zora VS proxyquire

ℹ️ Since all you need from the test runner is to know if the tests passed or failed, you won't need anything that advanced. The zora testing library looks like a good alternative if you want to try something different.

checkout [zora's][https://github.com/lorenzofox3/zora] more interesting yet still not a huge issue benchmark

Take a look at proxyquire: https://www.npmjs.com/package/proxyquire - they do some fancy magic to allow you to stub es module imports.

Now that we know how to call/execute a lambda function in our local. Let us learn about mocking the dependencies inside the lambda function. These dependencies can be any third-party libraries or DB call or even an API call. To override and mock these dependencies we can use proxyquire package.

I have been wary of this from when it first came about with rewire and similar libraries. As time has gone on my opinion has only strengthened, and with jest actively embracing mocking modules, I feel like nobody has even bothered to make a counter argument.

If you move foo to a different file and use something like proxyquire, you can override the require from that file to foo.js and sub in something else in the test.