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JavaScript to TypeScript

You already have working JavaScript. This course converts it.

Intermediate · 33 lessons · 10 modules

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About this course

Starting from a finished job application tracker and the command line tool that reads its log, you turn eighty-five files into strict TypeScript, one at a time, and learn the language from what each conversion demands. Inference, unions, narrowing, generics, discriminated unions, declaration files, the DOM and its nulls, a typed Node server, and the migration playbook for the codebase you have at work.

LevelIntermediate
Reading time13h 10m, at your own pace
Lessons33 across 10 modules
Source codeDownloadable with every chapter

Course curriculum