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ary

TS JS Deno

Creates a function that accepts up to n arguments, ignoring any additional arguments.

Call the provided function, fn, with up to n arguments, using Array.prototype.slice(0, n) and the spread operator (...).

typescript
const ary =
  <T = any>(fn: (...args: T[]) => any, n: number) =>
  (...args: T[]) =>
    fn(...args.slice(0, n));
typescript
const firstTwoMax = ary(Math.max, 2);
[[2, 6, 12], [6, 4, 8], [10]].map((x) => firstTwoMax(...x)); // [6, 6, 10]