TypeScript: Slow compilation time

Now that create-react-app now natively supports typescript, I gave it a try. I expected near instant compilation times after making a change to a file, just like with JavaScript. Instead, I got about 3-5s of delay on the official typescript cra (out of the box). I thought this delay would disappear after moving to babel 7, I thought we simply strip off TypeScript when running the dev server and properly compile TypeScript and check for errors when building the production build? Is this possible?

[hlthi]

how are people working around this issue? I normally do everything i can to avoid ejecting but this is unbearable?

Just change tsconfig.json , “skipLibCheck” : true

[td0m]

@ianschmitz Changing the ForkTsCheckerWebpackPlugin config async to true and silent to false seems to fix both the issues you stated above. Errors are perfectly displayed. .

Obviously, because async is enabled and the ts checking takes more than the babel process, the errors are displayed with a delay.