Is it possible to run package.json scripts from a Node script?

Question

I have several task in my package.json like:

"scripts": {
    "test": "jest",
    "test:ci": "jest --runInBand --no-cache --watch false --coverage true",
    "test:codecov": "codecov",
    "tsc:check": "tsc --noEmit",
    "prettier:check": "pretty-quick --staged"
    .
    .
    . // a lot more here
}

I am trying to build a build script that depends on those tasks but write it as a new script in package.json is too verbose and hard to read.

Is there some way to run those scripts from a build.js file? so I can chain/redo those tasks and also get some error handling.

Have you tried to just run npm run <script_name> in your build.js file? — Quoc-Anh Nguyen
– Quoc-Anh Nguyen, Commented Jan 23, 2019 at 8:49
Correct, it's bash indeed. You have to write code to run script bash const process = require('child_process'); process.exec('npm run ...') — Quoc-Anh Nguyen
– Quoc-Anh Nguyen, Commented Jan 23, 2019 at 8:54

distante · Accepted Answer · 2019-01-23 09:32:33Z

Based on @anh-nguyen comment I did this initial raw structure on how to be able to do what I wanted I hope this helps somebody.

Notice that instead of process and process.exec I am using shelljs because I already had it as dependency but you could change them if needed.

// tslint:disable:no-string-literal
const shell = require('shelljs');
const path = require('path');
const rootDir = process.cwd();
const distBundlesDir = path.join(rootDir, 'dist-bundles');
const objectWithRawScripts = require(path.join(rootDir, 'package.json')).scripts;

const packageScripts = {
  build: objectWithRawScripts['build'],
  prettierCheck: objectWithRawScripts['prettier:check'],
  tscCheck: objectWithRawScripts['tsc:check'],
};

function runScript(scriptToRun) {
  try {
    shell.echo(`Running ${scriptToRun}`);
    shell.exec(scriptToRun);
  } catch (e) {
    shell.echo('!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!');
    shell.echo(`there was an error with ${scriptToRun}`);
    console.error(e);
    shell.echo('!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!');
    return false;
  }
  return true;
}

shell.echo('Init Tasks');
runScript(packageScripts.prettierCheck);
runScript(packageScripts.tscCheck);

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