Type Alias KeyPathValue<T, KP>

KeyPathValue: KP extends [KP[0], ...(infer R)]
? R extends KeyPath ? KeyPathValue<T[KP[0]], R> : T[KP[0]]
: unknown

get the type of nested data through the use of an array of key-path.

Type Parameters

T extends { [key: string | number]: any }
KP extends KeyPath

Example

const
	data = { kill: { your: { self: [0, 1, { 0: 0, 1: { noice: "YAHAHA", 0: "you found me!" } }] } } } as const,
	keypath_to_noice_parent: ["kill", "your", "self", 2, 1] = ["kill", "your", "self", 2, 1],
	noice_parent:
		KeyPathValue<typeof data, typeof keypath_to_noice_parent>
		= { noice: "YAHAHA", 0: "you found me!" }