← Back to the masterclass
Chapter 09
Close the Loop With Automated Verification
If nothing checks itself, nothing is actually finished.
What you will be able to do: You can prove a behaviour with a test and keep a suite that fails loudly when something regresses.
Tools you will use
node:testESLintTypeScriptCI
Scripts shipped with this chapter
concurrency.test.jsself-correct.js
Your Day 1 checklist
- 1Write a failing test first
- 2Write the minimum code to pass
- 3Run lint and typecheck in CI
- 4Run the full suite and read the count
The written lessons, command annotations and troubleshooting guides are part of the paid masterclass and are delivered with your access.