Index: gc_core/js/helpers.js
==================================================================
--- gc_core/js/helpers.js
+++ gc_core/js/helpers.js
@@ -30,10 +30,19 @@
     } else {
         console.error(sMsg);
     }
 }
 
+function inspect (o) {
+    let sMsg = "__inspect__: " + typeof o;
+    for (let sParam in o) {
+        sMsg += "\n" + sParam + ": " + o.sParam;
+    }
+    sMsg += "\n" + JSON.stringify(o) + "\n__end__";
+    echo(sMsg);
+}
+
 
 // load ressources in workers (suggested by Mozilla extensions reviewers)
 // for more options have a look here: https://gist.github.com/Noitidart/ec1e6b9a593ec7e3efed
 // if not in workers, use sdk/data.load() instead
 function loadFile (spf) {
@@ -74,16 +83,16 @@
     for (let [k, v] of m) {
         obj[k] = v;
     }
     return obj;
 }
+
 
 if (typeof(exports) !== 'undefined') {
-    // Used for Grammalecte library.
-    // In content scripts, these variable are directly reachable
     exports.setLogOutput = setLogOutput;
     exports.echo = echo;
     exports.logerror = logerror;
+    exports.inspect = inspect;
     exports.loadFile = loadFile;
     exports.objectToMap = objectToMap;
     exports.mapToObject = mapToObject;
 }