[angularjs] angular.min.js.map not found, what is it exactly?

When I load the page and check chrome console i find these errors: enter image description here

what exactly are map files in angular?

I did reference the angular.min.js but not the angular.min.js.map. I am using the angular 1.2 rc release by the way and I just started seeing these errors when i switched to this release.

ERRORS:
GET http://localhost:44786/Scripts/angular-route.min.js.map 404 (Not Found)       :44786/Scripts/angular-route.min.js.map:1
GET http://localhost:44786/Scripts/angular-animate.min.js.map 404 (Not Found) :44786/Scripts/angular-animate.min.js.map:1
GET http://localhost:44786/Scripts/angular-resource.min.js.map 404 (Not Found) :44786/Scripts/angular-resource.min.js.map:1
GET http://localhost:44786/Scripts/angular.min.js.map 404 (Not Found) :44786/Scripts/angular.min.js.map:1

This question is related to angularjs

The answer is


Monkey is right, according to the link given by monkey

Basically it's a way to map a combined/minified file back to an unbuilt state. When you build for production, along with minifying and combining your JavaScript files, you generate a source map which holds information about your original files. When you query a certain line and column number in your generated JavaScript you can do a lookup in the source map which returns the original location.

I am not sure if it is angular's fault that no map files were generated. But you can turn off source map files by unchecking this option in chrome console setting

enter image description here