What you want to do is parse the source maps. This has nothing to do with web browsers. All you need to do is translate the minified reference into the unminified resource.
If you have any experience with NodeJS there is already a package that does this for you.
https://github.com/mozilla/source-map/
To install the library
npm install -g source-map
or
yarn global add source-map
Create a file named “issue.js”
fs = require('fs');
var sourceMap = require('source-map');
var smc = new sourceMap.SourceMapConsumer(fs.readFileSync("./app.min.js.map","utf8"));
console.log(smc.originalPositionFor({line: 1, column: 3284}));
Run the file with node
node issue.js
It should output the location in the original file to the console for first line from the stack trace.
Note: I tell you install source-map globally for ease of use, but you could create a node project that does what you need and installs it locally.