typescript definition of array $push does not match javascript definition

[blushingpenguin]

in index.d.ts ArraySpec has push taking a single array element:

type ArraySpec<T, C extends CustomCommands<object>> =
  | { $push: T }
  | { $unshift: T }
  | { $splice: Array<[number] | [number, number] | [number, number, T]> }
  | { [index: string]: Spec<T, C> }; // Note that this does not type check properly if index: number.

but in index.js invariantPushAndUnshift is called:

function invariantPushAndUnshift(value, spec, command) {
  invariant(
    Array.isArray(value),
    'update(): expected target of %s to be an array; got %s.',
    command,
    value
  );

[kolodny]

Closed via #113