Get WebStorm 2018.2 Release Candidate if you want to try TypeScript 3.0 RC: https://www.jetbrains.com/webstorm/nextversion/ … Install typescript@rc in your project or globally and then select the path to the new package in Preferences | Languages and Frameworks | TypeScript.https://twitter.com/typescriptlang/status/1017455505487249408 …
Thank you for your feedback! Can you please provide a bit more details to help us reproduce the problem? How do you create a project - is that an empty project or do you use Create New Project - React App? Any chance you have removed the .idea folder from the project root?