[manuroe]

Summary

Until now the anonymise page could only read anonymised text back with real IDs. With this PR it works both ways. The left pane holds text with real IDs and the right pane holds the anonymised version. You can edit either one, and the pane you edited last drives the other. Text typed with real IDs is anonymised with the salt alone, so its aliases match the anonymised rageshakes. The salt can now be changed from the page itself, and a salt change anonymises everything again.

As before, raw files and mappings stay in the tab's memory only.

Changes

• refactor(components): extract the salt field from the burger menu: SaltField is now a separate component, used by both the menu and the page.
• feat(utils): anonymise text with the salt, and read whose rageshake it is: adds anonymizeText, which leaves aliases already in the text as they are, and countRealIdentifiers, which runs the same scan as the CLI precheck. An anonymised file now carries its owner's user and device ID. They come from details.json, else from the latest Element Web login line (sorted by timestamp, because archive order is not chronological).
• feat(views): two-way anonymise page, real IDs on the left, anonymised on the right: two editable panes, each with a drop zone above it. The zone above the left pane loads a rageshake for its mapping only. The zone above the right pane anonymises the rageshake and downloads the result. A text file goes into the pane below its zone. The header shows whose rageshakes are loaded, has a dropdown listing them with Forget all, and a key button that opens the salt. The batch notice is gone. When the salt changes, every file is anonymised again, a file dropped to download is downloaded again, and the typed text's mapping is rebuilt.

For reviewers

• Each salt change, once typing settles (500 ms), downloads again every file that was dropped to download. Without that, the file you shared would no longer match the page's salt. Say if a single "Save again" would be better.
• A file whose re-run fails with a new salt loses its old mapping, which would be wrong for the new salt. It is tried again on the next salt change.
• With no rageshake loaded, Forget all stays hidden, so real IDs typed on the left are kept until the tab reloads.

Testing

• npm run build, npm run lint and npm test -- --run --coverage pass (2646 tests, coverage thresholds met). Each commit also typechecks and passes tests on its own.
• Not tried in a real browser yet. To check on #/anonymize:
  • type @alice:matrix.org on the left and see an alias appear on the right;
  • edit the right pane and see the left one follow;
  • drop a .tar.gz on each zone and check that only the right zone downloads;
  • change the salt and check that the right-hand file downloads again with new aliases.

[github-actions]

🚀 PR Preview ready:
https://manuroe.github.io/shakeview/pull/108/

[codspeed]

Merging this PR will not alter performance

1 warning

⚠️ 4 benchmarks are dominated by system calls

System calls cannot be simulated consistently and are left out of the measure. The reported value understates the real cost. Switch to the Walltime instrument to measure them.

Learn more about system calls

See affected benchmarks

✅ 30 untouched benchmarks

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_{Comparing feat/anonymise-two-panes (48965dd) with main (218d13b)}