Configure Visual Studio Code to debug Mocha specs

launch.json

{
  "version": "0.2.0",
  "configurations": [
    {
      "name": "Launch",
      "type": "node",
      "request": "launch",
      "program": "${workspaceRoot}/server.js",
      "stopOnEntry": false,
      "args": [],
      "cwd": "${workspaceRoot}",
      "runtimeExecutable": null,
      "runtimeArgs": [
        "--nolazy"
      ],
      "env": {
        "NODE_ENV": "development"
      },
      "externalConsole": false,
      "sourceMaps": false,
      "outDir": null
    },
    {
      "name": "Mocha",
      "type": "node",
      "request": "launch",
      "program": "node_modules/mocha/bin/_mocha",
      "stopOnEntry": false,
      "args": [
        "test/suite.js",
        "--colors"
      ],
      "cwd": "${workspaceRoot}",
      "runtimeExecutable": null,
      "env": {
        "NODE_ENV": "development"
      }
    },
    {
      "name": "Attach",
      "type": "node",
      "request": "attach",
      "port": 5858,
      "sourceMaps": false,
      "outDir": null,
      "localRoot": "${workspaceRoot}",
      "remoteRoot": null
    }
  ]
}