Type Alias MapFunction<I, O>

MapFunction: (chunk: I, index: number) => O | Promise<O>

Transformation function for mapping an incoming chunk to a new representation.

Type Parameters

I
The type of input chunk.
O
The type of output chunk.

Type Declaration

- (chunk: I, index: number): O | Promise<O>
- Parameters
  - chunk: I
    The item to transform.
  - index: number
    The zero-based sequential index of the item.
  Returns O | Promise<O>
  The transformed item or a Promise resolving to it.