initial (Functional Programming) ​
Creates a function that returns all values except the last one. Use it with pipe.
typescript
const result = pipe(array, initial());INFO
Prefer the original es-toolkit initial in ordinary code. Use this fp variant when composing transformations with pipe.
Usage ​
initial returns a new array without the last value of the piped array.
typescript
import { initial, pipe } from 'es-toolkit/fp';
pipe([1, 2, 3], initial()); // => [1, 2]Parameters ​
This function takes no arguments; call it as initial().
Returns ​
((array: readonly T[]) => T[]): A function that maps a readonly T[] to all values except the last one.