This is a modified version, will not work with the origin one
VSCode extension based on regexper-static. Including regexp expression preivewer and realtime preivew editor.
This extension is available for free in the Visual Studio Code Marketplace
Click here to go to the Changelog
PS: Since the author of this extension seems to be not active for now(my PR didn't got merged by its origin repo for a long time), so I made my version to work with new version of vscode.