Why does Webstorm highlight the spread operator?

Question

JavaScript

handleChangeInput(e){
        const {name, value} = e.target;
        this.setState({obj:{
            ...this.state.obj, [name]:value
        }});

Why does Webstorm highlight the line ...this.state.obj, [name]:valuewith the message Expression statement is not assignment or call?
The code itself is executed, the project also starts without errors, but Webstorm simply underlines all subsequent code in red with the message 'return' outside function definition.

The JavaScript Version is set to JSX Harmony.

Answer 1

Try clicking the Typescript button at the bottom of the screen and finding the Restart item there. Usually helps in such situations.