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Function: indexAsync()

indexAsync<Value>(asyncIterable): AsyncIterable<[number, Value], any, any>

Returns an async iterable equivalent to asyncIterable except each value of asyncIterable is placed in an entry containing the value's 0-based index in the iteration order followed by the value itself.

Type Parameters​

• Value

Parameters​

• asyncIterable: AsyncIterable<Value, any, any>

Returns​

AsyncIterable<[number, Value], any, any>

Example​

console.log(
  await pipe(
    asAsync([`sloth`, `more sloth`, `even more sloth`]),
    indexAsync,
    reduceAsync(toArray()),
  ),
)
//=> [ [ 0, 'sloth' ], [ 1, 'more sloth' ], [ 2, 'even more sloth' ] ]

Defined in​

transforms.d.ts:310