fix: should throw error when no entry find with bundle dts

packages/plugin-dts/src/utils.ts

@@ -421,12 +421,20 @@ export function processSourceEntry(
     entryConfig &&
     Object.values(entryConfig).every((val) => typeof val === 'string')
   ) {
-    return Object.entries(entryConfig as Record<string, string>).map(
+    const entries = Object.entries(entryConfig as Record<string, string>).map(
       ([name, path]) => ({
         name,
         path,
       }),
     );
+
+    if (entries.length === 0) {
+      throw new Error(
+        `Can not find a valid entry for ${color.cyan('dts.bundle')} option, please check your entry config.`,
+      );
+    }
+
+    return entries;
   }
 
   throw new Error(

tests/integration/dts/bundle/no-entry/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "dts-bundle-no-entry-test",
+  "version": "1.0.0",
+  "private": true,
+  "type": "module"
+}

tests/integration/dts/bundle/no-entry/rslib.config.ts

@@ -0,0 +1,19 @@
+import { defineConfig } from '@rslib/core';
+import { generateBundleEsmConfig } from 'test-helper';
+
+export default defineConfig({
+  lib: [
+    generateBundleEsmConfig({
+      bundle: false,
+      dts: {
+        bundle: true,
+      },
+    }),
+  ],
+  source: {
+    entry: {
+      index: '../__fixtures__/src',
+    },
+    tsconfigPath: '../__fixtures__/tsconfig.json',
+  },
+});

tests/integration/dts/index.test.ts

@@ -377,6 +377,21 @@ describe('dts when bundle: true', () => {
 
     expect([indexEsm, indexCjs, sumEsm, sumCjs]).toMatchSnapshot();
   });
+
+  test('can not find a valid entry', async () => {
+    const fixturePath = join(__dirname, 'bundle', 'no-entry');
+    const { restore } = proxyConsole();
+
+    try {
+      await buildAndGetResults({ fixturePath, type: 'dts' });
+    } catch (err: any) {
+      expect(stripAnsi(err.message)).toMatchInlineSnapshot(
+        `"Can not find a valid entry for dts.bundle option, please check your entry config."`,
+      );
+    }
+
+    restore();
+  });
 });
 
 describe('dts when build: true', () => {