mongodb-memory-server/.vscode/launch.json

{
  // 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": [
    {
      "name": "Jest Current File",
      "type": "node",
      "request": "launch",
      "program": "${workspaceFolder}/node_modules/.bin/jest",
      "args": ["${fileBasenameNoExtension}", "--config", "jest.config.js"],
      "console": "integratedTerminal",
      "internalConsoleOptions": "neverOpen",
      "runtimeArgs": ["--nolazy"], // tells v8 to compile your code ahead of time, so that breakpoints work correctly
      "disableOptimisticBPs": true // also helps that breakpoints work correctly
    },
    {
      "name": "Jest",
      "type": "node",
      "request": "launch",
      "program": "${workspaceFolder}/node_modules/.bin/jest",
      "args": ["--runInBand", "--watch"],
      "cwd": "${workspaceFolder}",
      "console": "integratedTerminal",
      "internalConsoleOptions": "neverOpen",
      "disableOptimisticBPs": true
    }
  ]
}