Migrate from jest to vitest + msw (pactjs-cli) #1024
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Randynamic
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Here's the first migration from Jest to Vitest + MSW. My plan is to go through all packages and wrap up with some shared helpers or config where it makes sense.
I believe this one is great for starters as it not only introduces Vitest, but also MSW. This combo really lifts our tests to the next level. For instance, no more fiddling to get mocks right, but intercepting requests at the lowest possible level. So it doesn't matter what lib we are using to do requests.
Speed is also a major win. Vitest is consistently at least 50-75% faster and I predict this difference will only get larger when the projects/tests grow.
Jest:
Vitest: