Function identity

identity<T>(t: T): T
Returns the provided value unchanged.

Useful as a default callback or placeholder in higher-order functions.
Type Parameters
- T
  The value type.
Parameters
- t: T
  The value to return.
Returns T
The same value.
Example
```
identity(42);        // 42
identity("hello");   // "hello"
```
- Defined in src/function/basic.ts:33