integrate strip-json-comments for JSON configuration parsing

README.md

@@ -372,7 +372,7 @@ Here's an explanation of the configuration options:
 
 Example configuration:
 
-```json
+```json5
 {
   "output": {
     "filePath": "repomix-output.xml",
@@ -389,6 +389,7 @@ Example configuration:
   "ignore": {
     "useGitignore": true,
     "useDefaultPatterns": true,
+    // Patterns can also be specified in .repomixignore
     "customPatterns": ["additional-folder", "**/*.log"]
   },
   "security": {

biome.json

@@ -36,5 +36,10 @@
       "trailingCommas": "all",
       "semicolons": "always"
     }
+  },
+  "json": {
+    "parser": {
+      "allowComments": true
+    }
   }
 }

package.json

@@ -68,6 +68,7 @@
     "p-map": "^7.0.3",
     "picocolors": "^1.1.1",
     "strip-comments": "^2.0.1",
+    "strip-json-comments": "^5.0.1",
     "tiktoken": "^1.0.18",
     "zod": "^3.24.1"
   },

repomix.config.json

@@ -14,6 +14,7 @@
   "ignore": {
     "useGitignore": true,
     "useDefaultPatterns": true,
+    // ignore is specified in .repomixignore
     "customPatterns": []
   },
   "security": {

src/config/configLoad.ts

@@ -1,5 +1,6 @@
 import * as fs from 'node:fs/promises';
 import path from 'node:path';
+import stripJsonComments from 'strip-json-comments';
 import { z } from 'zod';
 import { RepomixError, rethrowValidationErrorIfZodError } from '../shared/errorHandle.js';
 import { logger } from '../shared/logger.js';
@@ -67,7 +68,7 @@ export const loadFileConfig = async (rootDir: string, argConfigPath: string | nu
 const loadAndValidateConfig = async (filePath: string): Promise<RepomixConfigFile> => {
   try {
     const fileContent = await fs.readFile(filePath, 'utf-8');
-    const config = JSON.parse(fileContent);
+    const config = JSON.parse(stripJsonComments(fileContent));
     return repomixConfigFileSchema.parse(config);
   } catch (error) {
     rethrowValidationErrorIfZodError(error, 'Invalid config schema');

tests/config/configLoad.test.ts

@@ -83,6 +83,28 @@ describe('configLoad', () => {
 
       await expect(loadFileConfig(process.cwd(), 'test-config.json')).rejects.toThrow('Invalid JSON');
     });
+
+    test('should parse config file with comments', async () => {
+      const configWithComments = `{
+        // Output configuration
+        "output": {
+          "filePath": "test-output.txt"
+        },
+        /* Ignore configuration */
+        "ignore": {
+          "useGitignore": true // Use .gitignore file
+        }
+      }`;
+
+      vi.mocked(fs.readFile).mockResolvedValue(configWithComments);
+      vi.mocked(fs.stat).mockResolvedValue({ isFile: () => true } as Stats);
+
+      const result = await loadFileConfig(process.cwd(), 'test-config.json');
+      expect(result).toEqual({
+        output: { filePath: 'test-output.txt' },
+        ignore: { useGitignore: true },
+      });
+    });
   });
 
   describe('mergeConfigs', () => {