Function defined

defined<T>(value: T | null | undefined): T
Narrows a possibly-absent value, throwing where it is absent.
Type Parameters
- T
  The present type.
Parameters
- value: T | null | undefined
  The value to narrow.
Returns T
The value, present.

Throws
An Error when the value is null or undefined.
- Defined in src/testing/index.ts:127