@webcomponents/webcomponentsjs/.vscode/launch.json

Web Components Polyfills

{
  // Use IntelliSense to learn about possible attributes.
  // Hover to view descriptions of existing attributes.
  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
  "version": "0.2.0",
  "configurations": [
    {
      "type": "node",
      "request": "launch",
      "name": "Gulp task",
      "program": "${workspaceFolder}/node_modules/gulp/bin/gulp.js",
      "args": [
        "debug"
      ]
    }
  ]
}