How to use @ui5/builder - 3 common examples

handleTask(extension) {
		if (!extension.metadata && !extension.metadata.name) {
			throw new Error(`Task extension ${extension.id} is missing 'metadata.name' configuration`);
		}
		if (!extension.task) {
			throw new Error(`Task extension ${extension.id} is missing 'task' configuration`);
		}
		const taskRepository = require("@ui5/builder").tasks.taskRepository;

		const taskPath = path.join(extension.path, extension.task.path);
		const task = require(taskPath); // throws if not found

		taskRepository.addTask(extension.metadata.name, task);
	}

return projectPreprocessor.processTree(tree).then((parsedTree) => {
		t.deepEqual(parsedTree.dependencies.length, 0, "Application project has no dependencies");
		const taskRepository = require("@ui5/builder").tasks.taskRepository;
		t.truthy(taskRepository.getTask("task.a"), "task.a has been added to the task repository");
	});
});

const log = require("@ui5/logger").getLogger("normalizer:projectPreprocessor");
const fs = require("graceful-fs");
const path = require("path");
const {promisify} = require("util");
const readFile = promisify(fs.readFile);
const parseYaml = require("js-yaml").safeLoadAll;
const typeRepository = require("@ui5/builder").types.typeRepository;

class ProjectPreprocessor {
	constructor() {
		this.processedProjects = {};
		this.configShims = {};
		this.collections = {};
		this.appliedExtensions = {};
	}

	/*
		Adapt and enhance the project tree:
			- Replace duplicate projects further away from the root with those closer to the root
			- Add configuration to projects
	*/
	async processTree(tree) {
		const queue = [{