docs(learned-lessons.md): improve learned lessons doc

docs/learned-lessons.md

@@ -4,12 +4,41 @@ This document list some issues and how they were solved
 
 ## Error in Karma test: Disconnected because no message in 10000 ms
 
+Add longer timeouts:
+
+```js
+module.exports = {
+    //how long does Karma wait for a browser to reconnect, 2000 is default
+    browserDisconnectTimeout: 60000,
+    //how long will Karma wait for a message from a browser before disconnecting from it, 10000 is default
+    browserNoActivityTimeout: 60000,
+}
+```
+
 http://alexeyhorn.com/javascript/karma/2017/05/31/fix-karma-disconnected-error.html
 
 ## Error in nighwatch/sellenium test: session deleted because of page crash
 
 Add the '--disable-dev-shm-usage' flag to the browser.
 
+```js
+module.exports = {
+  test_settings: {
+    chrome: {
+      desiredCapabilities: {
+        browserName: 'chrome',
+        'chromeOptions': {
+          'args': [
+            '--disable-dev-shm-usage',
+          ]
+        }
+      }
+    }
+  }
+}
+
+```
+
 https://svdoscience.com/2021-03-17/fix-session-deleted-page-crash-selenium-grid-chrome-docker
 
 ## Support for aliases in imports outside webpack cotnext
@@ -21,7 +50,7 @@ Add to package.json (for an alias to @):
 ```js
 "_moduleAliases": {
     "@": "src/"
-  }
+}
 ```
 
 ## Allow the use of import outside webpack