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A browser extension that makes the "go/" hostname work for any go links implementation. Built for easy self-hosting.

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Trotto Go Links Browser Extension

This repository contains all the code used in the Trotto go links Chrome extension and the Trotto go links Firefox extension.

The build system for this extension is designed to make it easy to build the extension to work with any go links instance (whether Trotto or any other go links implementation) and deploy it via chrome.google.com and/or addons.mozilla.org.

A "go links instance" is any application that implements the concept of go links, allowing people to create go links like go/roadmap or go/allhands and share them with others in their organization. If a go links instance is hosted at, say, go.example.com, go/roadmap would be resolved through go.example.com/roadmap. This extension does the request rewriting needed to make go/roadmap redirect to go.example.com/roadmap and ultimately to the destination for that go link.

Currently the extension supports Chrome and Firefox. If you're interested in support for other browsers, please let us know by submitting an issue.

Architecture

The browser-specific code is confined to API definitions in src/apis. The extension background page and popup script have separate entry points for each browser, and each entry point uses dependency injection to provide the browser-specific API implementation to the browser-agnostic code. (h/t to Sergey Yavnyi at Grammarly for his great talk on how Grammarly does cross-browser extension development.)

The yarn build and yarn dev commands described below use webpack to bundle only the JavaScript needed for the specified browser and use Grunt to prepare the other assets that are part of the extension, including merging the core manifest.json file with edition-specific and browser-specific overrides. The webpack configuration for these commands uses webpack.DefinePlugin to set the go links instance base URL in the code according to the provided instance argument.

Building the extension

In order to develop or build the extension, you'll need to have nvm and yarn installed.

Extension "editions"

The yarn dev and yarn build commands support three "editions" of the extension, beta, staging, and production. These editions can be used to roll out changes to smaller groups of users before deploying them to your main user base. Each edition has a distinct icon that makes it easier for a user to keep track of which edition they're using.

Build arguments

Both the yarn build and yarn dev commands described below require three arguments:

  1. edition, which is one of the editions described above
  2. browser, which is the browser you want to build for or develop against (chrome or firefox)
  3. instance, which is the full base URL for a go links instance (ex: https://trot.to)

Building for deployment

The yarn build command will build the extension to the dists/dist_{edition}_{browser}/ directory and zip it to dists/dist_{edition}_{browser}.zip.

From the root directory:

Chrome:

nvm use
yarn install
yarn build --edition=production --browser=chrome --instance=https://trot.to

Firefox:

nvm use
yarn install
yarn build --edition=production --browser=firefox --instance=https://trot.to

Building for development

The yarn dev command will build the extension to the dists/dist_{edition}_{browser}/ directory and watch for changes, recompiling when changes are detected. You can then load the unpacked extension (Chrome) or temporarily install the extension (Firefox) to test it.

From the root directory:

Chrome:

nvm use
yarn install
yarn dev --edition=production --browser=chrome --instance=https://trot.to

Firefox:

nvm use
yarn install
yarn dev --edition=production --browser=firefox --instance=https://trot.to

Specifying a go links instance

As described above, you can use the instance argument to build the extension for any go links instance. For example, to build a Firefox extension for a go links instance at https://latest-master.trotto.dev:

yarn build --edition=production --browser=chrome --instance=https://latest-master.trotto.dev

FAQs

Why does the extension open and immediately close a tab on installation?

Chrome has to be "taught" that go links are URLs and not search engine queries. Otherwise, typing "go/foo" just takes you to https://www.google.com/search?q=go%2Ffoo. So when the extension is installed, it automatically opens https://go/ in a new tab so Chrome learns that go should be treated as a hostname. The extension then quickly closes that tab so that it's not cluttering the window.

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A browser extension that makes the "go/" hostname work for any go links implementation. Built for easy self-hosting.

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