feat(react): add initial react code. (#16748)

react/src/index.ts

@@ -1,3 +1,26 @@
-export { Delegate } from './react-framework-delegate';
-export * from './apis/apis';
-export * from './utils/wc-shim';
+import { addIcons } from 'ionicons';
+import { ICON_PATHS } from 'ionicons/icons';
+import { IonicConfig } from '@ionic/core';
+import { defineCustomElements } from '@ionic/core/loader';
+
+export * from './components';
+
+export interface IonicGlobal {
+  config?: any;
+  ael?: (elm: any, eventName: string, cb: (ev: Event) => void, opts: any) => void;
+  raf?: (ts: number) => void;
+  rel?: (elm: any, eventName: string, cb: (ev: Event) => void, opts: any) => void;
+}
+
+export interface IonicWindow extends Window {
+  Ionic: IonicGlobal;
+}
+
+export function registerIonic(config: IonicConfig = {}) {
+  const win: IonicWindow = window as any;
+  const Ionic = (win.Ionic = win.Ionic || {});
+  addIcons(ICON_PATHS);
+
+  Ionic.config = config;
+  defineCustomElements(window);
+}