launch.json

{
    "version": "0.2.0",
    "configurations": [
        {
            "type": "node",
            "request": "launch",
            "name": "Debug Jest: Current test file",
            "program": "${workspaceFolder}/node_modules/jest/bin/jest.js",
            "args": [
                "${fileBasenameNoExtension}",
                "--runInBand",
                "--config",
                "${workspaceFolder}/jest.config.ts"
            ],
            "skipFiles": [
                "<node_internals>/**"
            ],
            "console": "internalConsole"
        },
        {
            "type": "node",
            "request": "launch",
            "name": "Debug Jest: All tests",
            "program": "${workspaceFolder}/node_modules/jest/bin/jest.js",
            "args": [
                "--runInBand",
                "--config",
                "${workspaceFolder}/jest.config.ts"
            ],
            "skipFiles": [
                "<node_internals>/**"
            ],
            "console": "internalConsole"
        },
        {
            "type": "node-terminal",
            "name": "Start Server",
            "request": "launch",
            "command": "npm start",
            "cwd": "${workspaceFolder}"
        }
    ]
}