Ionic 2 doesn't generate scss source maps. "" contains "null"

Could you help me to understand why Ionic 2 doesn’t generate scss source maps.
After “ionic serve” I’m navigating to www/build folder, there is but it contains null instead of generated sourcemaps, how to fix it? Anyone faced this problem?


I’m having the same issue. the content of is literally “null”.

It seems like the task lint never finishes but the process is stopped… I’m looking further into it as well.

Cordova CLI: 6.5.0
Ionic Framework Version: 3.0.1
Ionic CLI Version: 2.2.2
Ionic App Lib Version: 2.2.1
Ionic App Scripts Version: 1.2.5
ios-deploy version: Not installed
ios-sim version: Not installed
OS: Windows 10
Node Version: v6.9.2
Xcode version: Not installed

Debug on Serve.

[ DEBUG! ]  generateSourceMap set to true  MEM: 126.0MB
[ DEBUG! ]  sourceMapType set to source-map  MEM: 126.0MB

[10:39:59]  sass started ... MEM: 838.6MB
[ DEBUG! ]  sass outFile: C:\dev\mobile.root\www\build\main.css  MEM: 838.6MB
[ DEBUG! ]  sass includePaths:
             MEM: 838.6MB

[ DEBUG! ]  sass moduleDirectories: 222  MEM: 838.6MB
[ DEBUG! ]  sass userSassVariableFiles: 1  MEM: 838.6MB
[ DEBUG! ]  sass componentSassFiles: 182  MEM: 838.6MB
[ DEBUG! ]  sass, start postcss/autoprefixer  MEM: 839.5MB
[ DEBUG! ]  sass: postcss/autoprefixer completed  MEM: 841.0MB
[ DEBUG! ]  sass start write output: C:\dev\mobile.root\www\build\main.css  MEM: 841.0MB
[ DEBUG! ]  sass saved output: C:\dev\mobile.root\www\build\main.css  MEM: 837.4MB
[ DEBUG! ]  sass start write css map: C:\dev\mobile.root\www\build\  MEM: 837.4MB
[10:40:00]  sass finished in 964 ms MEM: 837.4MB
[10:40:00]  postprocess started ... MEM: 837.4MB
[10:40:00]  postprocess finished in 1 ms MEM: 837.5MB
[10:40:00]  lint started ... MEM: 837.5MB
[ DEBUG! ]  worker created, taskModule: lint, pid: 17068  MEM: 837.7MB
[ DEBUG! ]  sass saved css map: C:\dev\mobile.root\www\build\  MEM: 837.7MB

[10:40:02]  dev server running: http://localhost:8100/
[ DEBUG! ]  worker exited, taskModule: lint, pid: 17068  MEM: 838.1MB

I am having the same issue, not able to working it out