A standalone function that you could include in your scripting projects to help determine which user ran a script and what actions it has performed. It is designed to output the information into a Google sheet – Date/Time, User, Action.
Source: The Gift of Script: Log actions performed by a user running a script
I use Google Apps Script to support staff and students in my job. I enjoy dabbling with creating tools to help with automation and I freely share my learning experiences on my blog, where I also have a number of useful Google Add-ons: www.pbainbridge.co.uk