| `Maybe` | `MaybeLocal` |

| ---------------------- | ------------------------------- |

| `maybe.IsNothing()` | `maybe_local.IsEmpty()` |

| `maybe.IsJust()` | `!maybe_local.IsEmpty()` |

| `maybe.To(&value)` | `maybe_local.ToLocal(&local)` |

| `maybe.ToChecked()` | `maybe_local.ToLocalChecked()` |

| `maybe.FromJust()` | `maybe_local.ToLocalChecked()` |

| `maybe.Check()` | – |

| `v8::Nothing<T>()` | `v8::MaybeLocal<T>()` |

| `v8::Just<T>(value)` | `v8::MaybeLocal<T>(value)` |

| Directory | Runs on CI | Purpose |

| ------------------- | --------------- | --------------- |

| `abort` | Yes | Tests for when the `--abort-on-uncaught-exception` flag is used. |

| `addons` | Yes | Tests for [addon](https://nodejs.org/api/addons.html) functionality along with some tests that require an addon. |

| `async-hooks` | Yes | Tests for [async_hooks](https://nodejs.org/api/async_hooks.html) functionality. |

| `benchmark` | No | Test minimal functionality of benchmarks. |

| `cctest` | Yes | C++ tests that are run as part of the build process. |

| `code-cache` | No | Tests for a Node.js binary compiled with V8 code cache. |

| `common` | | Common modules shared among many tests. [Documentation](./common/README.md) |

| `doctool` | Yes | Tests for the documentation generator. |

| `es-module` | Yes | Test ESM module loading. |

| `fixtures` | | Test fixtures used in various tests throughout the test suite. |

| `internet` | No | Tests that make real outbound network connections. Tests for networking related modules may also be present in other directories, but those tests do not make outbound connections. |

| `js-native-api` | Yes | Tests for Node.js-agnostic [n-api](https://nodejs.org/api/n-api.html) functionality. |

| `known_issues` | Yes | Tests reproducing known issues within the system. All tests inside of this directory are expected to fail. If a test doesn't fail on certain platforms, those should be skipped via `known_issues.status`. |

| `message` | Yes | Tests for messages that are output for various conditions (`console.log`, error messages etc.) |

| `node-api` | Yes | Tests for Node.js-specific [n-api](https://nodejs.org/api/n-api.html) functionality. |

| `parallel` | Yes | Various tests that are able to be run in parallel. |

| `pseudo-tty` | Yes | Tests that require stdin/stdout/stderr to be a TTY. |

| `pummel` | No | Various tests for various modules / system functionality operating under load. |

| `sequential` | Yes | Various tests that must not run in parallel. |

| `testpy` | | Test configuration utility used by various test suites. |

| `tick-processor` | No | Tests for the V8 tick processor integration. The tests are for the logic in `lib/internal/v8_prof_processor.js` and `lib/internal/v8_prof_polyfill.js`. The tests confirm that the profile processor packages the correct set of scripts from V8 and introduces the correct platform specific logic. |

| `v8-updates` | No | Tests for V8 performance integration. |