thank u win32.

Author: fi3ework

packages/core/src/cli/initConfig.ts

@@ -117,7 +117,7 @@ export const applyCliOptions = (
     if (externals.length > 0) output.externals = externals;
     if (options.distPath) {
       output.distPath = {
-        ...(output.distPath ?? {}),
+        ...(typeof output.distPath === 'object' ? output.distPath : {}),
         root: options.distPath,
       };
     }

tests/integration/cli/build/build.test.ts

@@ -1,3 +1,4 @@
+import os from 'node:os';
 import path from 'node:path';
 import { stripVTControlCharacters as stripAnsi } from 'node:util';
 import { describe, expect, test } from '@rstest/core';
@@ -150,33 +151,40 @@ describe('build command', async () => {
       runCliSync('build --format cjs', {
         cwd: fixturePath,
       }),
-    ).toThrowError(/rslib\.config not found in.*cli\/build\/no-config/);
+    ).toThrowError(/rslib\.config not found in.*cli[\\/]build[\\/]no-config/);
   });
 
   test('build options', async () => {
     const fixturePath = path.join(__dirname, 'options');
     await fse.remove(path.join(fixturePath, 'dist/ok'));
 
-    const stdout = runCliSync(
-      'build ' +
-        '--entry="./src/*" ' +
-        '--dist-path=dist/ok ' +
-        '--no-bundle ' +
-        '--format=esm ' +
-        `--syntax='["node 14", "Chrome 103"]' ` +
-        '--target=web ' +
-        '--dts=true ' +
-        '--externals=./bar ' +
-        '--minify=false ' +
-        '--auto-extension=false',
-      {
-        cwd: fixturePath,
-        env: {
-          ...process.env,
-          DEBUG: 'rslib',
-        },
+    const syntaxTargetsJson = JSON.stringify(['node 14', 'Chrome 103']);
+    const syntaxOption =
+      os.platform() === 'win32'
+        ? `--syntax="${syntaxTargetsJson.replace(/"/g, '\\"')}"`
+        : `--syntax='${syntaxTargetsJson}'`;
+
+    const command = [
+      'build',
+      '--entry="./src/*"',
+      '--dist-path=dist/ok',
+      '--no-bundle',
+      '--format=esm',
+      syntaxOption,
+      '--target=web',
+      '--dts=true',
+      '--externals=./bar',
+      '--minify=false',
+      '--auto-extension=false',
+    ].join(' ');
+
+    const stdout = runCliSync(command, {
+      cwd: fixturePath,
+      env: {
+        ...process.env,
+        DEBUG: 'rslib',
       },
-    );
+    });
 
     const rslibConfigText = stripAnsi(extractRslibConfig(stdout));
     expect(rslibConfigText).toMatchInlineSnapshot(`