diff --git a/src/shared/messages.js b/src/shared/messages.js
deleted file mode 100644
index 517fc4c..0000000
--- a/src/shared/messages.js
+++ /dev/null
@@ -1,19 +0,0 @@
-const receive = (win, callback) => {
-  win.addEventListener('message', (e) => {
-    let message;
-    try {
-      message = JSON.parse(e.data);
-    } catch (e) {
-      // ignore message posted by author of web page
-      return;
-    }
-
-    callback(message);
-  })
-}
-
-const send = (win, message) => {
-  win.postMessage(JSON.stringify(message), '*');
-}
-
-export { receive, send };
diff --git a/test/shared/messages.test.js b/test/shared/messages.test.js
deleted file mode 100644
index 0ebaf1a..0000000
--- a/test/shared/messages.test.js
+++ /dev/null
@@ -1,25 +0,0 @@
-import { expect } from "chai";
-import * as messages from '../../src/shared/messages';
-
-describe('messages', () => {
-  describe('#receive', () => {
-    it('received a message', (done) => {
-      messages.receive(window, (message) => {
-        expect(message).to.deep.equal({ type: 'vimvixen.test' });
-        done();
-      });
-      window.postMessage(JSON.stringify({ type: 'vimvixen.test' }), '*');
-    });
-  });
-
-  describe('#send', () => {
-    it('sends a message', (done) => {
-      window.addEventListener('message', (e) => {
-        let json = JSON.parse(e.data);
-        expect(json).to.deep.equal({ type: 'vimvixen.test' });
-        done();
-      });
-      messages.send(window, { type: 'vimvixen.test' });
-    });
-  });
-});