manually add loader forlder

loader/cdn.js

+
+module.exports = require('../dist/cjs/loader.cjs.js');
+module.exports.applyPolyfills = function() { return Promise.resolve() };

loader/index.cjs.js

+
+module.exports = require('../dist/cjs/loader.cjs.js');
+module.exports.applyPolyfills = function() { return Promise.resolve() };

loader/index.d.ts

+
+export * from '../dist/types/components';
+export interface CustomElementsDefineOptions {
+  exclude?: string[];
+  resourcesUrl?: string;
+  syncQueue?: boolean;
+  jmp?: (c: Function) => any;
+  raf?: (c: FrameRequestCallback) => number;
+  ael?: (el: EventTarget, eventName: string, listener: EventListenerOrEventListenerObject, options: boolean | AddEventListenerOptions) => void;
+  rel?: (el: EventTarget, eventName: string, listener: EventListenerOrEventListenerObject, options: boolean | AddEventListenerOptions) => void;
+}
+export declare function defineCustomElements(win: Window, opts?: CustomElementsDefineOptions): Promise<void>;
+export declare function applyPolyfills(): Promise<void>;

loader/index.es2017.mjs

+
+export * from '../dist/esm/polyfills/index.js';
+export * from '../dist/esm/loader.mjs';

loader/index.mjs

+
+(function() {
+  if (
+    // No Reflect, no classes, no need for shim because native custom elements
+    // require ES2015 classes or Reflect.
+    window.Reflect === undefined ||
+    window.customElements === undefined
+  ) {
+    return;
+  }
+  var BuiltInHTMLElement = HTMLElement;
+  window.HTMLElement = /** @this {!Object} */ function HTMLElement() {
+    return Reflect.construct(
+        BuiltInHTMLElement, [], /** @type {!Function} */ (this.constructor));
+  };
+  HTMLElement.prototype = BuiltInHTMLElement.prototype;
+  HTMLElement.prototype.constructor = HTMLElement;
+  Object.setPrototypeOf(HTMLElement, BuiltInHTMLElement);
+})();
+
+export * from '../dist/esm/polyfills/index.js';
+export * from '../dist/esm-es5/loader.mjs';

loader/node-main.js

+
+module.exports.applyPolyfills = function() { return Promise.resolve() };
+module.exports.defineCustomElements = function() { return Promise.resolve() };

loader/package.json

+{
+  "name": "hy-design-system-demo-loader",
+  "version": "0.0.1",
+  "typings": "./index.d.ts",
+  "module": "./index.mjs",
+  "main": "./index.cjs.js",
+  "node:main": "./node-main.js",
+  "jsnext:main": "./index.es2017.mjs",
+  "es2015": "./index.es2017.mjs",
+  "es2017": "./index.es2017.mjs",
+  "unpkg": "./cdn.js"
+}