Inverted dep tree generator. Nodes higher up on the tree are dependencies of their child nodes.

inv-deps.js

const assert = require('assert');
const path = require('path');
const fs = require('fs');
const {spawnSync} = require('child_process');

const deps = {};
const dependedBy = {};

function getDependencies(packageJsonFile) {
  assert(packageJsonFile);

  const pkg = JSON.parse(fs.readFileSync(packageJsonFile));
  const {dependencies = {}} = pkg;
  const ret = {};

  Object.entries(dependencies).forEach(([name, location]) => {
    if (location.includes('file:')) {
      ret[name] = deps[name] || {};

      dependedBy[name] = dependedBy[name] || {};
      dependedBy[name][pkg.name] = dependedBy[pkg.name] || {};
    }
  });

  deps[pkg.name] = ret;
}

function sh(command) {
  const parts = command.split(' ').map((part) => part.trim()).filter((part) => !!part);
  const prog = parts[0];
  const args = parts.splice(1);
  console.log(`$ ${prog} ${args.join(' ')}`);
  const {error, status, stdout, stderr} = spawnSync(prog, args, {shell: true});
  if (error) {
    console.error(stderr.toString());
    throw error;
  }

  if (status !== 0) {
    console.error(stderr.toString());
    throw new Error(`${prog} exited with code ${status}`);
  }

  const logout = stdout.toString().trim();
  const errout = stderr.toString().trim();
  return logout !== '' ? logout : errout;
}

const rootDir = sh('git rev-parse --show-toplevel');
const ignore = '! -path "*node_modules*" ! -path "*dist*" ! -path "*assets*"';
const packages = sh(`find ${rootDir} -name "package.json" ${ignore}`)
  .split('\n').filter((x) => !!x);
packages.forEach(getDependencies);

console.log(JSON.stringify(dependedBy, null, 4));