feat: add h3 auto imports preset (#397)

src/imports.ts

@@ -15,29 +15,5 @@ export const nitroImports: Preset[] = [
       'nitroPlugin',
       'defineRenderHandler'
     ]
-  },
-  {
-    from: 'h3',
-    imports: [
-      'defineEventHandler',
-      'defineLazyEventHandler',
-      'eventHandler',
-      'lazyEventHandler',
-      'dynamicEventHandler',
-      'appendHeader',
-      'assertMethod',
-      'createError',
-      'handleCacheHeaders',
-      'isMethod',
-      'sendRedirect',
-      'useCookies',
-      'useCookie',
-      'deleteCookie',
-      'setCookie',
-      'useBody',
-      'useMethod',
-      'useQuery',
-      'useRawBody'
-    ]
   }
 ]

src/options.ts

@@ -3,10 +3,10 @@ import { loadConfig } from 'c12'
 import { klona } from 'klona/full'
 import { camelCase } from 'scule'
 import { defu } from 'defu'
+import { resolveModuleExportNames, resolvePath as resovleModule } from 'mlly'
 // import escapeRE from 'escape-string-regexp'
 import { withLeadingSlash, withoutTrailingSlash, withTrailingSlash } from 'ufo'
 import { isTest } from 'std-env'
-import { resolvePath as resovleModule } from 'mlly'
 import { resolvePath, detectTarget } from './utils'
 import type { NitroConfig, NitroOptions } from './types'
 import { runtimeDir, pkgDir } from './dirs'
@@ -152,6 +152,15 @@ export async function loadOptions (userConfig: NitroConfig = {}): Promise<NitroO
     options.autoImport.exclude.push(options.buildDir)
   }
 
+  // Add h3 auto imports preset
+  if (options.autoImport) {
+    const h3Exports = await resolveModuleExportNames('h3', { url: import.meta.url })
+    options.autoImport.presets.push({
+      from: 'h3',
+      imports: h3Exports.filter(n => !n.match(/^[A-Z]/) && n !== 'use')
+    })
+  }
+
   options.baseURL = withLeadingSlash(withTrailingSlash(options.baseURL))
   options.runtimeConfig = defu(options.runtimeConfig, {
     app: {