[0.80.x] Publish 0.80.12 #1350
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[0.80.x] Publish 0.80.12 #1350
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Summary: `TreeFS.hierarchicalLookup` is a recently introduced function for finding closest package.json for an input path. It works by traversing to the input path while "collecting ancestors" - i.e. all of the directory nodes on route to the input path, and then checking each of them in reverse order for package.json. This gets a bit complicated when traversal includes symlinks. For the test case in this commit: - `n_m/workspace/link-to-pkg` is a symlink to '../workspace-pkg'. - When resolving the package scope of `n_m/workspace/link-to-pkg/subpath`, we should check: - `n_m/workspace/link-to-pkg` (realpath: `../workspace-pkg`) - `n_m/workspace` (realpath: `n_m/workspace`) In particular, when traversing to `../workspace-pkg`, we should *not* collect `..` but we *should* collect `../workspace-pkg`. We attempt to do this by keeping track of an `unseenPathFromIdx`, which lets us skip ancestor collection when we're traversing from the root to the symlink target. The logic here was effectively off-by-one - we were correctly skipping segments before the symlink target, and correctly collecting segments after, but we missed the symlink target itself. By setting `unseenPathFromIdx` to the index of the start of the target's basename, we include it correctly. Fixes #1347 Changelog: ``` - **[Fix]**: Fix #1347, symlinked packages not respecting package.json redirections. ``` Pull Request resolved: #1349 Test Plan: - New unit test - Verified e2e by patching metro-file-map in user's repro in #1347 Reviewed By: cortinico Differential Revision: D62343439 Pulled By: robhogan fbshipit-source-id: a823601daeffdc8dfd5b5bc3987b75889d44588f
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Release notes
This is a hotfix on the
0.80.xbranch.