diff --git a/lib/index.d.ts b/lib/index.d.ts
new file mode 100644
index 0000000..8ece07c
--- /dev/null
+++ b/lib/index.d.ts
@@ -0,0 +1,166 @@
+// Type definitions for @hapi/inert
+// Project: https://github.com/hapijs/inert/
+// Definitions by: Steve Ognibene <https://github.com/nycdotnet>
+//                 Alexander James Phillips <https://github.com/AJamesPhillips>
+//                 Silas Rech <https://github.com/lenovouser>
+
+import { Plugin, Request, ResponseObject } from '@hapi/hapi';
+
+declare namespace inert {
+  type RequestHandler<T> = (request: Request) => T;
+
+  interface ReplyFileHandlerOptions {
+    /**
+     * confine - serve file relative to this directory and returns 403 Forbidden if the path resolves outside the confine directory.
+     * Defaults to true which uses the relativeTo route option as the confine. Set to false to disable this security feature.
+     */
+    confine?: boolean | string | undefined;
+    /**
+     * filename - an optional filename to specify if sending a 'Content-Disposition' header, defaults to the basename of path
+     */
+    filename?: string | undefined;
+    /**
+     * mode - specifies whether to include the 'Content-Disposition' header with the response. Available values:
+     *  * false - header is not included. This is the default value.
+     *  * 'attachment'
+     *  *'inline'
+     */
+    mode?: false | 'attachment' | 'inline' | undefined;
+    /**
+     * lookupCompressed - if true, looks for for a pre-compressed version of the file with the same filename with an extension, depending on the accepted encoding. Defaults to false.
+     */
+    lookupCompressed?: boolean | undefined;
+    /**
+     * lookupMap - an object which maps content encoding to expected file name extension. Defaults to `{ gzip: '.gz' }.
+     */
+    lookupMap?: { [index: string]: string } | undefined;
+    /**
+     * etagMethod - specifies the method used to calculate the ETag header response. Available values:
+     *  * 'hash' - SHA1 sum of the file contents, suitable for distributed deployments. Default value.
+     *  * 'simple' - Hex encoded size and modification date, suitable when files are stored on a single server.
+     *  * false - Disable ETag computation.
+     */
+    etagMethod?: 'hash' | 'simple' | false | undefined;
+    /**
+     * start - offset in file to reading from, defaults to 0.
+     */
+    start?: number | undefined;
+    /**
+     * end - offset in file to stop reading from. If not set, will read to end of file.
+     */
+    end?: number | undefined;
+  }
+
+  interface FileHandlerRouteObject extends ReplyFileHandlerOptions {
+    /**
+     * path - a path string or function as described above (required).
+     */
+    path: string | RequestHandler<string>;
+  }
+
+  interface DirectoryHandlerRouteObject {
+    /**
+     * path - (required) the directory root path (relative paths are resolved based on the route files configuration). Value can be:
+     * * a single path string used as the prefix for any resources requested by appending the request path parameter to the provided string.
+     * * an array of path strings. Each path will be attempted in order until a match is found (by following the same process as the single path string).
+     * * a function with the signature function(request) which returns the path string or an array of path strings.
+     *   If the function returns an error, the error is passed back to the client in the response.
+     */
+    path: string | string[] | RequestHandler<string | string[] | Error>;
+    /**
+     * index - optional boolean|string|string[], determines if an index file will be served if found in the folder when requesting a directory.
+     * The given string or strings specify the name(s) of the index file to look for. If true, looks for 'index.html'.
+     * Any falsy value disables index file lookup. Defaults to true.
+     */
+    index?: boolean | string | string[] | undefined;
+    /**
+     * listing - optional boolean, determines if directory listing is generated when a directory is requested without an index document. Defaults to false.
+     */
+    listing?: boolean | undefined;
+    /**
+     * showHidden - optional boolean, determines if hidden files will be shown and served. Defaults to false.
+     */
+    showHidden?: boolean | undefined;
+    /**
+     * redirectToSlash - optional boolean, determines if requests for a directory without a trailing slash are redirected to the same path with the missing slash.
+     * Useful for ensuring relative links inside the response are resolved correctly.
+     * Disabled when the server config router.stripTrailingSlash is true.Defaults to false.
+     */
+    redirectToSlash?: boolean | undefined;
+    /**
+     * lookupCompressed - optional boolean, instructs the file processor to look for the same filename with the '.gz' suffix for a pre-compressed
+     * version of the file to serve if the request supports content encoding. Defaults to false.
+     */
+    lookupCompressed?: boolean | undefined;
+    /**
+     * etagMethod - specifies the method used to calculate the ETag header response. Available values:
+     *  * 'hash' - SHA1 sum of the file contents, suitable for distributed deployments. Default value.
+     *  * 'simple' - Hex encoded size and modification date, suitable when files are stored on a single server.
+     *  * false - Disable ETag computation.
+     */
+    etagMethod?: 'hash' | 'simple' | false | undefined;
+    /**
+     * defaultExtension - optional string, appended to file requests if the requested file is not found. Defaults to no extension.
+     */
+    defaultExtension?: string | undefined;
+  }
+
+  /**
+   * inert accepts the following registration options
+   * @see {@link https://github.com/hapijs/inert#registration-options}
+   */
+  interface OptionalRegistrationOptions {
+    /**
+     * sets the maximum number of file etag hash values stored in the etags cache. Defaults to 10000.
+     */
+    etagsCacheMaxSize?: number | undefined;
+  }
+}
+
+declare const inert: { plugin: Plugin<inert.OptionalRegistrationOptions> };
+
+export = inert;
+
+declare module '@hapi/hapi' {
+  interface HandlerDecorations {
+    /**
+     * The file handler
+     *
+     * Generates a static file endpoint for serving a single file. file can be set to:
+     *  * a relative or absolute file path string (relative paths are resolved based on the route files configuration).
+     *  * a function with the signature function(request) which returns the relative or absolute file path.
+     *  * an object with one or more of the following options @see IFileHandler
+     * @see {@link https://github.com/hapijs/inert#the-file-handler}
+     */
+    file?: string | inert.RequestHandler<string> | inert.FileHandlerRouteObject | undefined;
+    /**
+     * The directory handler
+     *
+     * Generates a directory endpoint for serving static content from a directory.
+     * Routes using the directory handler must include a path parameter at the end of the path string
+     * (e.g. /path/to/somewhere/{param} where the parameter name does not matter).
+     * The path parameter can use any of the parameter options (e.g. {param} for one level files only,
+     * {param?} for one level files or the directory root, {param*} for any level, or {param*3} for a specific level).
+     * If additional path parameters are present, they are ignored for the purpose of selecting the file system resource.
+     * The directory handler is an object with the following options:
+     * @see {@link https://github.com/hapijs/inert#the-directory-handler}
+     */
+    directory?: inert.DirectoryHandlerRouteObject | undefined;
+    files?:
+      | {
+      /**
+       * Set the relative path
+       */
+      relativeTo: string;
+    }
+      | undefined;
+  }
+
+  interface ResponseToolkit {
+    /**
+     * Transmits a file from the file system. The 'Content-Type' header defaults to the matching mime type based on filename extension.
+     * @see {@link https://github.com/hapijs/inert#replyfilepath-options}
+     */
+    file(path: string, options?: inert.ReplyFileHandlerOptions): ResponseObject;
+  }
+}
diff --git a/package.json b/package.json
index de36283..5b5954a 100644
--- a/package.json
+++ b/package.json
@@ -4,6 +4,7 @@
   "version": "7.0.1",
   "repository": "https://github.com/hapijs/inert.git",
   "main": "lib/index.js",
+  "types": "lib/index.d.ts",
   "files": [
     "lib"
   ],
@@ -31,11 +32,14 @@
     "@hapi/code": "^9.0.3",
     "@hapi/eslint-plugin": "*",
     "@hapi/file": "^3.0.0",
-    "@hapi/hapi": "^21.2.1",
-    "@hapi/lab": "^25.1.2"
+    "@hapi/hapi": "^21.3.0",
+    "@hapi/lab": "^25.1.2",
+    "@types/node": "^14.18.37",
+    "joi": "^17.8.3",
+    "typescript": "^4.9.5"
   },
   "scripts": {
-    "test": "lab -f -a @hapi/code -t 100 -L",
+    "test": "lab -f -a @hapi/code -t 100 -L -Y",
     "test-cov-html": "lab -f -a @hapi/code -r html -o coverage.html"
   },
   "license": "BSD-3-Clause"
diff --git a/test/index.ts b/test/index.ts
new file mode 100644
index 0000000..1d23d96
--- /dev/null
+++ b/test/index.ts
@@ -0,0 +1,107 @@
+import * as path from 'path';
+
+import { Server, Lifecycle } from '@hapi/hapi';
+import * as inert from '../';
+import * as Lab from '@hapi/lab';
+
+const { expect: check } = Lab.types;
+
+const server = new Server({
+  port: 3000,
+  routes: {
+    files: {
+      relativeTo: path.join(__dirname, 'public'),
+    },
+  },
+});
+
+const provision = async () => {
+  await server.register(inert);
+  await server.register({ plugin: inert.plugin, options: { etagsCacheMaxSize: 100 } });
+
+  server.route({
+    method: 'GET',
+    path: '/{param*}',
+    handler: {
+      directory: {
+        path: '.',
+        redirectToSlash: true,
+        index: true,
+      },
+    },
+  });
+
+  server.route({
+    method: 'GET',
+    path: '/{param*}',
+    handler(request, h) {
+      check.type<Function>(h.file);
+      return h.file('awesome.png', {
+        confine: './images',
+      });
+    },
+  });
+
+  // https://github.com/hapijs/inert#serving-a-single-file
+  server.route({
+    method: 'GET',
+    path: '/{path*}',
+    handler: {
+      file: 'page.html',
+    },
+  });
+
+  // https://github.com/hapijs/inert#customized-file-response
+  server.route({
+    method: 'GET',
+    path: '/file',
+    handler(request, h) {
+      let path = 'plain.txt';
+      if (request.headers['x-magic'] === 'sekret') {
+        path = 'awesome.png';
+      }
+
+      return h.file(path).vary('x-magic');
+    },
+  });
+
+  const handler: Lifecycle.Method = (request, h) => {
+    const response = request.response;
+    if (response instanceof Error && response.output.statusCode === 404) {
+      return h.file('404.html').code(404);
+    }
+
+    return h.continue;
+  };
+
+  server.ext('onPostHandler', handler);
+
+  const file: inert.FileHandlerRouteObject = {
+    path: '',
+    confine: true,
+  };
+
+  const directory: inert.DirectoryHandlerRouteObject = {
+    path: '',
+    listing: true,
+  };
+
+  server.route({
+    path: '',
+    method: 'GET',
+    handler: {
+      file,
+      directory: {
+        path() {
+          if (Math.random() > 0.5) {
+            return '';
+          } else if (Math.random() > 0) {
+            return [''];
+          }
+          return new Error('');
+        },
+      },
+    },
+    options: { files: { relativeTo: __dirname } },
+  });
+};