Count how many direct dependencies a monorepo has.

direct_deps_count.js

const { readdir } = require('fs/promises');
const { join } = require('path');
const fs = require('fs');
const { set } = require('date-fns');

const readdirRecursive = async dir => {
  const files = await readdir(dir, { withFileTypes: true });

  const paths = files.map(async file => {
    const path = join(dir, file.name);

    if (file.isDirectory()) return await readdirRecursive(path);

    return path;
  });

  return (await Promise.all(paths)).flat(Infinity);
}

(async () => {
  const files = await readdirRecursive('packages')
  const packageFiles = files.filter(f => 
    f.includes('package.json') && 
    !f.includes('node_modules') && 
    !f.includes('.next')
  )

  const devDeps = new Set()
  const deps = new Set()
  ['./package.json', ...packageFiles].forEach(path => {
    const json = JSON.parse(fs.readFileSync(path))

    function pushToSet(dependencies, set) {
      Object.entries(dependencies ?? {})
        .forEach(([key, value]) => {
          const v = `${key}: ${value}`
          set.add(v)
        })
    }

    pushToSet(json.dependencies, deps)
    pushToSet(json.devDependencies, devDeps)
  })

  console.log('Dev Dependencies', devDeps)

  console.log('Dependencies', deps)

})()