launch.json

{
  "version": "0.2.0",
  "configurations": [
    {
      "name": "Test262 (edit subset in launch.json)",
      "request": "launch",
      "type": "node",
      "runtimeExecutable": "npm",
      "runtimeArgs": [
        "run", 
        "test262", 
        // Replace the glob pattern below with tests you want to debug.
        // Comment out to run all tests, but will be very slow!
        // "PlainYearMonth/prototype/subtract/*.js"
      ],
      "console": "integratedTerminal",
      "internalConsoleOptions": "neverOpen",
      "autoAttachChildProcesses": true,
      "env": {
        // Extends timeouts to 1 hour (from 10 seconds default) so you can
        // debug a test stopped at a breakpoint before the runner kills it.
        "TIMEOUT": "3600000"
      }
    },
    {
      "name": "Test262 (current file)",
      "request": "launch",
      "type": "node",
      "runtimeExecutable": "npm",
      "runtimeArgs": ["run", "test262", "${file}"],
      "console": "integratedTerminal",
      "internalConsoleOptions": "neverOpen",
      "autoAttachChildProcesses": true,
      "env": {
        // Extends timeouts to 1 hour (from 10 seconds default) so you can
        // debug a test stopped at a breakpoint before the runner kills it.
        "TIMEOUT": "3600000"
      }
    },
    {
      "name": "Demitasse tests",
      "request": "launch",
      "type": "node",
      "runtimeExecutable": "npm",
      "runtimeArgs": ["test"],
      "console": "integratedTerminal",
      "internalConsoleOptions": "neverOpen",
      "autoAttachChildProcesses": true,
    },
 ]
}