Configuration

Repomix can be configured using a configuration file or command-line options. The configuration file allows you to customize various aspects of how Repomix processes and outputs your codebase.

Configuration File Formats

Repomix supports multiple configuration file formats for flexibility and ease of use.

Repomix will automatically search for configuration files in the following priority order:

1. TypeScript (repomix.config.ts, repomix.config.mts, repomix.config.cts)
2. JavaScript/ES Module (repomix.config.js, repomix.config.mjs, repomix.config.cjs)
3. JSON (repomix.config.json5, repomix.config.jsonc, repomix.config.json)

JSON Configuration

Create a configuration file in your project directory:

repomix --init

This will create a repomix.config.json file with default settings. You can also create a global configuration file that will be used as a fallback when no local configuration is found:

repomix --init --global

TypeScript Configuration

TypeScript configuration files provide the best developer experience with full type checking and IDE support.

Installation:

To use TypeScript or JavaScript configuration with defineConfig, you need to install Repomix as a dev dependency:

npm install -D repomix

Example:

// repomix.config.ts

  output: {
    filePath: 'output.xml',
    style: 'xml',
    removeComments: true,
  },
  ignore: {
    customPatterns: ['**/node_modules/**', '**/dist/**'],
  },
});

Benefits:

• ✅ Full TypeScript type checking in your IDE
• ✅ Excellent IDE autocomplete and IntelliSense
• ✅ Use dynamic values (timestamps, environment variables, etc.)

Dynamic Values Example:

// repomix.config.ts

// Generate timestamp-based filename
const timestamp = new Date().toISOString().slice(0, 19).replace(/[:.]/g, '-');

  output: {
    filePath: `output-${timestamp}.xml`,
    style: 'xml',
  },
});

JavaScript Configuration

JavaScript configuration files work the same as TypeScript, supporting defineConfig and dynamic values.

Configuration Options

The configuration file supports JSON5 syntax, which allows:

• Comments (both single-line and multi-line)
• Trailing commas in objects and arrays
• Unquoted property names
• More relaxed string syntax

Schema Validation

You can enable schema validation for your configuration file by adding the $schema property:

{
  "$schema": "https://repomix.com/schemas/latest/schema.json",
  "output": {
    "filePath": "repomix-output.xml",
    "style": "xml"
  }
}

This provides auto-completion and validation in editors that support JSON schema.

Example Configuration File

Here's an example of a complete configuration file (repomix.config.json):

{
  "$schema": "https://repomix.com/schemas/latest/schema.json",
  "input": {
    "maxFileSize": 50000000
  },
  "output": {
    "filePath": "repomix-output.xml",
    "style": "xml",
    "parsableStyle": false,
    "compress": false,
    "headerText": "Custom header information for the packed file.",
    "fileSummary": true,
    "directoryStructure": true,
    "files": true,
    "removeComments": false,
    "removeEmptyLines": false,
    "topFilesLength": 5,
    "showLineNumbers": false,
    "truncateBase64": false,
    "copyToClipboard": false,
    "includeEmptyDirectories": false,
    "git": {
      "sortByChanges": true,
      "sortByChangesMaxCommits": 100,
      "includeDiffs": false,
      "includeLogs": false,
      "includeLogsCount": 50
    }
  },
  "include": ["**/*"],
  "ignore": {
    "useGitignore": true,
    "useDefaultPatterns": true,
    // Patterns can also be specified in .repomixignore
    "customPatterns": [
      "additional-folder",
      "**/*.log"
    ],
  },
  "security": {
    "enableSecurityCheck": true
  },
  "tokenCount": {
    "encoding": "o200k_base"
  }
}

Configuration File Locations

Repomix looks for configuration files in the following order:

1. Local configuration file in the current directory (priority order: TS > JS > JSON)
   • TypeScript: repomix.config.ts, repomix.config.mts, repomix.config.cts
   • JavaScript: repomix.config.js, repomix.config.mjs, repomix.config.cjs
   • JSON: repomix.config.json5, repomix.config.jsonc, repomix.config.json
2. Global configuration file (priority order: TS > JS > JSON)
   • Windows:
     • TypeScript: %LOCALAPPDATA%\\Repomix\\repomix.config.ts, .mts, .cts
     • JavaScript: %LOCALAPPDATA%\\Repomix\\repomix.config.js, .mjs, .cjs
     • JSON: %LOCALAPPDATA%\\Repomix\\repomix.config.json5, .jsonc, .json
   • macOS/Linux:
     • TypeScript: ~/.config/repomix/repomix.config.ts, .mts, .cts
     • JavaScript: ~/.config/repomix/repomix.config.js, .mjs, .cjs
     • JSON: ~/.config/repomix/repomix.config.json5, .jsonc, .json

Command-line options take precedence over configuration file settings.

Include Patterns

Repomix supports specifying files to include using glob patterns. This allows for more flexible and powerful file selection:

• Use **/*.js to include all JavaScript files in any directory
• Use src/**/* to include all files within the src directory and its subdirectories
• Combine multiple patterns like ["src/**/*.js", "**/*.md"] to include JavaScript files in src and all Markdown files

You can specify include patterns in your configuration file:

{
  "include": ["src/**/*", "tests/**/*.test.js"]
}

Or use the --include command-line option for one-time filtering.

Ignore Patterns

Repomix offers multiple methods to set ignore patterns for excluding specific files or directories during the packing process:

• .gitignore: By default, patterns listed in your project's .gitignore files and .git/info/exclude are used. This behavior can be controlled with the ignore.useGitignore setting or the --no-gitignore CLI option.
• .ignore: You can use a .ignore file in your project root, following the same format as .gitignore. This file is respected by tools like ripgrep and the silver searcher, reducing the need to maintain multiple ignore files. This behavior can be controlled with the ignore.useDotIgnore setting or the --no-dot-ignore CLI option.
• Default patterns: Repomix includes a default list of commonly excluded files and directories (e.g., node_modules, .git, binary files). This feature can be controlled with the ignore.useDefaultPatterns setting or the --no-default-patterns CLI option. Please see defaultIgnore.ts for more details.
• .repomixignore: You can create a .repomixignore file in your project root to define Repomix-specific ignore patterns. This file follows the same format as .gitignore.
• Custom patterns: Additional ignore patterns can be specified using the ignore.customPatterns option in the configuration file. You can overwrite this setting with the -i, --ignore command line option.

Priority Order (from highest to lowest):

1. Custom patterns (ignore.customPatterns)
2. Ignore files (.repomixignore, .ignore, .gitignore, and .git/info/exclude):
   • When in nested directories, files in deeper directories have higher priority
   • When in the same directory, these files are merged in no particular order
3. Default patterns (if ignore.useDefaultPatterns is true and --no-default-patterns is not used)

This approach allows for flexible file exclusion configuration based on your project's needs. It helps optimize the size of the generated pack file by ensuring the exclusion of security-sensitive files and large binary files, while preventing the leakage of confidential information.

Note: Binary files are not included in the packed output by default, but their paths are listed in the "Repository Structure" section of the output file. This provides a complete overview of the repository structure while keeping the packed file efficient and text-based. See Binary Files Handling for more details.

Example of .repomixignore:

# Cache directories
.cache/
tmp/

# Build outputs
dist/
build/

#