- Use Array.prototype.slice() to get the desired argument at index n.
- If n is negative, the nth argument from the end is returned.
//#Source https://bit.ly/2neWfJ2 const nthArg = n => (...args) => args.slice(n); const third = nthArg(2); third(1, 2, 3); // 3 third(1, 2); // undefined const last = nthArg(-1); console.log(last(1, 2, 3, 4, 5));
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