Is there a way to reformat a multi-line list into a single line, and vice-versa?

Given this code:

const x = [
2,
3,
8,
];

Is there a way to quickly reformat it (with a keystroke) to this?

const x = [2, 3, 8];

And also take a single line like the one above and break it out into multi-line, too.

16 comments
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1. In Settings | Editor | Code Style |JavaScript, Wrapping and Braces, turn Keep when reformatting/Line Breaks OFF, then format your code (Code/Reformat Code...)

2. In Settings | Editor | Code Style |JavaScript, Wrapping and Braces, Array Initializer, choose 'Wrap always' and enable 'Place ']' on new line', then reformat code

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@Elena

I believe that actual question was "how to switch between such formatting (both ways) at any time" -- something similar to how "Toggle Case" sort of actions work.

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Andriy is right. I'm looking for a quick key command that will toggle.

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I see. Then the answer is simple - no, where is no way to do this

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Would be a handy feature.  Any plugins available?

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@Stephen Wille

No idea TBH -- I personally know none.

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That'd be a nice feature!

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Yep agreed... Came here looking for this feature.  Would be very handy as it's something I often do manually, both ways.

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The closest solution I know of is to bring array elements onto as few lines as possible. Highlight the lines you want to bring in, then Ctrl-Shift-J . To avoid having the formatter distribute array elements one per line again, put

//@formatter:off

before the code you do not want to have auto-formatted and

//@formatter:on

after
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move a list to 1 line, you can use join line.  put the cursor on the first item, and press ctrl-shift-j.

To split the list, you can use find and replace with regex option. Higlight the list, then find the delimiter, and then replace the delimiter with delimiter\n .

BTW, the delimiter can be a space.

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Thx a lot Scott !

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For singlelining code, I often do Search & Replace with regex: '\n\s*' => ''

For reverse action, I use code formatting, it does most of the job well.

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I'm surprised that is still not a thing. I have created an issue for that https://youtrack.jetbrains.com/issue/WI-47023 You can vote for it if you're interested

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There's a handy action `Ctrl+Shift+J`, which joins following lines into the one with the cursor. It's not exactly a toggle, and only works one way (joining), but it's better than nothing.

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Ah, Ctrl+Shift+J that is handy.  Still would be really nice to have the full feature, especially with the option to wrap around at the right-margin.  This is probably #1 on the list of repetitive actions that I have to do manually all the time.  

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@Clement Baconnier The issue you created was only for PHPStorm.  This thread is about Javascript/Webstorm.  Unfortunately the feature was only implemented for PHP, not JS.  They want a separate issue for each language.  Here is the 8 year old issue for the JS feature.  Please go vote for it!

https://youtrack.jetbrains.com/issue/WEB-1364

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