How to Run Multiple Npm Scripts in Parallel

How can I run multiple npm scripts in parallel?

Use a package called concurrently.

npm i concurrently --save-dev

Then setup your npm run dev task as so:

"dev": "concurrently --kill-others \"npm run start-watch\" \"npm run wp-server\""

Running NPM scripts sequentially

Invoke these scripts via npm run and chain them with double ampersand &&:

npm run pre-build && npm run build_logic && npm run post_build && npm run exit

Explanation:

• Use && (double ampersand) for sequential execution.
• Use & (single ampersand) for parallel execution.

How can I run multiple NPM commands with a single NPM Command on Windows

Here's what I use: npm-run-all(this is cross-platform). They allow you to run your processes/commands parallelly and sequentially (-p or -s).

"scripts": {
    "build-css": "node-sass-chokidar src/ -o src/ --importer=node_modules/node-sass-tilde-importer",
    "watch-css": "npm run build-css && node-sass-chokidar src/ -o src/ --watch --recursive",
    "start-js": "react-scripts start",
    "start": "npm-run-all -p watch-css start-js",
    // ... and much more
}

This is working fine for me in both windows and mac. Try it, hope this is helpful.

How can I run multiple npm scripts in parallel?

Use a package called concurrently.

npm i concurrently --save-dev

Then setup your npm run dev task as so:

"dev": "concurrently --kill-others \"npm run start-watch\" \"npm run wp-server\""

I'm having an issue running multiple npm scripts using parallel shell - code: 'ERR_INVALID_ARG_TYPE'

you can use npm-run-all for this instead of parallel shell
install npm-run-all by using $ npm install npm-run-all --save-dev then change the srcipt as
"watch:all": "npm-run-all --parallel watch:scss lite "
Its Working for me :-

How to run multiple npm scripts both on unix and windows

You can run commands synchronously by using && in both Windows and Unix environments.

So ...

{
  "scripts": {
    "installnpm": "npm i",
    "installbower": "bower i",
    "rimraf":"rimraf dist"
    "lernabootstrap": "lerna bootstrap",
    "start":"nodemon myApp.js",
    "all": "npm run installnpm && npm run installbower && npm run start"
  }
} 

so then you could run npm run all to execute all those npm scripts synchronously

Here is a answer that answers it for Windows and this answer is useful as well.

Yarn run multiple scripts in parallel

There is a difference between using & and &&. Using & will run scripts in parallel, using && will run scripts one after the other.

package.json:

{
    "parallel": "yarn script1 & yarn script2",
    "serial": "yarn script1 && yarn script2",
    "script1": "... some script here",
    "script2": "... some there script here"
}

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