ember-cli/ember-cli — pull request #2830 by ef4 (2014-12-24 05:01:17+00:00)
Title: Extensible sourcemap configuration

Before this change, `app.options.sourcemaps` was just a list of file extensions. This changes it to be an object, so that it has room for future source-map related options, and so that we can offer a simple `enabled` flag.

My intent is that this will be a stable API that other addons can use. Any preprocessor that can generate sourcemaps should respect `app.options.sourcemaps.enabled` and `app.options.sourcemaps.extensions`.

broccoli-sourcemap-concat, broccoli-uglify-sourcemap, and ember-browserify have already been updated to use this convention.