fix(resolve): use only root package.json as exports source

packages/vite/src/node/plugins/resolve.ts

@@ -659,7 +659,7 @@ export function tryNodeResolve(
   // nearest package.json that may have the `exports` field
   let pkg: PackageData | undefined
 
-  let pkgId = possiblePkgIds.reverse().find((pkgId) => {
+  let pkgId = possiblePkgIds.find((pkgId) => {
     nearestPkg = resolvePackageData(
       pkgId,
       basedir,

playground/resolve/__tests__/resolve.spec.ts

@@ -36,6 +36,10 @@ test('deep import with exports field + mapped dir', async () => {
   )
 })
 
+test('exports read from the root package.json', async () => {
+  expect(await page.textContent('.exports-from-root')).toMatch('[success]')
+})
+
 // this is how Svelte 3 is packaged
 test('deep import with exports and legacy fallback', async () => {
   expect(await page.textContent('.exports-legacy-fallback')).toMatch(

playground/resolve/exports-from-root/file.js

@@ -0,0 +1 @@
+export const msg = '[success] exports from root (./file.js)'

playground/resolve/exports-from-root/nested/file.js

@@ -0,0 +1 @@
+export const msg = 'fail exports from root (./nested/file.js)'

playground/resolve/exports-from-root/nested/package.json

@@ -0,0 +1,5 @@
+{
+  "exports": {
+    ".": "./file.js"
+  }
+}

playground/resolve/exports-from-root/package.json

@@ -0,0 +1,9 @@
+{
+  "name": "@vitejs/test-resolve-exports-from-root",
+  "private": true,
+  "version": "1.0.0",
+  "exports": {
+    ".": "./index.js",
+    "./nested": "./file.js"
+  }
+}

playground/resolve/index.html

@@ -24,6 +24,9 @@ <h2>Deep import with exports field + mapped directory</h2>
 <h2>Exports field env priority</h2>
 <p class="exports-env">fail</p>
 
+<h2>Exports field read only from the root package.json</h2>
+<p class="exports-from-root">fail</p>
+
 <h2>Exports with legacy fallback</h2>
 <p class="exports-legacy-fallback">fail</p>
 
@@ -166,6 +169,9 @@ <h2>resolve package that contains # in path</h2>
   import { msg as exportsEnvMsg } from '@vitejs/test-resolve-exports-env'
   text('.exports-env', exportsEnvMsg)
 
+  import { msg as exportsFromRootMsg } from '@vitejs/test-resolve-exports-from-root/nested'
+  text('.exports-from-root', exportsFromRootMsg)
+
   import { msg as exportsLegacyFallbackMsg } from '@vitejs/test-resolve-exports-legacy-fallback/dir'
   text('.exports-legacy-fallback', exportsLegacyFallbackMsg)
 

playground/resolve/package.json

@@ -20,6 +20,7 @@
     "@vitejs/test-resolve-custom-condition": "link:./custom-condition",
     "@vitejs/test-resolve-custom-main-field": "link:./custom-main-field",
     "@vitejs/test-resolve-exports-env": "link:./exports-env",
+    "@vitejs/test-resolve-exports-from-root": "link:./exports-from-root",
     "@vitejs/test-resolve-exports-legacy-fallback": "link:./exports-legacy-fallback",
     "@vitejs/test-resolve-exports-path": "link:./exports-path",
     "@vitejs/test-resolve-linked": "workspace:*"