Javascript - Webpack

AS the name suggests, I just started to look over the source codes like js and css and Under the file app.a92c5074dafac0cb6365.js I got a commented .map file. I just downloaded it and searched for flag string and got the password.

I took literally more than a hour to solve it, I went to the file first but I didn't searched for string flag but instead password and so much more. The recon is too much deeper than the solution.