Function assert

assert(value: unknown, message?: string): asserts value
Asserts that a value is truthy, throwing an error if it is not.
Parameters
- value: unknown
  The value to check.
- Optionalmessage: string
  Optional error message to throw if the assertion fails.
Returns asserts value
Throws
Error if the value is falsy.
Example
```
assert(user !== null, 'User must be defined')
```
- Defined in packages/pdf-lite/src/utils/assert.ts:13