react-native-web-browser-app
v0.2.0
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Fully-featured cross-platform Web Browser, made in React Native
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React Native Web Browser App
An open-source, extensible cross-platform (mobile and desktop) web browser made in React Native!
Motivation
My masochistic hobby project is building a web browser for browsing foreign-language websites: LinguaBrowse iOS. It is a basic minimal clone of iOS Safari that does a lot of Natural Language Processing and JS injection, manages a vocabulary list, and handles In-App Purchases. It was written imperatively in Swift, which ultimately brought my productivity to a standstill, as I found UIs much harder to build in UIKit than in React, and state much harder to manage in an imperative coding style.
Last year I tried to address these issues by porting LinguaBrowse to React Native macOS, but ultimately gave up developing it due to the premature state of React Native macOS: I was unable to code-share with iOS; had to make most of the UI on the native side (with lots of message-passing over the bridge) due to incomplete React components; and hot-reloading didn't work. But it was fun and showed great promise.
So here I am foolishly building the same browser for the third time, and this time the landscape of React Native and cross-platform app development is looking more exciting than ever:
- React Native has Fast Refresh and auto-linking;
- Apple have produced Catalyst (meaning that I don't have to use React Native macOS);
- Microsoft are driving desktop platforms on React Native (meaning that a new React Native macOS is available anyway);
- JSI and turbo-modules are on its way;
- Redux Toolkit makes Redux bearable with TypeScript, and;
- Expo are doing great work driving the ecosystem with Unimodules, React Navigation, and more.
Given all this momentum behind React Native, I believe that we now have the maturity of tools to pull off a cross-platform, declarative UI-based web browser in a single code-base. So rather than attempt it all on my own and couple the code to LinguaBrowse, I've decided to open-source the 'browser' aspect of LinguaBrowse and maintain any of my brand-specific stuff in a separate fork. In fact, with adequate extension APIs, a fork may not even be needed at all.
Scope
The browser should:
- have a UI that is no less functional than that of Firefox's;
- support at least iOS, Android, macOS, and Windows from one codebase;
- allow consumers to swap out the WebView for another one (for now, I'm using my fork of
react-native-webview
);
To be clear: This project is purely focused on building a browser UI, and forwarding user actions to a WebView. We are not trying to rebuild a browser engine here – just the UI around it.
Roadmap
- [X] Functional navigation buttons (back, forward, stop, refresh)
- [X] Functional URL bar (can navigate to URL inputs and updates text upon page redirect)
- [X] Rotation
- [X] Bar retraction
- [X] Intelligent URL vs. search query determination in search bar
- [ ] Search suggestions
- [ ] Bars snapping to fully retracted/revealed upon gesture release
- [ ] Tabs
- [ ] History
- [ ] Browsing-state persistence
- [ ] Bookmarks
- [ ] Reading list
- [ ] Page-specific actions
- [ ] Branded app-specific actions (e.g. JS injection, popup blocking, whatever)
Prior art
I have been talking a fair bit about browser-building with the Cliqz team, as they are doing some exciting work (see these stellar blog posts) in this space right now.
Cliqz provides superb prior art – it would be great (in my opinion) if this project could converge with it in some way to provide a single, declarative UI codebase that could be used for all platforms. They already use a cross-platform core. In fact, they have experimented with a React Native UI at least for the purposes of producing a Windows app, and I shall have to ask what brought that experiment to an end. It could be that this project could feed into cliqz-s
(see below), or vice-versa.
Cliqz give good reasons as to why they use Firefox as a basis rather than Chromium.
cliqz-oss/browser-android
: an Android web browser UI built in Java, based on Firefox for Android(?). Is the UI for the Cliqz Play Store Android app.cliqz/user-agent-ios
: an iOS web browser UI built in Swift, based on Firefox for iOS. Is the UI for the Cliqz AppStore iOS app.cliqz-oss/cliqz-s
: Cliqz's prototype Windows browser, written in React Native Windows (not meant for production).cliqz-oss/browser-f
: Cliqz's production desktop browser (Windows & Mac), based on Firefox desktop. There are a mixture of languages in the source: C++ and JS, at least. I'm not really sure what the dominant UI language is.cliqz-oss/browser-core
: Cliqz's set of cross-platform (desktop & mobile) core modules such as their search UI.- Mozilla Application Services, recommended as a state storage solution by Krzysztof Modras of Cliqz – particularly Places DB (explained by Krzysztof here).