feat(resolve): support subpath imports #10929
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Closes vitejs#4439 More context: vitejs#10504
Bug introduced in vitejs#10683 Some packages use "require" instead of "default" for CJS entry
…in the `getInlineConditions` function.
…and avoid breaking certain `tryFsResolve` calls too (like with `es5-ext`)
The "{id}/package.json" lookup done by `resolvePackageData` is insufficient for certain edge cases, like when "node_modules/{dep}" is linked to a directory without a package.json in it. With this PR, you can now import any file from node_modules even if it has no package.json file associated with it. This mirrors the same capability in Node's resolution algorithm.
In addition to supporting more edge cases, this new implementation might also be faster in some cases, since we are doing less lookups than compared to the previous behavior of calling `resolvePackageData` for every path in the `possiblePkgIds` array.
aleclarson
changed the title
benmccann
reviewed
Nov 15, 2022
benmccann
reviewed
Nov 15, 2022
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@benmccann You might want to look at only b3ef8f3 if you want to review this PR, as there are other PRs it depends on, thereby adding a bunch of noise to the "Files changed" tab. |
benmccann
reviewed
Nov 15, 2022
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| // Find the importer's nearest package.json with a "name" field. | ||
| // Some projects (like Svelte) have nameless package.json files to |
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this will probably change in the future with Svelte 4 when we drop support for old versions of Node, so worth including the version here
Suggested change
| // Some projects (like Svelte) have nameless package.json files to | |
| // Some projects (like Svelte 3) have nameless package.json files to |
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benmccann
reviewed
Feb 22, 2023
| @@ -110,7 +110,7 @@ | |||
| "postcss-import": "^15.0.0", | |||
| "postcss-load-config": "^4.0.1", | |||
| "postcss-modules": "^5.0.0", | |||
| "resolve.exports": "^1.1.0", | |||
| "resolve.exports": "npm:@alloc/resolve.exports@^1.1.0", | |||
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we don't need to change this to use a fork. the current resolve.exports version used by Vite supports subpath imports
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Description
This uses
resolveExportsto resolve subpath imports. To do so, it has to replace the leading#with./to mimic anexportsmapping field. With each path returned byresolveExports, we callthis.resolveto support mapping to external packages (the Node.js docs say this is valid).Additional context
Closes #7385
TODO: Write tests or copy them over from #7770
What is the purpose of this pull request?