chore: simplify env config

vite.lib.config.js

@@ -0,0 +1,48 @@
+// @ts-check
+import { dirname, resolve } from 'path'
+import dts from 'unplugin-dts/vite'
+import { fileURLToPath } from 'url'
+import { defineConfig } from 'vite'
+import cssInjectedByJsPlugin from 'vite-plugin-css-injected-by-js'
+
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = dirname(__filename)
+
+/** @type {import('vite').UserConfig} */
+const config = {
+	// Library build configuration
+	plugins: [
+		dts({ tsconfigPath: './tsconfig.json', bundleTypes: true }),
+		cssInjectedByJsPlugin({ relativeCSSInjection: true }),
+	],
+	resolve: {
+		alias: {
+			'@': resolve(__dirname, 'src'),
+		},
+	},
+	publicDir: false,
+	esbuild: {
+		keepNames: true,
+	},
+	build: {
+		lib: {
+			entry: resolve(__dirname, 'src/PageAgent.ts'),
+			name: 'PageAgent',
+			fileName: 'page-agent',
+			formats: ['es'],
+		},
+		outDir: resolve(__dirname, 'dist', 'lib'),
+		rollupOptions: {
+			external: ['@ai-sdk/openai', 'ai', 'ai-motion', 'chalk', 'zod'],
+		},
+		// minify: 'terser',
+		minify: false,
+		sourcemap: true,
+		cssCodeSplit: true,
+	},
+	define: {
+		'process.env.NODE_ENV': '"production"',
+	},
+}
+
+export default defineConfig(config)