

Write a JavaScript program to change a function that accepts an array into a variadic function.

Note: Given a function, return a closure that collects all inputs into an array-accepting function.

• Given a function, return a closure that collects all inputs into an array-accepting function.

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
const collectInto = fn => (...args) => fn(args);
const Pall = collectInto(Promise.all.bind(Promise));
let p1 = Promise.resolve(1);
let p2 = Promise.resolve(2);
let p3 = new Promise(resolve => setTimeout(resolve, 2000, 3));
Pall(p1, p2, p3).then(console.log); // [1, 2, 3] (after about 2 seconds)

Sample Output:

[1,2,3]

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-1-43 by w3resource (@w3resource) on CodePen.

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