Function enumerate

Yields elements like [index, item] from an iterable. Index starts at zero by default.

Returns

A generator with tuples like [index, item].

Example

console.log([...enumerate(['hello', 'world'])])
// [[0, 'hello'], [1, 'world']]

// Start with index `1`
console.log([...enumerate(['hello', 'world'], 1)])
// [[1, 'hello'], [2, 'world']]