perf: constant variable provide check

src/build.ts

@@ -17,6 +17,9 @@ import { ensureProxies, lookupFile, normalizePath } from './utils'
 declare const __PACKAGE_NAME__: string
 declare const __PACKAGE_VERSION__: string
 
+const packageName = typeof __PACKAGE_NAME__ === 'string' ? __PACKAGE_NAME__ : 'vite-plugin-mock-dev-server'
+const packageVersion = typeof __PACKAGE_VERSION__ === 'string' ? __PACKAGE_VERSION__ : 'latest'
+
 type PluginContext<T = Plugin['buildEnd']> = T extends (
   this: infer R,
   ...args: any[]
@@ -109,7 +112,7 @@ export async function generateMockServer(
 
 function getMockDependencies(deps: Metafile['inputs'], alias: ResolvedConfig['resolve']['alias']): string[] {
   const list = new Set<string>()
-  const excludeDeps = [__PACKAGE_NAME__, 'connect', 'cors']
+  const excludeDeps = [packageName, 'connect', 'cors']
   const isAlias = (p: string) => alias.find(({ find }) => aliasMatches(find, p))
   Object.keys(deps).forEach((mPath) => {
     const imports = deps[mPath].imports
@@ -134,7 +137,7 @@ function generatePackageJson(pkg: any, mockDeps: string[]) {
     },
     dependencies: {
       'connect': '^3.7.0',
-      'vite-plugin-mock-dev-server': `^${__PACKAGE_VERSION__}`,
+      'vite-plugin-mock-dev-server': `^${packageVersion}`,
       'cors': '^2.8.5',
     } as Record<string, string>,
     pnpm: { peerDependencyRules: { ignoreMissing: ['vite'] } },