Below are the most useful tools à
Install the plugin, connect to your organization and click on Retrieve Jscript Webresources, it will list all the JScript Web resources found.
Click on Scan
It will list down all the issues found.
One common change that we need to do across all our JScript is to pass the ExecutionContext from Form as well as Fields (and Ribbon) events. Script Finder makes it extremely easy to find them out.
Click on Find Scripts usage and it will generate a report with all the details as shown below
Now we can follow the generated report and directly make the change to the form, field, and ribbon instead of searching for it manually.
Happy Upgrading !!