fix(nuxt): resolve type import paths (#22476)

packages/nuxt/src/imports/module.ts

@@ -1,9 +1,10 @@
-import { addTemplate, addVitePlugin, addWebpackPlugin, defineNuxtModule, resolveAlias, updateTemplates, useNuxt } from '@nuxt/kit'
+import { addTemplate, addVitePlugin, addWebpackPlugin, defineNuxtModule, resolveAlias, tryResolveModule, updateTemplates, useNuxt } from '@nuxt/kit'
 import { isAbsolute, join, normalize, relative, resolve } from 'pathe'
 import type { Import, Unimport } from 'unimport'
 import { createUnimport, scanDirExports } from 'unimport'
 import type { ImportPresetWithDeprecation, ImportsOptions } from 'nuxt/schema'
 
+import { lookupNodeModuleSubpath, parseNodeModulePath } from 'mlly'
 import { TransformPlugin } from './transform'
 import { defaultPresets } from './presets'
 
@@ -140,19 +141,29 @@ function addDeclarationTemplates (ctx: Unimport, options: Partial<ImportsOptions
   // Remove file extension for benefit of TypeScript
   const stripExtension = (path: string) => path.replace(/\.[a-z]+$/, '')
 
-  const resolved: Record<string, string> = {}
-  const r = ({ from }: Import) => {
-    if (resolved[from]) {
-      return resolved[from]
+  const resolvedImportPathMap = new Map<string, string>()
+  const r = ({ from }: Import) => resolvedImportPathMap.get(from)
+  async function cacheImportPaths (imports: Import[]) {
+    for (const i of imports) {
+      if (resolvedImportPathMap.has(i.from)) { continue }
+      let path = resolveAlias(i.from)
+      if (!isAbsolute(path)) {
+        path = await tryResolveModule(i.from, nuxt.options.modulesDir).then(async (r) => {
+          if (!r) { return r }
+
+          const { dir, name } = parseNodeModulePath(r)
+          if (!dir || !name) { return r }
+          const subpath = await lookupNodeModuleSubpath(r)
+          return join(dir, name, subpath || '')
+        }) ?? path
       }
-    let path = resolveAlias(from)
       if (isAbsolute(path)) {
         path = relative(join(nuxt.options.buildDir, 'types'), path)
       }
 
       path = stripExtension(path)
-    resolved[from] = path
-    return path
+      resolvedImportPathMap.set(i.from, path)
+    }
   }
 
   addTemplate({
@@ -162,10 +173,14 @@ function addDeclarationTemplates (ctx: Unimport, options: Partial<ImportsOptions
 
   addTemplate({
     filename: 'types/imports.d.ts',
-    getContents: async () => '// Generated by auto imports\n' + (
+    getContents: async () => {
+      const imports = await ctx.getImports().then(r => r.filter(i => !i.type))
+      await cacheImportPaths(imports)
+      return '// Generated by auto imports\n' + (
         options.autoImport
           ? await ctx.generateTypeDeclarations({ resolvePath: r })
           : '// Implicit auto importing is disabled, you can use explicitly import from `#imports` instead.'
       )
+    }
   })
 }