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collectInto javascript Code Snippet in 2022

functionarrayintermediate

Last Updated: 26 November 2022

Changes a function that accepts an array into a variadic function.

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

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