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README.md

TypeScript library starter

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A starter project that makes creating a TypeScript library extremely easy.

Usage

git clone https://github.com/alexjoverm/typescript-library-starter.git YOURFOLDERNAME
cd YOURFOLDERNAME

# Run npm install and write your library name when asked. That's all!
npm install

Start coding! package.json and entry files are already set up for you, so don't worry about linking to your main file, typings, etc. Just keep those files with the same name.

Features

Importing library

You can import the generated bundle to use the whole library generated by this starter:

import myLib from 'mylib'

Additionally, you can import the transpiled modules from dist/lib in case you have a modular library:

import something from 'mylib/dist/lib/something'

NPM scripts

  • npm t: Run test suite
  • npm start: Run npm run build in watch mode
  • npm run test:watch: Run test suite in interactive watch mode
  • npm run test:prod: Run linting and generate coverage
  • npm run build: Generate bundles and typings, create docs
  • npm run lint: Lints code
  • npm run commit: Commit using conventional commit style (husky will tell you to use it if you haven't 😉)

Excluding peerDependencies

On library development, one might want to set some peer dependencies, and thus remove those from the final bundle. You can see in Rollup docs how to do that.

Good news: the setup is here for you, you must only include the dependency name in external property within rollup.config.js. For example, if you want to exclude lodash, just write there external: ['lodash'].

Automatic releases

Prerequisites: you need to create/login accounts and add your project to:

Prerequisite for Windows: Semantic-release uses node-gyp so you will need to install Microsoft's windows-build-tools using this command:

npm install --global --production windows-build-tools

Setup steps

Follow the console instructions to install semantic release and run it (answer NO to "Do you want a .travis.yml file with semantic-release setup?").

Note: make sure you've setup repository.url in your package.json file

npm install -g semantic-release-cli
semantic-release-cli setup
# IMPORTANT!! Answer NO to "Do you want a `.travis.yml` file with semantic-release setup?" question. It is already prepared for you :P

From now on, you'll need to use npm run commit, which is a convenient way to create conventional commits.

Automatic releases are possible thanks to semantic release, which publishes your code automatically on github and npm, plus generates automatically a changelog. This setup is highly influenced by Kent C. Dodds course on egghead.io

Git Hooks

There is already set a precommit hook for formatting your code with Prettier 💅

By default, there are two disabled git hooks. They're set up when you run the npm run semantic-release-prepare script. They make sure:

This makes more sense in combination with automatic releases

FAQ

Array.prototype.from, Promise, Map... is undefined?

TypeScript or Babel only provides down-emits on syntactical features (class, let, async/await...), but not on functional features (Array.prototype.find, Set, Promise...), . For that, you need Polyfills, such as core-js or babel-polyfill (which extends core-js).

For a library, core-js plays very nicely, since you can import just the polyfills you need:

import "core-js/fn/array/find"
import "core-js/fn/string/includes"
import "core-js/fn/promise"
...

What is npm install doing on first run?

It runs the script tools/init which sets up everything for you. In short, it:

  • Configures RollupJS for the build, which creates the bundles
  • Configures package.json (typings file, main file, etc)
  • Renames main src and test files

What if I don't want git-hooks, automatic releases or semantic-release?

Then you may want to:

  • Remove commitmsg, postinstall scripts from package.json. That will not use those git hooks to make sure you make a conventional commit
  • Remove npm run semantic-release from .travis.yml

What if I don't want to use coveralls or report my coverage?

Remove npm run report-coverage from .travis.yml

Resources

Projects using typescript-library-starter

Here are some projects that use typescript-library-starter:

Credits

Made with ❤️ by @alexjoverm and all these wonderful contributors (emoji key):


Ciro

💻 🔧

Marius Schulz

📖

Alexander Odell

📖

Ryan Ham

💻

Chi

💻 🔧 📖

Matt Mazzola

💻 🔧

Sergii Lischuk

💻

Steve Lee

🔧

Flavio Corpa

💻

Dom

🔧

Alex Coles

📖

David Khourshid

🔧

Aarón García Hervás

📖

Jonathan Hart

💻

Sanjiv Lobo

📖

Stefan Aleksovski

💻

dev.peerapong

💻

Aaron Groome

📖

Aaron Reisman

💻

kid-sk

📖

Andrea Gottardi

📖

Yogendra Sharma

📖

Rayan Salhab

💻

This project follows the all-contributors specification. Contributions of any kind are welcome!

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