#1340 fail fast when `uponReceiving` is not set Issue created by sku0x20 Checklist Before making a feature request, I have: • [ x] Searched the issues to check that this feature hasn't been requested before • [ x] Checked the documentation to see if it is possible to do what I want already Feature description when adding interactions in PactV4, fail fast if

uponReceiving

is not set. from what i found its a required parameter. if it can't be done; pls add it in the docs. Use case save debug time by failing fast if

uponReceiving

is not set. Issue my pact file was always having the last interaction no matter how i run the tests. i wasted 2 days of debugging, thinking it was different pact instances causing the issue, trying to have global setup, finding PactfileWriteMode can help but not there in v4, removed cause rust core does merging by default, looking at debug traces, which says merging, yet it's not happening. after all this finding

uponReceiving

by chance. very frustrated rn. :( imho, instead of

uponReceiving

just putting

description

in builder would have helped too. anyways, as a stupid person i would really appreciate some basic stupidity checks. :( pact-foundation/pact-js