asyncConcat

The asyncConcat() function concatenates synchronous or asynchronous iterables into one async generator, in input order.

Interactive example

Syntax

function asyncConcat<
	const GenericElement extends unknown,
>(
	elements: AsyncIterable<GenericElement> | Iterable<GenericElement>,
): (
	iterator: AsyncIterable<GenericElement> | Iterable<GenericElement>
) => AsyncGenerator<GenericElement, void, unknown>;

function asyncConcat<
	const GenericElement extends unknown,
>(
	iterator: AsyncIterable<GenericElement> | Iterable<GenericElement>,
	elements: AsyncIterable<GenericElement> | Iterable<GenericElement>,
	...elementsRest: (AsyncIterable<GenericElement> | Iterable<GenericElement>)[]
): AsyncGenerator<GenericElement, void, unknown>;

Parameters

• iterator: Source iterable or async iterable (classic style only).
• elements: Iterable or async iterable to append at the end.
• elementsRest: Additional iterables or async iterables appended in order.

Return value

A lazy AsyncGenerator emitting values from all inputs in order.

See also

• concat - Sync iterable version
• asyncFlat - Flattens async/sync nested iterables
• asyncMap - Transforms values asynchronously