How to rename a batch of files with webstorm 10

I want to change in a project from javascript to typescript. Therefore i want to change the extensions of all files from *.js to *.ts recursively. How do i accomplish it with webstorm?

How do I batch rename multiple files at once?

You can press and hold the Ctrl key and then click each file to rename. Or you can choose the first file, press and hold the Shift key, and then click the last file to select a group.

Is there a way to batch rename files?

To batch rename files, just select all the files you want to rename, press F2 (alternatively, right-click and select rename), then enter the name you want on the first file. Press Enter to change the names for all other selected files.

There's no way to rename multiple files in the project in WebStorm, unfortunately. You can vote for the related issue on JetBrains issue tracker.