refactor: use static imports now that wxt is esm-only

Since #848, there's no need to do all this async work.
At least, as far as I could tell...

Author: lishaduck

packages/wxt/src/core/builders/vite/plugins/devServerGlobals.ts

@@ -1,5 +1,5 @@
-import { Plugin } from 'vite';
-import { ResolvedConfig, WxtDevServer } from '../../../../types';
+import type { Plugin } from 'vite';
+import type { ResolvedConfig, WxtDevServer } from '../../../../types';
 
 /**
  * Defines global constants about the dev server. Helps scripts connect to the server's web socket.

packages/wxt/src/core/builders/vite/plugins/download.ts

@@ -1,5 +1,5 @@
-import { Plugin } from 'vite';
-import { ResolvedConfig } from '../../../../types';
+import type { Plugin } from 'vite';
+import type { ResolvedConfig } from '../../../../types';
 import { fetchCached } from '../../../utils/network';
 
 /**

packages/wxt/src/core/builders/vite/plugins/noopBackground.ts

@@ -1,4 +1,4 @@
-import { Plugin } from 'vite';
+import type { Plugin } from 'vite';
 import { VIRTUAL_NOOP_BACKGROUND_MODULE_ID } from '../../../utils/constants';
 
 /**

packages/wxt/src/core/builders/vite/plugins/resolveVirtualModules.ts

@@ -1,4 +1,4 @@
-import { Plugin } from 'vite';
+import type { Plugin } from 'vite';
 import { ResolvedConfig } from '../../../../types';
 import { normalizePath } from '../../../utils/paths';
 import {

packages/wxt/src/core/resolve-config.ts

@@ -577,8 +577,8 @@ export async function mergeBuilderConfig(
   if (vite) {
     return {
       vite: async (env) => {
-        const resolvedInlineConfig = (await inlineConfig.vite?.(env)) ?? {};
-        const resolvedUserConfig = (await userConfig.vite?.(env)) ?? {};
+        const [resolvedInlineConfig = {}, resolvedUserConfig = {}] =
+          await Promise.all([inlineConfig.vite?.(env), userConfig.vite?.(env)]);
         return vite.mergeConfig(resolvedUserConfig, resolvedInlineConfig);
       },
     };

packages/wxt/src/core/wxt.ts

@@ -26,8 +26,10 @@ export async function registerWxt(
 
   const hooks = createHooks<WxtHooks>();
   const config = await resolveConfig(inlineConfig, command);
-  const builder = await createViteBuilder(config, hooks, () => wxt.server);
-  const pm = await createWxtPackageManager(config.root);
+  const [builder, pm] = await Promise.all([
+    createViteBuilder(config, hooks, () => wxt.server),
+    createWxtPackageManager(config.root),
+  ]);
 
   wxt = {
     config,

packages/wxt/src/modules.ts

@@ -10,7 +10,7 @@ import type {
   WxtModuleOptions,
   WxtModuleSetup,
 } from './types';
-import * as vite from 'vite';
+import type * as vite from 'vite';
 import glob from 'fast-glob';
 import { resolve } from 'node:path';
 import type { UnimportOptions } from 'unimport';
@@ -109,7 +109,10 @@ export function addViteConfig(
   wxt.hooks.hook('config:resolved', (wxt) => {
     const userVite = wxt.config.vite;
     wxt.config.vite = async (env) => {
-      const fromUser = await userVite(env);
+      const [vite, fromUser] = await Promise.all([
+        import('vite'),
+        userVite(env),
+      ]);
       const fromModule = viteConfig(env) ?? {};
       return vite.mergeConfig(fromModule, fromUser);
     };