How to make Webstorm "Reformatting Source Code" to change double quotes to single quotes?

In Webstorm 2017.1, do the following:

1. Go to File -> Settings | Preferences
2. Choose Editor -> Code Style -> TypeScript
3. Select 'Punctuation' tab
4. Change: Use 'double' quotes to Use 'single' quotes. (Additionally, you can change 'in new code' to 'always')

there is no way to change this on auto-formatting in WebStorm 11; you can only use intentions here (hit Alt+Enter on quoted string, choose 'Replace double-quoted string with single-quoted string'. Note that in WebStorm 12 -2016.x it's possible to control the auto-generated quotes style (used for auto-imports, etc.) - Settings | Editor | Code Style | JavaScript | Other, Generated code/Quote marks.

Since 2017.1.*, it is Settings | Editor | Code Style | JavaScript | Punctuation, Use <quote style> quotes in <new code/always>

This looks to be fixed with the 2016.2 release - there's now an option in the Editor --> Code Style settings where you can choose single/double quotes.

See https://blog.jetbrains.com/webstorm/2016/07/webstorm-2016-2-drag-files-into-html-and-quotes-style/

Please see the answer of https://stackoverflow.com/a/42909782/2000468.

this answer is for an older version。

see the picture that let you set it quickly.