fix: resolve Nitro compatibility aliases during SSR

Author: harlan-zw

packages/script/src/nitro-compatibility.ts

@@ -79,9 +79,13 @@ export function useRuntimeConfig(_event) { return _useRuntimeConfig() }
 function applyNitroRuntimeCompatibility(nuxt: Nuxt, compatibility: NitroRuntimeCompatibility): void {
   const nuxtOptions = nuxt.options as Nuxt['options'] & { nitro?: NitroCompatibilityOptions }
   const nitroOptions = nuxtOptions.nitro ||= {}
+  const h3Runtime = compatibility._tag === 'nitro-v3' ? compatibility.h3 : 'h3'
   nitroOptions.alias ||= {}
   nitroOptions.virtual ||= {}
-  nitroOptions.alias[H3_RUNTIME_MODULE] = compatibility._tag === 'nitro-v3' ? compatibility.h3 : 'h3'
+  const nuxtAliases = nuxtOptions.alias ||= {}
+  delete nuxtAliases[H3_RUNTIME_MODULE]
+  nuxtOptions.alias = { [H3_RUNTIME_MODULE]: h3Runtime, ...nuxtAliases }
+  nitroOptions.alias[H3_RUNTIME_MODULE] = h3Runtime
   nitroOptions.virtual[NITRO_RUNTIME_MODULE] = compatibility._tag === 'nitro-v3'
     ? renderNitroV3Runtime(compatibility)
     : nitroV2Runtime

test/unit/nitro-compatibility.test.ts

@@ -13,6 +13,9 @@ function createNuxt(): Nuxt {
       hookOnce: hookOnceMock,
     },
     options: {
+      alias: {
+        '#nuxt-scripts': '/runtime',
+      },
       nitro: {},
     },
   } as Nuxt
@@ -37,6 +40,8 @@ describe('setupNitroRuntimeCompatibility', () => {
 
     await setupNitroRuntimeCompatibility(nuxt, createDependencies('4.5.0'))
 
+    expect(nuxt.options.alias['#nuxt-scripts/h3']).toBe('h3')
+    expect(Object.keys(nuxt.options.alias)[0]).toBe('#nuxt-scripts/h3')
     expect(nuxt.options.nitro.alias?.['#nuxt-scripts/h3']).toBe('h3')
     expect(nuxt.options.nitro.virtual?.['#nuxt-scripts/nitro']).toContain('from \'nitropack/runtime\'')
     expect(addTypeTemplateMock).toHaveBeenCalledWith(expect.any(Object), { nitro: true, node: true, nuxt: true })
@@ -53,6 +58,7 @@ describe('setupNitroRuntimeCompatibility', () => {
     await setupNitroRuntimeCompatibility(nuxt, createDependencies('5.0.0', resolveNitroImport))
 
     expect(resolveNitroImport).toHaveBeenCalledTimes(4)
+    expect(nuxt.options.alias['#nuxt-scripts/h3']).toBe('file:///nuxt-nitro/nitro-h3.mjs')
     expect(nuxt.options.nitro.alias?.['#nuxt-scripts/h3']).toBe('file:///nuxt-nitro/nitro-h3.mjs')
     expect(nuxt.options.nitro.virtual?.['#nuxt-scripts/nitro']).toContain('file:///nuxt-nitro/nitro-app.mjs')
     expect(nuxt.options.nitro.virtual?.['#nuxt-scripts/nitro']).toContain('file:///nuxt-nitro/nitro-cache.mjs')