TypeScript | Node.js | Express.js API Bootstrap (template)

This repository is intended to serve as a starting point if you want to bootstrap a quick API project in TypeScript.

⚠️ It is meant for simple use cases where you don't need the extra complexity, just a barebones, simple Node.js API. This has its shortcomings:

• No proper DI framework/container/tool
• No Clean Architecture structuring (I strongly suggest a DDD approach)
  • Coupling of infrastructure and application layers unless you separate them yourself

If these issues don't matter for your intended use, or you know how to fix them, this will be a fast way to have an API running. If you're looking for a more scalable strategy, check my TS DDD template (coming soon™) or if you're looking for a simple, plain Node.js app look at my TypeScript Node.js Template

Features

• TypeScript (v5)
  • Find other tsconfig.json options here
• ts-node-dev
• Pure DI
  • If you prefer using containers, check out tsyringe, typescript-ioc, TypeDI, NestJS, InversifyJS or Awilix
  • If you prefer mocking dependencies (no DI) use proxyquire
• Prettier
• ESLint with:
  • eslint-config-prettier to make Prettier and ESLint play nice together.
  • eslint-plugin-import to allow for sorting the imports automatically.
  • typescript-eslint for TS-specific rules
  • Jest plugin for Jest-specific rules
• Jest (can be substituted with tap)
  • Accompanied by Supertest to test API calls. Not needed if you do proper DI with something like NestJS.
• GitHub Action workflows set up to run tests and formatting+linting on push

Local dev

Action	Command	Description
Install dependencies	npm i	Installs the necessary dependencies
Compile	npm run build	Transpiles TS into JS
Compile (Production)	npm run build:prod	Transpiles TS into JS removing unnecessary artifacts
Run	npm run start	Runs the compiled JS
Dev	npm run dev	Runs the TypeScript code and watches for changes
Debug	npm run dev:debug	Same as Dev but also attaches the debugger

Testing

Jest

Action	Command	Description
Test	npm run test	Runs all the tests

Formatting

Action	Command	Description
Format	npm run format	Ensures code follows style guides

Linting

Action	Command	Description
Lint	npm run lint	Runs the linter and points out mistakes
Lint + Fix	npm run lint:fix	Same as above but fixing auto-fixable problems