Node script to run NPM commands programatically. This example runs `npm list` and parses the output to get the currently installed versions of project dependencies.

dependencies.js

const fs = require('fs');
const util = require('util');
const exec = util.promisify(require('child_process').exec);

const package = require('../package.json');

const dependencies = Object.keys(packageData.dependencies).map((dep) => dep);

let promises = [];

if (dependencies && dependencies.length) {
  const filteredList = ['@wtf-ds/core', 'react', 'styled-components'];

  promises = filteredList.map(async (name) => {
    const { stdout } = await exec(`npm list --depth=0 ${name} | grep ${name}`);

    const idx = stdout.indexOf(name);
    const version = stdout.substring(idx + name.length + 1).replace('\n', '');

    return { name, version };
  });
}

Promise.all(promises).then((result) => {
  const data = JSON.stringify(result, null, 2);
  fs.writeFileSync('dependencies.json', data);
});

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