Add interceptor at the beginning of list

[ten-kis]

Please avoid duplicates

• I checked all open feature requests and none of them matched my request.

Context

When interceptor is added - it's added at the end of the list. I'd like to have opportunity to add interceptor at the beginning of the list so it'll be checked before existing.

Context:
When I write integration tests I have global mock for all third party calls that can potentially happen - it helps me forget about any potential call that can happen when I write my test scenraio. For example I'm covering some GET /something request with tests: this endpoint sends another call to third party that I already have mocked globally. In this particular test scenario I don't care about this call so I just want third party response to me with something that not an error to proceed with scenario I care about. And this is how I write tests for 95% of test scenarios.

Here's how this global mock looks like

const UUID_REGEXP = /[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}/;
        Nock(BASE_URL)
            .persist()
            .get(new RegExp(`/v1/something/${UUID_REGEXP.source}`))
            .reply(200, () => {
                const id = 'uuid_v4';
                return { id };
            });

As you can see interceptor above catches any potential request to /v1/something/{id} so if for particular scenario I want to add another interceptor for a specific ID - I can't cause the global interceptor has regexp that catches everything. So what I'm doing is

1. Removing existing interceptor
2. Adding interceptor to catch request with my specific ID I need
3. Setting global interceptor back at the end of test

If there would be opportunity to add interceptor at the beginning of list for a specific ID - I would not need to remove my global interceptor! The interceptor for a specific ID would be check request at first, and if ID doesn't match - the request would checked by second interceptor (which is with RegExp to catch any ID) and mock it.

From the interface how to do it: I don't care being honest, for example it can be

Nock(BASE_URL)
            .persist()
            .get(`/v1/something/1`), {unshift: true}) // specific flag to add to the beginnig of list
            .reply(200, {id: 1});

Alternatives

No response

If the feature request is accepted, would you be willing to submit a PR?

• yes