uid11

Fix hooks-faq.md, unnecessary dependency in example?

4

If I understand correctly the intended API of the `useEventCallback` custom hook, the `dependencies` array should contain all the dependencies of the `fn` callback itself (as in the standard `useCallback`...

533 - Concat

9

```ts type Tuple = readonly unknown[]; type Concat = [...T, ...U]; ```

1042 - IsNever

2

This solution seems too simple, but in my opinion, using the standard `Equal` function is the most correct way to create functions of the form `IsNever`, `IsAny`, `IsVoid`, and so...

599 - Merge

12

```ts type Merge = { [K in keyof F | keyof S]: K extends keyof S ? S[K] : K extends keyof F ? F[K] : never; }; ```

531 - String to Union

8

```ts type StrintToUnion = T extends `${infer Letter}${infer Rest}` ? Letter | StrintToUnion : never; ```

527 - Append to object

15

```ts type AppendToObject = { [K in keyof T | U]: K extends keyof T ? T[K] : V; }; ```