fix: ignore namespace from declaration collect

fix #352

examples/ts/src/index.ts

@@ -19,3 +19,6 @@ export default data
 
 export type { User as MyUser } from './types'
 export type { AliasType } from '@alias/type'
+
+export type * from './namespace'
+export type * from './modules'

examples/ts/src/modules.ts

@@ -0,0 +1,5 @@
+declare module 'tslib' {
+  export type Test = { newField: string }
+}
+
+export {}

examples/ts/src/namespace.ts

@@ -0,0 +1,10 @@
+// eslint-disable-next-line @typescript-eslint/no-namespace
+export namespace NameSpace {
+  export const namespace = 'namespace'
+  export const enum NamespaceEnum {
+    A,
+    B,
+    C,
+    D
+  }
+}

examples/ts/vite.config.ts

@@ -6,8 +6,6 @@ import dts from '../../src'
 emptyDir(resolve(__dirname, 'dist'))
 emptyDir(resolve(__dirname, 'types'))
 
-console.log('a')
-
 export default defineConfig({
   resolve: {
     alias: {
@@ -29,7 +27,7 @@ export default defineConfig({
       // aliasesExclude: [/^@components/],
       staticImport: true,
       // insertTypesEntry: true,
-      // rollupTypes: true,
+      rollupTypes: true,
       declarationOnly: true
     })
   ]

src/plugin.ts

@@ -741,7 +741,7 @@ export function dtsPlugin(options: PluginOptions = {}): import('vite').Plugin {
           await runParallel(cpus().length, [...rollupFiles], async filePath => {
             await writeOutput(
               filePath,
-              (await readFile(filePath, 'utf-8')) + (declared ? `\n${declared}\n` : ''),
+              (await readFile(filePath, 'utf-8')) + (declared ? `\n${declared}` : ''),
               dirname(filePath)
             )
           })

src/transform.ts

@@ -213,6 +213,8 @@ export function transformCode(options: {
 
     if (ts.isModuleDeclaration(node)) {
       if (
+        node.modifiers?.[0] &&
+        node.modifiers[0].kind === ts.SyntaxKind.DeclareKeyword &&
         node.body &&
         ts.isModuleBlock(node.body) &&
         !node.body.statements.some(