ghsyeung

/// <reference path="../../tools/typings/firebase/firebase.d.ts"/>
module Chat {
    class ChatMessage {
        constructor(public name:string, public text:string) {
        }
    }

    export class ChatEngine {
        private static baseUrl = "<Your Firebase URL>";
        private firebase;

ghsyeung

interface FirebaseQuery {
  /**
   * Listens for data changes at a particular location.
   */
  on(eventType: string, callback: (dataSnapshot: FirebaseDataSnapshot, prevChildName?: string) => void, cancelCallback?: (error: any) => void, context?: Object): (dataSnapshot: FirebaseDataSnapshot, prevChildName?: string) => void;
}

interface Firebase extends FirebaseQuery {
  /**
   * Generates a new child location using a unique name and returns a Firebase reference to it.

ghsyeung

.

ghsyeung

Both approaches from https://github.com/yarnpkg/yarn/issues/1326

ghsyeung

import fetch from "fetch";

class WebScraper {
  public download(link) {    
    const page = fetch(link);
    if (page.status === "OK") {
      this.cache.add(link, page);
    } else {
      this.scheduler.schedule(link);
    }