File watcher doesn't watch renamed files

[jldec]

MESDK-91

In order to make updates more atomic, I tried to implement a pattern of writing a JSON structure to a temp file and then renaming that to replace the original message file.

It appears that the watcher on the original message file stops reacting to changes on the message file after the rename

(modifled code is in https://github.com/opral/monorepo/pull/2758)

Context

• modify generateMessageFile() in the sdk load-test.ts to write messages into temp.json, and then call fs.rename to rename it to messages.json. (This is useful to avoid partial writes)
• run load-test without translation, and with watch e.g. pnpm test 100 0 1 0 1
• run machine translate or edit the messages files manually in a text editor.

The translated changes to messages.json are not picked up by the watching process.

[jldec]

assigning @jan.johannes (suspected lix file watch issue)
repro in https://github.com/opral/monorepo/pull/2758

[jldec]

please see https://github.com/opral/monorepo/pull/2758#issuecomment-2107663445

[janfjohannes]

@jldec closing as behaves as expected. rename is not part of the lix fs api and known to cause plenty of issues in existing nodejs watch module as well. this cannot really be fixed until lix.fs implementation.