▸ map<Q, T, R>(arr: Q, callback?: ArrayCBT<T, R>, thisArg?: unknown): R[]
A more-or-less spec-compliant Array map.
remarks
Certain steps in the spec have been omitted through the use of es6 features or for performance. This implementation outperforms built-in .map but runs measurably worse than other non-spec-compliant solutions out there. If you are looking for raw speed, use the unsafe version of mapip, which outperforms everybody.
see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map
Type parameters:#
| Name | Type | Default | Description |
|---|---|---|---|
Q | unknown | unknown[] | The type of the array-like being provided. |
T | - | Q[keyof Q] | The type of elements in the array-like being provided. |
R | - | T | The return value of the provided callback, and thus, type of resulting array elements. |
Parameters:#
| Name | Type | Description |
|---|---|---|
arr | Q | The input array-like to map through. |
callback | ArrayCBT<T, R> | The callback provided to produce mapped results. This iteratee is invoked with three arguments: value, index|key, and arr. |
thisArg | unknown | The value to use as this when executing callback. |
Returns: R[]
R[] - The new mapped array.
Defined in: safe/array/map.ts:26