Return length of arguments passed

94.5% acceptance

Mar 2, 2026

419

176

Write a function argumentsLength that returns the count of arguments passed to it.

Solution

TypeScript

Time O(1)

Space O(1)

LeetCode

solution.ts

type JSONValue =
  | null
  | boolean
  | number
  | string
  | JSONValue[]
  | { [key: string]: JSONValue };

function argumentsLength(...args: JSONValue[]): number {
  return args.length;
}

/**
 * argumentsLength(1, 2, 3); // 3
 */