Function map

map<T, R, Context>(arr, cb, context?): R[]
Array mapping.
Type Parameters
- T
- R
- Context
Parameters
- arr: readonly T[]
- cb: ((this, val, index?, arr?) => R)
  - - (this, val, index?, arr?): R
    - Parameters
      this: Context
      val: T
      Optional index: number
      Optional arr: readonly T[]
      Returns R
- Optional context: Context
Returns R[]
Must be an array.

Typeparam
T Type in Array

Typeparam
R Type Returned