docs(learned-lessons.md): document learned lessons

docs/learned-lessons.md

@@ -0,0 +1,39 @@
+# Learned lessons
+
+This document list some issues and how they were solved
+
+## Error in Karma test: Disconnected because no message in 10000 ms
+
+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.
+
+https://svdoscience.com/2021-03-17/fix-session-deleted-page-crash-selenium-grid-chrome-docker
+
+## Support for aliases in imports outside webpack cotnext
+
+Install the module-alias package - https://github.com/ilearnio/module-alias
+
+Add to package.json (for an alias to @):
+
+```js
+"_moduleAliases": {
+    "@": "src/"
+  }
+```
+
+## Allow the use of import outside webpack
+
+Install the @babel/register package - https://www.npmjs.com/package/@babel/register
+
+Add to the file where you want to use import, before any import statment:
+
+```js
+require('@babel/register')
+```
+
+## Use babel.config.js to support dynamic compiling rules
+
+babel.config.js replaces .babelrc and can have dynamic behavior