Customize your favorite VSCode extensions

Steps

1. Find the source code, and clone it, probably from GitHub.
2. cd to the folder, then

# npm install -g vsce
npx vsce package
# make sure `code` is in PATH first
code --install-extension my-extension-0.0.1.vsix

I am doing it with this package, https://github.com/patarapolw/vscode-language-ignore