Build Firefox Addon

firefox/background.js

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+var app = {};
+
+// Generate referer uri
+app.generateReferer = function () {
+  var linkId = (1 + Math.random()).toString(36).substring(2, 12);
+  return `https://t.co/${linkId}`;
+}
+
+// Modify the referer to twitter
+app.modifyHeaders = function (details) {
+  var newRef = app.generateReferer();
+  var refExists = false;
+  for (var n in details.requestHeaders) {
+    refExists = details.requestHeaders[n].name.toLowerCase() == "referer";
+    if (refExists) {
+      details.requestHeaders[n].value = newRef;
+      break;
+    }
+  }
+  if (!refExists) {
+    details.requestHeaders.push({ name: "Referer", value: newRef });
+  }
+  return { requestHeaders: details.requestHeaders };
+}
+
+// Modify network requests
+browser.webRequest.onBeforeSendHeaders.addListener(
+  app.modifyHeaders,
+  {
+    urls: [
+      '*://*.medium.com/*',
+      '*://writingcooperative.com/*',
+      '*://psiloveyou.xyz/*',
+      '*://uxplanet.org/*',
+      '*://towardsdatascience.com/*',
+      '*://codeburst.io/*',
+      '*://*.gitconnected.com/*',
+      '*://itnext.io/*',
+      '*://entrepreneurshandbook.co/*',
+      '*://arcdigital.media/*',
+      '*://femsplain.com/*',
+      '*://fityourself.club/*',
+      '*://byrslf.co/*',
+      '*://blog.qz.com/*',
+      '*://bullshit.ist/*',
+      '*://*.pramp.com/*',
+      '*://uxdesign.cc/*',
+      '*://medium.muz.li/*',
+      '*://*.usejournal.com/*',
+      '*://timeline.com/*',
+      '*://substance.media/*',
+      '*://thebolditalic.com/*',
+      '*://thecreative.cafe/*',
+      '*://theascent.pub/*',
+      '*://ceoplaybook.io/*',
+      '*://dayoneperspective.com/*',
+      '*://eand.co/*',
+      '*://extranewsfeed.com/*',
+      '*://democracyguardian.com/*',
+      '*://*.issuevoter.org/*',
+    ]
+  },
+  [
+    'blocking',
+    'requestHeaders'
+  ]
+);

firefox/manifest.json

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+{
+    "name": "UnlimitedMedium",
+    "version": "3.5.0",
+    "description": "Read Medium for Free.",
+    "background": {
+        "scripts": [
+            "background.js"
+        ]
+    },
+    "permissions": [
+        "webRequest",
+        "webRequestBlocking",
+        "<all_urls>"
+    ],
+    "icons": {
+        "16": "icon16.png",
+        "48": "icon48.png",
+        "128": "icon128.png"
+    },
+    "manifest_version": 2
+}