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    This package has been deprecated

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    This package is no longer maintained, and moved to @hackerrank/firepad. Contact developers@hackerrank.com to know more.


    1.6.28-alpha • Public • Published

    Firepad Build Status Coverage Status Version

    Firepad is an open-source, collaborative code and text editor. It is designed to be embedded inside larger web applications.

    Join our Firebase Google Group to ask questions, request features, or share your Firepad apps with the community.

    Table of Contents

    Getting Started With Firebase

    Firepad requires Firebase in order to sync and store data. Firebase is a suite of integrated products designed to help you develop your app, grow your user base, and earn money. You can sign up here for a free account.

    Live Demo

    Visit firepad.io to see a live demo of Firepad in rich text mode, or the examples page to see it setup for collaborative code editing.

    a screenshot of demo.firepad.io including a picture of two cats and a discussion about fonts

    Downloading Firepad

    Firepad uses Firebase as a backend, so it requires no server-side code. It can be added to any web app by including a few JavaScript files:

      <!-- Firebase -->
      <script src="https://www.gstatic.com/firebasejs/5.5.4/firebase.js"></script>
      <!-- CodeMirror -->
      <script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.17.0/codemirror.js"></script>
      <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.17.0/codemirror.css"/>
      <!-- Firepad -->
      <link rel="stylesheet" href="https://cdn.firebase.com/libs/firepad/1.5.3/firepad.css" />
      <script src="https://cdn.firebase.com/libs/firepad/1.5.3/firepad.min.js"></script>

    Then, you need to initialize the Firebase SDK and Firepad:

    <body onload="init()">
      <div id="firepad"></div>
        function init() {
          // Initialize the Firebase SDK.
            apiKey: '<API_KEY>',
            databaseURL: 'https://<DATABASE_NAME>.firebaseio.com'
          // Get Firebase Database reference.
          var firepadRef = firebase.database().ref();
          // Create CodeMirror (with lineWrapping on).
          var codeMirror = CodeMirror(document.getElementById('firepad'), { lineWrapping: true });
          // Create Firepad (with rich text toolbar and shortcuts enabled).
          var firepad = Firepad.fromCodeMirror(firepadRef, codeMirror,
              { richTextShortcuts: true, richTextToolbar: true, defaultText: 'Hello, World!' });


    Firepad supports rich text editing with CodeMirror and code editing via Ace. Check out the detailed setup instructions at firepad.io/docs.


    You can find some Firepad examples here.


    If you'd like to contribute to Firepad, please first read through our contribution guidelines. Local setup instructions are available here.

    Repo Structure

    Here are some highlights of the directory structure and notable source files:

    • dist/ - output directory for all files generated by grunt (firepad.js, firepad.min.js, firepad.css, firepad.eot).
    • examples/ - examples of embedding Firepad.
    • font/ - icon font used for rich text toolbar.
    • lib/
      • firepad.js - Entry point for Firepad.
      • text-operation.js, client.js - Heart of the Operation Transformation implementation. Based on ot.js but extended to allow arbitrary attributes on text (for representing rich-text).
      • annotation-list.js - A data model for representing annotations on text (i.e. spans of text with a particular set of attributes).
      • rich-text-codemirror.js - Uses AnnotationList to track annotations on the text and maintain the appropriate set of markers on a CodeMirror instance.
      • firebase-adapter.js - Handles integration with Firebase (appending operations, triggering retries, presence, etc.).
    • test/ - Jasmine tests for Firepad (many of these were borrowed from ot.js).


    npm i firepad-x

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    • bprogyan
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