fix: correctly parse package name for scoped packages

server/api/registry/analysis/[...pkg].get.ts

@@ -41,7 +41,7 @@ export default defineCachedEventHandler(
 
     try {
       const { packageName, version } = v.parse(PackageRouteParamsSchema, {
-        packageName: rawPackageName,
+        packageName: decodeURIComponent(rawPackageName),
         version: rawVersion,
       })
 

server/api/registry/install-size/[...pkg].get.ts

@@ -18,7 +18,7 @@ export default defineCachedEventHandler(
 
     try {
       const { packageName, version: requestedVersion } = v.parse(PackageRouteParamsSchema, {
-        packageName: rawPackageName,
+        packageName: decodeURIComponent(rawPackageName),
         version: rawVersion,
       })
 

test/unit/server/utils/parse-package-params.spec.ts

@@ -0,0 +1,53 @@
+import { describe, expect, it } from 'vitest'
+import { parsePackageParams } from '#server/utils/parse-package-params'
+
+describe('parsePackageParams', () => {
+  describe('unscoped packages', () => {
+    it('parses package name without version', () => {
+      const segments = ['vue']
+      const result = parsePackageParams(segments)
+      expect(result).toEqual({
+        rawPackageName: 'vue',
+        rawVersion: undefined,
+      })
+    })
+
+    it('parses package name with version', () => {
+      const segments = ['vue', 'v', '3.4.0']
+      const result = parsePackageParams(segments)
+      expect(result).toEqual({
+        rawPackageName: 'vue',
+        rawVersion: '3.4.0',
+      })
+    })
+
+    it('parses package name with prerelease version', () => {
+      const segments = ['nuxt', 'v', '4.0.0-rc.1']
+      const result = parsePackageParams(segments)
+      expect(result).toEqual({
+        rawPackageName: 'nuxt',
+        rawVersion: '4.0.0-rc.1',
+      })
+    })
+  })
+
+  describe('scoped packages', () => {
+    it('parses scoped package name without version', () => {
+      const segments = ['@nuxt', 'kit']
+      const result = parsePackageParams(segments)
+      expect(result).toEqual({
+        rawPackageName: '@nuxt/kit',
+        rawVersion: undefined,
+      })
+    })
+
+    it('parses scoped package name with version', () => {
+      const segments = ['@nuxt', 'kit', 'v', '1.0.0']
+      const result = parsePackageParams(segments)
+      expect(result).toEqual({
+        rawPackageName: '@nuxt/kit',
+        rawVersion: '1.0.0',
+      })
+    })
+  })
+})