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Variable: indexAsync()

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

Defined in: transforms.d.ts:383

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​

Value

Parameters​

asyncIterable​

AsyncIterable<Value>

Returns​

AsyncIterable<[number, Value]>

Example​

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

Since​

v2.0.0