load_broccoli_tree.js

/* eslint-env node */
const Project = require('ember-cli/lib/models/project');
const CLI = require('ember-cli/lib/cli/cli');
const UI = require('console-ui');

const ui = new UI();
const cli = new CLI({ ui });
const project = Project.closestSync(__dirname, ui, cli);
const tree = require(`${project.root}/ember-cli-build`)({ project });
module.exports = tree;

print_tree.js

printTree(require('./load_broccoli_tree'));

/**
 * @param {import('broccoli-node-api').InputNode} node
 */
function printTree(node, seen = new Set(), depth = 0) {
  if (typeof node === 'string') {
    console.log('  '.repeat(depth), node);
    return;
  }
  // eslint-disable-next-line no-underscore-dangle
  const nodeInfo = node.__broccoliGetInfo__();
  if (seen.has(node)) {
    console.log('  '.repeat(depth), 'REF >', nodeLabel(nodeInfo));
    return;
  }
  seen.add(node);
  if (nodeInfo.nodeType === 'transform') {
    const { inputNodes } = nodeInfo;
    if (inputNodes.length > 0) {
      console.log('  '.repeat(depth), 'START', inputNodes.length, nodeLabel(nodeInfo));
      // flatten consecutive merge trees into one
      for (const child of inputNodes) {
        printTree(child, seen, depth + 1);
      }
      console.log('  '.repeat(depth), 'END', nodeLabel(nodeInfo));
    } else {
      console.log('  '.repeat(depth), nodeLabel(nodeInfo));
    }
  } else {
    console.log('  '.repeat(depth), nodeLabel(nodeInfo));
  }
}

/**
 * @param {import('broccoli-node-api').SourceNodeInfo} node
 */
function nodeLabel(node) {
  const name = node.nodeType === 'source' ? node.sourceDirectory : node.name;
  const { annotation } = node;
  if (annotation) {
    return `${name} ${annotation}`;
  }
  return name;
}