--- a/devtools/client/shared/browser-loader.js
+++ b/devtools/client/shared/browser-loader.js
@@ -65,16 +65,19 @@ function BrowserLoader(baseURI, window) 
 
       if (!uri.startsWith(baseURI) && !isBrowserDir) {
         return devtools.require(uri);
       }
 
       return require(uri);
     },
     globals: {
+      // Allow modules to use the window's console to ensure logs appear in a
+      // tab toolbox, if one exists, instead of just the browser console.
+      console: window.console,
       // Make sure 'define' function exists. This allows reusing AMD modules.
       define: function(callback) {
         callback(this.require, this.exports, this.module);
         return this.exports;
       }
     }
   };