flatMapDeep
Import from @varavel/vdl-plugin-sdk/utils/arrays.
function flatMapDeep<T, U>(arr, iteratee): ExtractNestedArrayType<U>[];
Recursively maps each element in an array using a provided iteratee function and then deeply flattens the resulting array.
Type Parameters
| Type Parameter | Description |
|---|---|
T | The type of elements within the array. |
U | The type of elements within the returned array from the iteratee function. |
Parameters
| Parameter | Type | Description |
|---|---|---|
arr | readonly T[] | The array to flatten. |
iteratee | (item, index, array) => U | The function that produces the new array elements. It receives the element, its index, and the array. |
Returns
ExtractNestedArrayType<U>[]
A new array that has been flattened.
Example
const result = flatMapDeep([1, 2, 3], n => [[n, n]]);
// [1, 1, 2, 2, 3, 3]