Function assertSet

assertSet<T>(value: undefined | null | T, message?: string): asserts value is T
Assertion function to assert that a value is set. Any value that is not null or undefined is considered set including falsy values such as 0 or "".

Throws MissingValueError if value is not set.
Type Parameters
- T
Parameters
- value: undefined | null | T
  the value asserted to be set.
- message: string = "Expected value to be set, but it was not"
  an optional exception message to use if the check fails.
Returns asserts value is T
Example
```
const value = getValue();
//    ^?   string | null

assertSet(value);

// value is now guaranteed to be non-null
```
Since
v6.15.0

Throws
MissingValueError if value is not set.
- Defined in packages/logic/src/assertions/assert-set.ts:29