BundlerPattern for appsscripts libraries

Bundle.js

/**
 * Should be listed first in the list. Creates the `Import` object and adds properties to it
 */

// create a simple object where we can add namespaces
const Import = Object.create(null);

(function (exports) {
  // define your stuff in an iife …
  
  // … a class
  class Namespace {
    constructor (id) {
      this.id = id;
    }
  }
  
  // … methods, or whatver
  const method = () => {};

  // add them to the exports variable
  exports.Namespace = Namespace;
  exports.method = method;

})(Import);

// invoke the iife with the `Import` global

Libary.js

/**
 * This is where you write functions where other devs can interact with your library
 * You're able to "import" stuff from the bundle
 */

// Since Bundle is the first file, you'll have the `Import` object:
// "import" stuff you need throughout this file here
const {Namespace} = Import;

function fromId(id) {
  return Namespace.fromId(id);
}

function doSomething (id) {
  const ns = Namespace.fromId(id);

  // import stuff from the bundle that you need for just this function here
  const {method} = Import;
  return method(id);
}