configutil: add Derive and a Validator hook on the observer - #1795
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Derive narrows an Observable onto a subtree of itself, so a package can define the config it owns and have an app embed it without that package importing the app's config type. project selects and must return a pointer into its argument: Load results are compared by identity. Validator lets a Builder reject a config before it is stored, so a reload is all-or-nothing and a bad edit leaves the running config in force. InitDefaults' error is now checked on the same path, where it was discarded.
🦋 Changeset detectedLatest commit: 0eeaf8a The changes in this PR will be included in the next version bump. This PR includes changesets to release 2 packages
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boks1971
approved these changes
Sep 13, 2026
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Derive narrows an Observable onto a subtree of itself, so a package can
define the config it owns and have an app embed it without that package
importing the app's config type. project selects and must return a pointer
into its argument: Load results are compared by identity.
Validator lets a Builder reject a config before it is stored, so a reload
is all-or-nothing and a bad edit leaves the running config in force.
InitDefaults' error is now checked on the same path, where it was
discarded.