vscode-php-intellisense/.vscode/launch.json

// A launch configuration that compiles the extension and then opens it inside a new window
{
  "version": "0.1.0",
  "configurations": [
    {
      "name": "Launch Extension",
      "type": "extensionHost",
      "request": "launch",
      "runtimeExecutable": "${execPath}",
      "args": ["--extensionDevelopmentPath=${workspaceRoot}"],
      "stopOnEntry": false,
      "sourceMaps": true,
      "outDir": "${workspaceRoot}/out"
    },
    {
      "name": "Launch Tests",
      "type": "extensionHost",
      "request": "launch",
      "runtimeExecutable": "${execPath}",
      "args": ["--extensionDevelopmentPath=${workspaceRoot}", "--extensionTestsPath=${workspaceRoot}/out/test"],
      "stopOnEntry": false,
      "sourceMaps": true,
      "outDir": "${workspaceRoot}/out/test"
    },
    {
      "name": "Listen for XDebug",
      "type": "php",
      "request": "launch"
    }
  ]
}