Why phpStorm shows highlight error for laravel echo syntax

I written a laravel echo code in phpStorm like this :

echo.private('user-channel.5').listen('.NewMessage', (e) => {
    alert('salam');
    console.log(e);
});

But phpStorm highlights a part of that code as an error.

This is an screenshot of what is happened:

Also when I use Ctrl+Alt+L to formatting, phpStorm does not format this lines of code properly.

Of course when I run gulp command to compile file contain Echo codes, that runs without problem.

Which settings should be change to solve this problem in phpStorm ?

via A.B.Developer