diff --git a/README.md b/README.md
index b0de682..ad492d7 100644
--- a/README.md
+++ b/README.md
@@ -13,6 +13,7 @@ A lightweight, Promise-based Git client for Node.js that executes the git binary
 - Spawn mode for streaming operations
 - Built-in support for common Git operations
 - Minimal dependencies
+- Full TypeScript support with type definitions
 
 ## Requirements
 
@@ -104,6 +105,16 @@ const customGit = new git.Git({ gitDir: '/path/to/repo/.git' });
 const status = await customGit.status();
 ```
 
+## TypeScript Support
+
+The library includes TypeScript definitions for all methods and options. When using TypeScript, you'll get full type checking and autocompletion for:
+
+- Git instance configuration options
+- Command execution options
+- All git commands and their parameters
+- Spawn mode process types
+- Event handlers and callbacks
+
 ## API Reference
 
 ### Main Function
diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 0000000..863f1c5
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,115 @@
+declare module 'git-client' {
+  export interface GitOptions {
+    command?: string;
+    gitDir?: string;
+    workTree?: string;
+    indexFile?: string;
+  }
+
+  export interface ExecOptions {
+    /** Set custom git directory */
+    $gitDir?: string;
+    /** Set custom working tree */
+    $workTree?: string;
+    /** Set custom index file */
+    $indexFile?: string;
+    /** Enable spawn mode */
+    $spawn?: boolean;
+    /** Enable shell mode */
+    $shell?: boolean;
+    /** Return null instead of throwing on error */
+    $nullOnError?: boolean;
+    /** Callback for stdout in spawn mode */
+    $onStdout?: (line: string) => void;
+    /** Callback for stderr in spawn mode */
+    $onStderr?: (line: string) => void;
+    /** Enable passthrough mode */
+    $passthrough?: boolean;
+    /** Wait for process to complete */
+    $wait?: boolean;
+    /** Preserve environment variables */
+    $preserveEnv?: boolean;
+    /** Custom working directory */
+    $cwd?: string;
+    /** Custom environment variables */
+    $env?: Record<string, string>;
+    /** Additional options */
+    $options?: Record<string, any>;
+    /** Any git command options */
+    [key: string]: any;
+  }
+
+  export interface SpawnedProcess extends NodeJS.EventEmitter {
+    stdin: NodeJS.WritableStream;
+    stdout: NodeJS.ReadableStream;
+    stderr: NodeJS.ReadableStream;
+    captureOutput(input?: string | null): Promise<string>;
+    captureOutputTrimmed(input?: string | null): Promise<string>;
+  }
+
+  export interface TreeChild {
+    mode: string;
+    type: string;
+    hash: string;
+    name: string;
+  }
+
+  export class Git {
+    constructor(options?: GitOptions);
+
+    command: string;
+    gitDir: string | null;
+    workTree: string | null;
+    indexFile: string | null;
+    version: string | null;
+
+    static getGitDirFromEnvironment(): Promise<string>;
+    static getWorkTreeFromEnvironment(): Promise<string | null>;
+
+    getGitDir(): Promise<string>;
+    getWorkTree(): Promise<string | null>;
+    getIndexPath(): Promise<string>;
+    getVersion(): Promise<string | null>;
+    satisfiesVersion(range: string): Promise<boolean>;
+    requireVersion(range: string): Promise<this>;
+
+    readConfigSet(configPath: string): Promise<Set<string>>;
+    writeConfigSet(configPath: string, set: Set<string>): Promise<void>;
+    addToConfigSet(configPath: string, ...items: string[]): Promise<Set<string>>;
+    removeFromConfigSet(configPath: string, ...items: string[]): Promise<Set<string>>;
+
+    isHash(hash: string): boolean;
+    getTreeHash(ref: string, options?: { verify?: boolean }): Promise<string>;
+    hashObjectInternally(content: string | Buffer, options?: { type?: string; write?: boolean }): Promise<string>;
+    mktreeBatch(children: TreeChild[]): Promise<string>;
+    cleanup(): void;
+
+    exec(command: string, ...args: Array<string | ExecOptions>): Promise<string | SpawnedProcess>;
+
+    // Git commands as methods
+    add(options?: ExecOptions, ...files: string[]): Promise<string>;
+    commit(options?: ExecOptions, message?: string): Promise<string>;
+    push(options?: ExecOptions): Promise<string>;
+    pull(options?: ExecOptions): Promise<string>;
+    checkout(options?: ExecOptions, ref?: string): Promise<string>;
+    branch(options?: ExecOptions): Promise<string>;
+    merge(options?: ExecOptions, ref?: string): Promise<string>;
+    log(options?: ExecOptions): Promise<string>;
+    status(options?: ExecOptions): Promise<string>;
+    fetch(options?: ExecOptions): Promise<string>;
+    remote(options?: ExecOptions): Promise<string>;
+    reset(options?: ExecOptions): Promise<string>;
+    revert(options?: ExecOptions): Promise<string>;
+    tag(options?: ExecOptions): Promise<string>;
+    init(options?: ExecOptions): Promise<string>;
+    clone(options?: ExecOptions): Promise<string>;
+    diff(options?: ExecOptions): Promise<string>;
+    show(options?: ExecOptions): Promise<string>;
+    stash(options?: ExecOptions): Promise<string>;
+    revParse(options?: ExecOptions, ref?: string): Promise<string>;
+    [key: string]: any;
+  }
+
+  const git: Git & ((command: string, ...args: Array<string | ExecOptions>) => Promise<string | SpawnedProcess>);
+  export default git;
+}
diff --git a/package.json b/package.json
index 014057e..e45d0b8 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "version": "1.8.3",
   "description": "Promise-based git client that mostly just executes the git binary",
   "main": "index.js",
+  "types": "index.d.ts",
   "scripts": {
     "test": "ava --no-worker-threads"
   },
@@ -16,7 +17,8 @@
   },
   "keywords": [
     "git",
-    "promise"
+    "promise",
+    "typescript"
   ],
   "repository": "JarvusInnovations/git-client",
   "homepage": "https://github.com/JarvusInnovations/git-client",