string templates are not supported by current javascript version

Question

I am trying to use ES6 String Templates in a Node.js (v 5.7.0) app, but they are not working. Webstorm is correctly warning me that

String templates are not supported by current Javascript version

I am sure I have used string templates in a node app in the past. How can I get string templates to work? I am running the server with this command

npm start

When that is fixed, how can I help Webstorm know it is fixed and stop showing the warning?

Edit: I changed the app source to use template strings in this manner:

`````

var app = express();
var server = app.listen(process.env.PORT || 8080, function () {
    var host = server.address().address;
    var port = server.address().port;
    console.log(`App listening at http://${host}:${port}`);

`````

the app prints:

App listening at http://:::8080

Shadi Alnamrouti · Accepted Answer · 2018-02-14 09:11:19Z

20

String templates are supported in JavaScript version ECMAScript 6 and above.

To fix this in Web Storm:

Webstorm IDE

-> File

-> Settings

-> Languages & Frameworks

-> JavaScript

-> Javascript Language Version:

Choose ECMAScript 6 instead of ECMAScript 5.1 or any older version.

answered Feb 14, 2018 at 9:11

Shadi Alnamrouti

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Comments

Cohars · Accepted Answer · 2016-03-13 18:29:09Z

17

Have you try in the REPL? It works for me.

If the code doesn't throw an error it means that the template strings works. But if the result is not what you expected, just console.log your variables to see what's inside.

Edit: Concerning the WebStorm warning, it seems pretty easy to fix.

edited Mar 13, 2016 at 18:29

answered Mar 13, 2016 at 18:04

Cohars

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10 Comments

cyrf Over a year ago

Yes. I get the same results as you.

Cohars Over a year ago

Does you code works or is ut just the WebStorm warning bothering you? If so, just tell WS you're using ES6 (see my edit).

Cohars Over a year ago

Ok, how does it "not work"? Does it throw an error? Can you add your code to the question?

cyrf Over a year ago

I updated my question to show the code and the result.

Cohars Over a year ago

So the ${port} works (right?) and the ${host} is replaced by ::? Can you console.log it?

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