Building Enterprise JavaScript Applications

Refactoring our application

Now that our tests have been refactored, we can now turn our focus to refactoring our application code. The great thing about having existing E2E tests is that if, during the refactoring, we break something, the tests will fail and we'd be able to fix them quickly.

As we did before, let's list out all the issues with our current code:

• It is not very readable.
• We have to work with quite low-level constructs, such as streams and buffers.
• We have not taken into consideration performance and security implications. For example, we are not handling situations where the payload is extremely large (or even infinite). This is a dangerous situation to avoid if we want to ensure high-availability of our service.

For the ...