diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 0000000..26296b5
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,66 @@
+interface Header {
+  name: string
+  size: number
+  mode: number
+  mtime: Date
+  type: 'file' | 'link' | 'symlink' | 'directory' | 'block-device' | 'character-device' | 'fifo' | 'contiguous-file'
+  linkname: string
+  uid: number
+  gid: number
+  uname: string
+  gname: string
+  devmajor: number
+  devminor: number
+  pax?: object
+}
+
+type HeaderForPack = Partial<Header> & {
+  name: string
+}
+
+interface Pack extends NodeJS.ReadableStream {
+  entry(header: HeaderForPack, callback?: (error?: Error) => void): Sink
+  entry(
+    header: HeaderForPack,
+    buffer: string | Buffer,
+    callback?: (error?: Error) => void
+  ): Sink
+  destroy(): void
+  finalize(): void
+}
+
+interface Sink extends NodeJS.WritableStream {
+}
+
+interface ExtractOptions {
+  filenameEncoding?: string
+}
+
+interface Source extends NodeJS.ReadableStream { 
+  header: Header
+  offset: number
+}
+
+interface Extract extends NodeJS.WritableStream {
+  on(
+    event: 'entry',
+    callback: (
+      header: Header,
+      stream: Source,
+      next: () => void
+    ) => void
+  ): void
+  on(event: 'close', callback: () => void)
+  on(event: 'finish', callback: () => void)
+  on(event: 'error', callback: (error: Error) => void)
+  destroy(error?: Error): void
+  [Symbol.asyncIterator](): AsyncIterableIterator<Source>
+}
+
+interface Module {
+  pack(): Pack
+  extract(options?: ExtractOptions): Extract
+}
+
+export function pack(): Pack
+export function extract(options?: ExtractOptions): Extract
diff --git a/package.json b/package.json
index e16048f..88c5e19 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "version": "3.1.6",
   "description": "tar-stream is a streaming tar parser and generator and nothing else. It operates purely using streams which means you can easily extract/parse tarballs without ever hitting the file system.",
   "main": "index.js",
+  "types": "index.d.ts",
   "files": [
     "*.js"
   ],