Webstorm not recognising JavaScript file

Question

Webstorm doesn't recognize one of my .js files as a JavaScript file so I'm losing syntax highlighting and being able to add break points. I've looked in the workspace.xml file and the file in question seems to have similar settings to other .js files that work correctly.

If I change the name of the file it works ok. So somehow Webstorm is stuck on misinterpreting the type of a file that has this name. Where else can I edit the project?

Answer 1

So I see three possible reasons for the problem:

1. The file was marked as 'Plain text'

2. There is a pattern for 'Text files' file type that matches this file (or back: file type 'JavaScript' exclude this file name). See image below

3. There is a custom plugin that overrides default behavior for files with this name (unlikely)

Updated: after several years I've found one more reason for the behavior and most likely it the main source of the issues. When you create a file without any extensions the "Register New File Type Association" is appeared. And you can accidentally specify a new file type, for some file name. It is can be fixed with (2) but it is the reason why the pattern was added there.

Note: the solution works for all IDEA-based IDEs: IntelliJ IDEA, WebStorm, RubyMine, PyCharm, PhpStorm.

Answer 2

I had a strange case where none of the other answers here worked for me but then I remembered how I had created the file.

I had tried to be clever and used the following command

mkdir __tests__ && touch "${_}/index.test.js

The shell prompted me to complete the double quote and that was fine. I was able to load the file in IntelliJ Idea, but I was very confused as to why it was not getting javascript syntax highlighting. I tried to change the file association, but no luck.

Then I thought I would just delete the file and try to re-create it. When I typed the rm command I hit tab to autocomplete the file path and saw my problem:

rm __tests__/index.test.js$'\n'

Because I had hit enter before completing the double-quote in the command to create the file, the file was named index.test.js\n. IntelliJ Idea was happy to open the file and displayed it as index.test.js, but the extension was .js\n, not simply .js, hence it did not recognise the file as a .js file.

A rename would likely have worked, but I just deleted it and re-created it, this time without the \n at the end.

Answer 3

My problem was with Auto-detect file type by context

Answer 4

In case it is helpful elsewhere (OMG this was scary).

For some reason IntelliJ was not recognizing any .js file in my project (even after .idea removal (rm -rf .idea)).

I went to Webstorm (in my case RubyMine): Webstorm > Preferences ... > Editor > File Types then went to Recognized Filed Types, picked Javascript (but whatever file type you are missing will do), then added back a Registered Patterns entry of *.js

Of course, press Apply and then Ok.

Wow, scary stuff. but solved my problem, hope it does for someone else.

Answer 5

For me this did the trick
1) Preferences
2) Editor
3) FileTypes
4) Search for javascript
5) Add *.js to registered patterns

Answer 6

2022 update!

Right click on file and choose JavaScript

Answer 7

I was always trying to add .js as a recognised file types, but somehow .js was added to Ignored Files and Folders.

I just removed .js from Ignored Files and Folders and it worked for me.

1. Preferences
2. Editor
3. FileTypes
4. Ignored Files and Folders
5. Remove *.js

Answer 8

Copy the file, delete it using Windows Explorer and paste it again in the folder (DataAccess).

Surprise! Now Webstorm recognizes it...

Answer 9

If the file was marked as "Plain Text", then this can be fixed as follows:

1. Right click on the file.

2. One of the menu options is "Mark as Javascript" . Just below "Delete".

3. Click that. Your file is now recognized as javascript by WebStorm.

Since WebStorm was not allowing screenshots after right click so couldn't add it here.

Answer 10

File -> Settings -> Editor -> FileTypes -> Text files -> check for "ContentRepository.js" pattern there and remove it.

Answer 11

You can also try "Template data languages" (in file > settings) which will force a specific language synatax high-lighting on a specific file or folder. See screenshot below

For a block of code you can also use "language injection". Simply high-light the block of code, wait for the little lamp to appear then select the bottom choice and then the language you need (screenshot also attached)