method ReadonlyArray.map
Private
ReadonlyArray.map<U>(
callbackfn: (
value: T,
index: number,
array: readonly T[],
) => U
,
thisArg?: any,
): U[]

Calls a defined callback function on each element of an array, and returns an array that contains the results.

Type Parameters

Parameters

callbackfn: (
value: T,
index: number,
array: readonly T[],
) => U

A function that accepts up to three arguments. The map method calls the callbackfn function one time for each element in the array.

optional
thisArg: any

An object to which the this keyword can refer in the callbackfn function. If thisArg is omitted, undefined is used as the this value.

Return Type

U[]