Closed
Description
Is this a bug report?
Yes, this is a bug report.
I get a syntax error with the following code, which I reduced as much as possible to just trigger the error:
const first = async <X extends {}>() => {
await something();
};
const second = async <Y extends {}>() => {};Did you try recovering your dependencies?
Yes, but recovering didn't help.
Output of yarn --version:
1.13.0
Environment
$ npx create-react-app --info
Environment Info:
System:
OS: macOS 10.14.2
CPU: x64 Intel(R) Core(TM) i5-7360U CPU @ 2.30GHz
Binaries:
Node: 11.9.0 - /usr/local/bin/node
Yarn: 1.13.0 - /usr/local/bin/yarn
npm: 6.7.0 - /usr/local/bin/npm
Browsers:
Chrome: 71.0.3578.98
Firefox: 64.0.2
Safari: 12.0.2
npmPackages:
react: ^16.8.1 => 16.8.1
react-dom: ^16.8.1 => 16.8.1
react-scripts: 2.1.3 => 2.1.3
npmGlobalPackages:
create-react-app: Not FoundSteps to Reproduce
See "Reproducible Demo".
Expected Behavior
I wouldn't expect a syntax error (other errors with this code, yes, but no syntax error)
AFAIK the code is valid TypeScript.
Actual Behavior
Syntax error:
Failed to compile.
./src/index.tsx
SyntaxError: /Users/sebu/Desktop/2019-02-08-cra-ts-syntaxerror/src/index.tsx: Unexpected token, expected ";" (5:24)
3 | };
4 |
> 5 | const second = async <Y extends {}>() => {};
| ^
6 |
As colorized screenshot:
Reproducible Demo
Reproducible repo at https://github.com/sbusch/2019-02-08-cra-ts-syntaxerror which I stripped down as much as possible.
Problem is in src/index.tsx:
Steps to reproduce:
git clone https://github.com/sbusch/2019-02-08-cra-ts-syntaxerror.git
cd 2019-02-08-cra-ts-syntaxerror
yarn install
BROWSER=none yarn start