flat() function

フラット化された Iterable/AsyncIterable を返します。最初の引数が数値の場合、より多くのフラット化を実行します flat([[[1,2]]], 2) // [1,2]

Signature:

declare function flat<
  A extends Iterable<unknown> | AsyncIterable<unknown>,
  B extends number = 1,
>(iterator: A, depth?: B): ReturnFlatType<A, B>;

Example

const iter = flat([1, [2, 3], [[4, 5]]]);
iter.next(); // {done:false, value: 1}
iter.next(); // {done:false, value: 2}
iter.next(); // {done:false, value: 3}
iter.next(); // {done:false, value: [4, 5]}
iter.next(); // {done:true, value: undefined}

// with pipe
pipe([1, [2, 3], [[4, 5]]], flat, toArray); // [1, 2, 3, [4, 5]]

await pipe(Promise.resolve([1, [2, 3], [[4, 5]]]), flat, toArray); // [1, 2, 3, [4, 5]]

Try It

see pipe, toAsync, toArray

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