Webpack watcher doesn't work

[pierre-H]

• VSCode Version: 1.15.1
• OS Version: Windows 7 32 bits

Steps to Reproduce:

1. Download last version of VS Code
2. create a new React project with create-react-app
3. launch VS Code and yarn start
4. edit a js file (for example index.js) and save it

Excepted : webpack relaunch the server
Result : no effect but if I edit with another editor like Notepad++ webpack relaunch the server

Reproduces without extensions: Yes

Note : I followed the doc for fixing that and I already asked help in create-react-app repository but a collaborator told me to ask the question here.

Thank you !

[pierre-H]

Sorry, I just tried with WebStorm and I have the same problem without the safe write ... So it's not VSCode.
Thanks

[pierre-H]

Finally yarn is the problem : wmonk/create-react-app-typescript#148