describeWhenProblem
functionsignature
describeWhenProblem(when, consumer): undefined | stringWhy when cannot be registered for consumer, or undefined when it can.
Parameters
| Name | Type | Description |
|---|---|---|
when | unknown |
| Name | Type | Description |
|---|---|---|
consumer | WhenConsumer |
Returns
undefined | string
Example
example
const problem = describeWhenProblem(config.capture, "middleware");
if (problem !== undefined) throw new Error(`capture: ${problem}`);