refactor(tooling): [MOD-02] split library build and development into typed modules

scripts/library/config.ts

@@ -0,0 +1,41 @@
+import type { BuildOptions, InlineConfig, LibraryFormats, Plugin } from 'vite'
+import { bannerPlugin, workerBannerPlugin } from './banner.ts'
+
+export interface LibraryConfigOptions {
+  entry: string
+  outDir: string
+  name: string
+  format: LibraryFormats
+  fileName: string
+  minify?: boolean | 'esbuild' | 'terser'
+  target?: string | string[]
+  banner?: string
+  emptyOutDir?: boolean
+}
+
+type LibraryConfig = InlineConfig & {
+  build: BuildOptions & { rollupOptions: NonNullable<BuildOptions['rollupOptions']> & { plugins: Plugin[] } }
+  define: Record<string, string>
+}
+
+export function getViteBuildConfig(options: LibraryConfigOptions): LibraryConfig {
+  const { entry, outDir, name, format, fileName, minify = 'esbuild', target = 'es2020', banner, emptyOutDir = false } = options
+  return {
+    configFile: false,
+    publicDir: false,
+    logLevel: 'warn',
+    build: {
+      outDir,
+      emptyOutDir,
+      minify,
+      target,
+      lib: { entry, name, formats: [format], fileName: () => fileName },
+      rollupOptions: {
+        output: { exports: 'default' },
+        plugins: banner ? [bannerPlugin(name, banner)] : [],
+      },
+    },
+    worker: { format: 'es', plugins: () => [workerBannerPlugin()] },
+    define: { 'process.env.NODE_ENV': JSON.stringify(minify ? 'production' : 'development') },
+  }
+}