runBefore

Creates a function wrapper that runs a callback before the wrapped function. The original return value is preserved.

Use it for small cross-cutting actions such as marking state dirty, logging, or clearing an error before the main operation runs.

Importing

import { runBefore } from '@almighty-shogun/utils';

Usage

import { runBefore } from '@almighty-shogun/utils';

const withDirtyState = runBefore(() => {
    // Mark form dirty.
});

const updateName = withDirtyState((name: string) => name.trim());

Parameters

before: () => void
Callback to run before the wrapped function.

Returns

A wrapper factory that returns functions with the same parameters and return type.

Type signature

declare function runBefore<
    T extends (...args: any[]) => any
>(before: () => void): (fn: T) => T;