pm-exec - Execute whichever package manager is currently running

It is not easy to create agnostic Node.js packages, able to run with whichever package manager the developer wants. Indeed, you often need to call the package manager name inside the package.json scripts in order to, for example, run sub-scripts.

The purpose of pm-exec is to detect which package manager is currently running and call it again with provided arguments.

Language/langue

Because Slune is French firm, you will find all documents and messages in French. Other translations are welcome.

Anyway, because English is the language of programming, the code, including variable names and comments, are in English.

:fr: Une version française de ce document se trouve ici.

Installation

Installation is done using npm install command:

$ npm install --save-dev pm-exec

If you prefer using yarn:

$ yarn add -D pm-exec

Usage

Let's say you have a package.json containing those scripts:

{
  "scripts": {
    "test": "npm run test:lint && npm run test:dep && npm run test:unit && npm run test:integration",
    "test:lint": "eslint 'src/**/*.ts'",
    "test:dep": "depcheck",
    "test:unit": "nyc mocha 'src/**/*.spec.ts'",
    "test:integration": "cd __test__ && npm install && npm test"
  }
}

Then, another developer wants to work on it, but he prefers using pnpm. He will run pnpm test to execute the tests. Unfortunately, this command will execute npm to run test:lint, test:dep and test:unit, which, if it is a little bit annoying, does not really matter. But it will also use npm to run test:integration which is installing dependencies of a test project. This is more problematic as it will loose all the advantages of pnpm and duplicate the cached dependencies.

If pm-exec is installed, you can change your package.json to the following:

{
  "scripts": {
    "test": "pm-exec run test:lint && pm-exec run test:dep && pm-exec run test:unit && pm-exec run test:integration",
    "test:lint": "eslint 'src/**/*.ts'",
    "test:dep": "depcheck",
    "test:unit": "nyc mocha 'src/**/*.spec.ts'",
    "test:integration": "cd __test__ && pm-exec install && pm-exec test"
  }
}

Now, if you want to run yarn test, then yarn will also be used to execute test:lint, test:dep, test:unit and test:integration. And it will also be used in test:integration to execute install and test.

Issues, questions, contributions

Even though we cannot guarantee a response time, please feel free to file an issue if you have any question or problem using the package. Pull Requests are also welcome.