Learn node.js
Short lessons written around the screening tests employers use. Read one, then take the test.
The event loop, modules and async codePredict the order of logs, timers and promises, and load modules correctly in CommonJS and ES module projects.Lesson 1
Express routing, middleware, errors and configFollow a request through Express middleware, handle errors in one place, and keep configuration in environment variables.Lesson 2
Working with files, paths and streams in Node.jsRead and write files with fs.promises, build paths that work on any machine, and stream large files instead of loading them.Lesson 3
npm, package.json, scripts and semantic versioningRead a package.json with confidence, know what ^ and ~ allow, and use the lockfile and npm ci so installs match everywhere.Lesson 4
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