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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"CSS Sourcemap is always empty","articleBody":"My Angular-Cli version is ```1.0.0-beta.26```\r\nHere is my ```angular-cli.json```:\r\n```\r\n{\r\n  \"project\": {\r\n    \"version\": \"1.0.0-beta.26\",\r\n    \"name\": \"test\"\r\n  },\r\n  \"apps\": [\r\n    {\r\n      \"root\": \"src\",\r\n      \"outDir\": \"dist\",\r\n      \"assets\": [\r\n        \"assets\",\r\n        \"favicon.ico\"\r\n      ],\r\n      \"index\": \"index.html\",\r\n      \"main\": \"main.ts\",\r\n      \"test\": \"test.ts\",\r\n      \"tsconfig\": \"tsconfig.json\",\r\n      \"prefix\": \"app\",\r\n      \"mobile\": false,\r\n      \"styles\": [\r\n        \"styles.scss\"\r\n      ],\r\n      \"scripts\": [],\r\n      \"environments\": {\r\n        \"source\": \"environments/environment.ts\",\r\n        \"dev\": \"environments/environment.ts\",\r\n        \"prod\": \"environments/environment.prod.ts\"\r\n      }\r\n    }\r\n  ],\r\n  \"e2e\": {\r\n    \"protractor\": {\r\n      \"config\": \"./protractor.conf.js\"\r\n    }\r\n  },\r\n  \"test\": {\r\n    \"karma\": {\r\n      \"config\": \"./karma.conf.js\"\r\n    }\r\n  },\r\n  \"defaults\": {\r\n    \"styleExt\": \"scss\",\r\n    \"prefixInterfaces\": false,\r\n    \"inline\": {\r\n      \"style\": false,\r\n      \"template\": false\r\n    },\r\n    \"spec\": {\r\n      \"class\": false,\r\n      \"component\": true,\r\n      \"directive\": true,\r\n      \"module\": false,\r\n      \"pipe\": true,\r\n      \"service\": true\r\n    }\r\n  }\r\n}\r\n```\r\nAnd Here is my ```styles.scss```\r\n\r\n```\r\nh1 {\r\n    font-size: 20px;\r\n}\r\n```\r\n\r\nWhen I type ```ng serve --extract-css=true``` or ```ng build  --extract-css=true```, the ```styles.bundle.map``` is always empty like: \r\n```\r\n{\"version\":3,\"sources\":[],\"names\":[],\"mappings\":\"\",\"file\":\"styles.bundle.css\",\"sourceRoot\":\"\"}\r\n```\r\n\r\nDoes anyone have the same issue with me ? Or maybe this is expected behavior ? ","author":{"url":"https://github.com/changLiuUNSW","@type":"Person","name":"changLiuUNSW"},"datePublished":"2017-01-24T12:15:26.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":16},"url":"https://github.com/4199/angular-cli/issues/4199"}