Firefox Extension compatibility

[AndrewBastin]

This PR intends to introduce compatibility with Postwoman Firefox Extension

This adds a new NetworkStrategy to hook with the Firefox Content Script to run the query.

NOTE

Do NOT use the extension from the store to test the strategy, because, the extension is configured to only hook into the postwoman.io and postwoman.netlify.com domains. Other domains won't get hooked and hence won't get access to the extension hooks.

So, to test this PR, you have to clone the postwoman-firefox repo.

Then head into the manifest.json file and edit it to match this snippet below

 "content_scripts": [
    {
      "matches": [
        "*://*/*",
        "https://postwoman.io/",
        "https://postwoman.io/*",
        "https://postwoman.netlify.com/*",
        "https://postwoman.netlify.com/"
      ],
      "js": [ "index.js" ]
    }
  ],

Then run npm install and then npm run build.
NOTE: npm run build may fail on non-Unix compliant systems as it uses the cp command, if it fails, just copy the icons folder and the manifest.json to the dist folder

This will create a folder called dist with the generated code.

Then, open Firefox and navigate to about:debugging, select This Firefox and the click on Load Temporary Add-on... and then select the manifest.json file in the generated dist folder.

After this you can navigate to the Postwoman app in localhost and access it, you can check if the hook was successful or not by opening the console on the Postwoman app and checking for the log "Connected to the Postwoman Firefox Extension!" after load.

Once that is done, just fire a request anywhere and you will see that CORS restrictions won't be applied.

[ghost]

DeepCode's analysis on #aafb4d found:

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[TravisBuddy]

Hey @AndrewBastin,
Your changes look good to me!

View build log

TravisBuddy Request Identifier: 2c66d440-387f-11ea-b5ea-ed59922799f5

[TravisBuddy]

Hey @AndrewBastin,
Your changes look good to me!

View build log

TravisBuddy Request Identifier: 87996960-3887-11ea-b5ea-ed59922799f5