before

Runs a callback before a method, which can replace its arguments by returning an array.

function before<M extends PatchParent, P extends string>(parent: M, method: P, callback: BeforeCallback<ArgsOf<M[P]>, ResultOf<M[P]>, SelfOf<M, M[P]>>, options?: PatchOptions): () => void

Parameters

Name	Type	Description
parent	`M`	The object holding the method.
method	`P`	The method's key.
callback	`BeforeCallback<ArgsOf<M[P]>, ResultOf<M[P]>, SelfOf<M, M[P]>>`	Receives the patch context.
options?	`PatchOptions`	Patch options.

Returns

() => void

A function removing the patch.