Most often developers would have to debug the minified Fiori Applications. The SAP Fiori Diagnostic tools provide an easy way to convert a project from minified version to a regular Fiori App.
Your shortcuts to memorize:Windows: Ctrl + Alt + Shift + s
Mac: Ctrl+ Opt + Shift + s
Using the above keyboard shortcuts one could launch the SAPUI5 Diagnostics tools. Use the toggle button in ‘Debug Sources’ to activate debugging and load the non-minified version of Fiori Project.
Project structure with Debug Sources: OFF