Create an NPM package for React Native

An example repo of how to create an NPM package for use in other projects. In this case, React Native.

Steps

• Create a new project which includes a package.json. In this case we're using expo so we can test then release.

  npx create-expo-app npm-rn-counter

• Define then export the components, functions, constants we want to expose from our package.

  • This package exports from ./src/lib/Counter.js which exports 1 component, constant, function each.

• Add necessary keys to package.json to configure npm.

  • Version package "version": "1.0.51".
  • Include the ./src and ./README.md with "files": [].
  • Define entry point for modules in this package "main": "index.js".
  • Info which shows up on the npm.com registry web page "repository": {}.

  Semantic version which we increment each time we want to publish a new version of our package.

  "main": "./src/lib/Counter.js",
  "version": "1.0.51",
  "files": [
      "src",
      "README.md"
  ],
  "repository": {
      "type": "git",
      "url": "git+https://github.com/PrimeTimeTran/npm-counter"
  },

• Login to NPM from CLI, then publish it.

  npm publish

FAQ

• Do I have to commit before publishing? No, npm is it's own thing.
• If expo hangs when importing your package, it might be because of this issue.