- [`NonNullable<T>`](https://github.com/Microsoft/TypeScript/blob/2961bc3fc0ea1117d4e53bc8e97fa76119bc33e3/src/lib/es5.d.ts#L1446-L1449) -
  Exclude `null` and `undefined` from `T`. <details> <summary> Example
  </summary> Works with <code>strictNullChecks</code> set to <code>true</code>.
  (Read more <a href="https://example.com/x">here</a>)
