launch.json

{
    // Use IntelliSense to learn about possible Node.js debug 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": "Launch Program",
            "program": "${workspaceRoot}\\build\\src\\app.js",
            "cwd": "${workspaceRoot}\\build\\src",
            "sourceMaps": true,
            "outFiles": [ "${workspaceRoot}/build/src/**/*.js" ],
            "env": {
                "APP_BASE_URI": "<your site base uri, e.g., https://myapp.ngrok.io>",
                "MICROSOFT_APP_ID": "<your bot id>",
                "MICROSOFT_APP_PASSWORD": "<your bot password>",
                "TRANSLATOR_ACCESS_KEY": "<your translator access key>"
            }
        },
        {
            "type": "node",
            "request": "attach",
            "name": "Attach to Process",
            "port": 5858,
            "outFiles": []
        }
    ]
}