minimal node jest typescript template

Install

npm i

How to use

just put whatever you need on index.ts and run with

npm run dev

or create whatever folder and files you need and its tests. For instance:

example
|_main.ts
|_main.test.ts

and run

npm t

Niceties and opinions

jest enviroment

• jest-watch-typeahead let you filter tests by filename or test name
• use absolute imports from src in test files

typescript

• global.d.ts overrides .reduce() type, removing unecessary overloads that makes it harder to check type inferrence correctness while writing the callback.