diff --git a/lib/process/processWrapper.js b/lib/process/processWrapper.js
index e2a705eb9..6ec77409d 100644
--- a/lib/process/processWrapper.js
+++ b/lib/process/processWrapper.js
@@ -11,6 +11,15 @@ process.chdir = (...args) => {
 };
 
 class ProcessWrapper {
+
+  /**
+   * Class from which process extend. Should not be instantiated alone.
+   * Manages the log interception so that all console.* get sent back to the parent process
+   * Also creates an Events instance. To use it, just do `this.event.[on|request]`
+   *
+   * @param {Options}     _options    Nothing for now
+   * @return {ProcessWrapper}   Do not instantiate this alone. Use it to extend
+   */
   constructor(_options) {
     this.interceptLogs();
     this.events = new Events();
@@ -20,16 +29,19 @@ class ProcessWrapper {
     const context = {};
     context.console = console;
 
-    context.console.log = this.log.bind(this, 'log');
-    context.console.warn = this.log.bind(this, 'warn');
-    context.console.info = this.log.bind(this, 'info');
-    context.console.debug = this.log.bind(this, 'debug');
-    context.console.trace = this.log.bind(this, 'trace');
-    context.console.dir = this.log.bind(this, 'dir');
+    context.console.log = this._log.bind(this, 'log');
+    context.console.warn = this._log.bind(this, 'warn');
+    context.console.info = this._log.bind(this, 'info');
+    context.console.debug = this._log.bind(this, 'debug');
+    context.console.trace = this._log.bind(this, 'trace');
+    context.console.dir = this._log.bind(this, 'dir');
   }
 
-  log(type, ...messages) {
-    if (messages[0].indexOf('hard-source')) {
+  _log(type, ...messages) {
+    const isHardSource = messages.some(message => {
+      return (typeof message === 'string' && message.indexOf('hard-source') > -1);
+    });
+    if (isHardSource) {
       return;
     }
     process.send({result: constants.process.log, message: messages, type});