The Playwright suite had no linter and no formatter — only tsc. Add flat-config ESLint
(typescript-eslint, type-aware) and Prettier (2-space, matching the suite's style).
Rules keep the ones that catch real TEST bugs and drop the noise:
- no-floating-promises KEPT — an un-awaited request/assertion can let a test end before it runs,
passing vacuously. It caught one: the SSE reader loop in sse-listener is now explicitly `void`.
- no-unused-vars KEPT — caught three dead bindings (an unused adminToken fixture arg, an unused
`api` arg, an unused JPEG_MAGIC import), all removed.
- no-explicit-any OFF — all test code; `any` is the honest type for an untyped res.json() body or
a page.evaluate() return.
- no-empty-pattern OFF — Playwright's dependency-free fixtures are `async ({}, use) => {}`.
Refactor: `const BASE = process.env.E2E_FRONTEND_URL ?? '...'` was redeclared verbatim in 23
files — extracted to helpers/env.ts and imported, so a port/scheme change is one edit not a sweep.
Then `prettier --write`. Verified: eslint clean, tsc clean, prettier clean, desktop suite 210
passed / 1 skipped. (One mobile spec flaked once under retries:0 — a pre-existing cross-test
reflow-timing vector from the flakiness audit, not this change: the each-key edit is stable across
16 isolated runs and a clean full mobile re-run.)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Follow-ups from the code review of the test-quality batches:
- Consolidate duplicated helpers into e2e/helpers/: seed.ts (seedUpload,
seedComment, listComments, findFeedRow) and sse.ts (mintSseTicket, openStream,
trackStreamOpens). Refactor authorization-deep, xss-injection, like-comment,
sse-ticket-abuse, ddos, sse-realtime, multi-tab, and SseListener to use them —
the upload/comment/ticket-flow contracts now live in one place each instead of
being re-inlined across 3–7 specs.
- xss-injection display-name loop: it navigated to /feed (which renders uploader
names, not the viewer's) so "nothing fired" passed vacuously — the payload was
never rendered. Now navigate to /account (the actual sink) and add a render
guard asserting the payload reached the DOM as escaped text before checking
__xssFired.
- sse-realtime reconnect: snapshot the stream-open count AFTER backgrounding, so
the "new connection" assertion is attributable to the foreground event and can't
be satisfied by a spurious native/error reconnect before the toggle.
- recover-page: correct the comment (auto-submit is the onPinInput handler, not an
$effect).
44 affected specs verified green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
