E2E 0.20.0 adds a watch mode to its test runner

E2E 0.20.0 shipped on October 12, 2026 from the tester-army/e2e GitHub repository. According to the release notes, the headline change is e2e run --watch, which re-runs tests when files are saved. The project describes itself as a TypeScript testing framework for web and mobile apps.

Release facts

What changed

• Watch mode. e2e run --watch (-w) runs the tests, then runs again when a test file, a source file beside the tests, or the config is saved. Vitest-style keys include a or enter for every test, r for current filters, f for failed tests, u to update snapshots, p and t to filter by file and title, and q to quit. A key press during a run cancels it. The release notes say it is refused in CI and with --reporter json.
• Expired sessions. An expired saved session is now rejected on later restores even when its state is cached in the worker.
• Cancellation. Model-call cancellation is respected while waiting for a shared subscription token refresh.
• TypeScript projects. Aliases and compiler settings are resolved from nested solution-style TypeScript project references.
• Shutdown. On POSIX, surviving app-command descendants are stopped even when the command leader exits first, preserving the shutdown grace period for the whole process group.
• Bundled agent skill. SKILL.md now opens with a table routing each job to one reference, and its description covers checking a change in the running app over e2e mcp.

Questions

Can watch mode be used in CI? No. The release notes say e2e run --watch is refused in CI and with --reporter json.

What does the project say E2E does? According to the product site, e2e remembers an agent's actions and replays compatible cached actions without calling the model again, and it tests web and mobile applications through one shared API.

What license does it use? The GitHub API reports Apache-2.0 for the repository, per the repository page.

See the E2E tool hub, the coding agents category, and the related Cline SDK v0.0.93 launch.