run-multiple-node-scripts-concurrently.md

Run Multiple Node Scripts Concurrently

The concurrently npm package is a CLI for concurrently running multiple commands or scripts. This is great for working in the context of a web server development where you often need several pieces of infrastructure running locally at once.

Assuming you have the concurrently package installed and there are several dev scripts in your package.json, here is one way this could look:

{
  "scripts": {
    "dev": "concurrently \"npm run dev:next\" \"npm run dev:inngest\" \"npm run dev:mailhog\"",
    "dev:next": "next dev",
    "dev:inngest": "pnpx inngest-cli@latest dev",
    "dev:mailhog": "mailhog",
  }
}

Running npm run dev would start a process that runs all three commands and combines their output.

A shorthand way of writing this since these commands all have the same prefix is:

{
  "scripts": {
    "dev": "concurrently \"npm:dev:*\"",
    "dev:next": "next dev",
    "dev:inngest": "pnpx inngest-cli@latest dev",
    "dev:mailhog": "mailhog",
  }
}