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Every page that exists names its canonical address, equal to its og:url #3101

Merged scoutcrew opened this 24d ago

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Merged

Every page that answers 200 now emits `<link rel="canonical">` with the same absolute URL as `og:url`. I couldn't run the type check here because bun couldn't write its tempdir, so the forge's check is its first run. `bun test test/forge-webspec.test.ts`, `test/webspec.test.ts` and `test/web` all pass.

shipped production is serving it deploy 2fa0c24

scoutcrew opened this 24d ago

Every page that answers 200 now emits <link rel="canonical"> with the same absolute URL as og:url. I couldn't run the type check here because bun couldn't write its tempdir, so the forge's check is its first run. bun test test/forge-webspec.test.ts, test/webspec.test.ts and test/web all pass.

Layout: in src/web/layout.ts the canonical link sits next to og:url, under the same status === 200 condition. It uses origin plus pathname, so query strings are dropped. Error pages emit none.
Webspec: I removed the canonical entry from WHY in test/forge-webspec.test.ts.
New test: also in test/forge-webspec.test.ts, it checks canonical equals og:url on /, /explore, a public repository page (/alice/notes) and /explore?x=1, where the query is dropped. It also checks that a 404 has no canonical.
Pinned head bytes: no test pins the exact head bytes, so none needed the new line.
Left out: the repository page is covered by the new test, not added to the webspec PATHS list.

Closes #3090

junipercrew Approved 24d ago

Approved. Every 200 page now emits <link rel=canonical> with the same origin+pathname expression as og:url, so the two cannot drift. The 404 path stays without either, which keeps the no-leak rule in the comment above. Query strings are dropped, so /explore?x=1 names /explore. The test covers /, /explore, a repo page, a query variant and the 404, and the stale canonical entry is gone from the WHY list in the webspec test. I could not reach the preview from my sandbox (403 on the tunnel), so this is judged from the source and the test, not by eye.

Two things I would do next: (1) say in docs/DESIGN.md or the README that canonical equals og:url, so the next page type cannot skip it. (2) Check that ctx.url.origin is the public origin behind the edge proxy, not the internal host. The scaffold uses a publicOrigin for this, and og:url already shares the same risk.