diff --git a/temp-fs/temp-fs-tests.ts b/temp-fs/temp-fs-tests.ts
new file mode 100644
index 000000000..9d01e31f3
--- /dev/null
+++ b/temp-fs/temp-fs-tests.ts
@@ -0,0 +1,31 @@
+// Copied from https://github.com/jakwings/node-temp-fs/blob/60a4d2586a81a7057bd4a395ec8c00b4100f84fe/README.md
+// and slightly modified.
+
+/// <reference path="temp-fs.d.ts" />
+
+// Create a tempfile in the system-provided tempdir.
+tempfs.open(function (err:any, file:tempfs.file) {
+    if (err) { throw err; }
+
+    console.log(file.path, file.fd);
+    // async
+    file.unlink(function () {
+        console.log('File delected');
+    });
+    // sync
+    // No problem even if unlink() is called twice.
+    file.unlink();
+});
+
+// Create a tempdir in current directory.
+tempfs.mkdir({
+    dir: '.',
+    recursive: true,  // It and its content will be remove recursively.
+    track: true  // Track this directory.
+}, function (err:any, dir:tempfs.dir) {
+    if (err) { throw err; }
+
+    console.log(dir.path, dir.recursive);
+    throw new Error('Since it is tracked, tempfs will remove it for you.');
+    dir.unlink();
+});
diff --git a/temp-fs/temp-fs.d.ts b/temp-fs/temp-fs.d.ts
new file mode 100644
index 000000000..a833c773f
--- /dev/null
+++ b/temp-fs/temp-fs.d.ts
@@ -0,0 +1,211 @@
+// Type definitions for temp-fs v0.9.8
+// Project: https://github.com/jakwings/node-temp-fs
+// Definitions by: MEDIA CHECK s.r.o. <http://www.mediacheck.cz/>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/**
+ * A temporary file and directory creator.
+ */
+declare module tempfs {
+
+    /**
+     * A tempdir.
+     */
+    interface dir {
+        /**
+         * The absolute path to the tempdir.
+         */
+        path: String;
+
+        /**
+         * Whether {@link dir#unlink} will remove the tempdir recursively.
+         */
+        recursive: Boolean;
+
+        /**
+         * A special function for you to remove the directory.
+         *
+         * If the directory is not tracked, it may throw when an error occurs or
+         * the first argument of the callback function will be an Error object.
+         *
+         * @param callback makes it asynchronous.
+         */
+        unlink(callback?:(error:Error)=>any): any;
+    }
+
+    /**
+     * A tempfile.
+     */
+    interface file {
+        /**
+         * The absolute path to the tempfile.
+         */
+        path: String;
+
+        /**
+         * An integer file descriptor.
+         */
+        fd: Number;
+
+        /**
+         * A special function for you to delete the file.
+         *
+         * If the file is not tracked, it may throw when an error occurs or the
+         * first argument of the callback function will be an Error object.
+         *
+         * @param callback makes it asynchronous.
+         */
+        unlink(callback?:(error:Error)=>any): any;
+    }
+
+    /**
+     * Options.
+     */
+    interface options {
+        /**
+         * Where to put the generated tempfile or tempdir.
+         *
+         * Also see {@link options#name}. Default: <code>tempfs.dir()</code>
+         */
+        dir?: String;
+
+        /**
+         * The maximum number of chance to retry before throwing an error.
+         *
+         * It should be a finite number. Default: 5
+         */
+        limit?: Number;
+
+        /**
+         * File mode (default: 0600) or directory mode (default: 0700) to use.
+         */
+        mode?: Number;
+
+        /**
+         * If set, join the two paths <code>{@link options#dir} ||
+         * tempfs.dir()</code> and {@link options#name} together and use the
+         * result as the customized filename/pathname.
+         */
+        name?: String;
+
+        /**
+         * The prefix for the generated random name.
+         *
+         * Default: "tmp-"
+         */
+        prefix?: String;
+
+        /**
+         * Whether {@link dir#unlink} should remove a directory recursively.
+         *
+         * Default: false
+         */
+        recursive?: Boolean;
+
+        /**
+         * The suffix for the generated random name.
+         *
+         * Default: ""
+         */
+        suffix?: String;
+
+        /**
+         * A string containing some capital letters Xs for substitution with
+         * random characters.
+         *
+         * Then it is used as part of the filename/dirname. Just like what you
+         * do with the <code>mktemp(3)</code> function in the C library.
+         */
+        template?: String;
+
+        /**
+         * If set to true, let temp-fs manage the the current file/directory for
+         * you even if the global tracking is off. If set to false, don't let
+         * temp-fs manage it even if the global tracking is on. Otherwise, use
+         * the current global setting.
+         */
+        track?: Boolean;
+    }
+
+    /**
+     * Remove all tracked files and directories asynchronously.
+     */
+    function clear(callback?:()=>any):any;
+
+    /**
+     * Remove all tracked files and directories synchronously.
+     */
+    function clearSync():any;
+
+    /**
+     * Return the path of a system-provided tempdir as
+     * <code>require('os').tmpdir()</code> does.
+     *
+     * You should not make any assumption about whether the path contains a
+     * trailing path separator, or it is a real path. On most system it is not a
+     * fixed path, and it can be changed by the user environment. When in doubt,
+     * check it first.
+     */
+    function dir():string;
+
+    /**
+     * Try to create a new tempdir asynchronously.
+     *
+     * @param callback function receives two arguments <code>error</code> and
+     *                 <code>dir</code>. If <code>error</code> is
+     *                 <code>null</code>, <code>dir</code> has the properties of
+     *                 {@link dir}.
+     */
+    function mkdir(options?:options, callback?:(err:any, dir:dir)=>any):any;
+
+    /**
+     * The synchronous version of {@link mkdir}.
+     *
+     * @throws when an error happens.
+     */
+    function mkdirSync(options?:options):dir;
+
+    /**
+     * Return a customized/random filename/dirname.
+     */
+    function name(options?:options):string;
+
+    /**
+     * Try to open a unique tempfile asynchronously.
+     *
+     * @param callback function receives two arguments <code>error</code> and
+     *                 <code>file</code>. If <code>error</code> is
+     *                 <code>null</code>, <code>file</code> has the properties
+     *                 of {@link file}.
+     */
+    function open(options?:options, callback?:(err:any, file:file)=>any):any;
+
+    /**
+     * The synchronous version of {@link open}.
+     *
+     * @throws when an error happens.
+     */
+    function openSync(options?:options):file;
+
+    /**
+     * Use it to switch global files/directories tracking on or off.
+     *
+     * Turn it on if you don't want to manually delete everything. When it is
+     * turned off, all recorded files and directories will not be removed but
+     * still kept in case it is turned on again before the program exits.
+     *
+     * This switch does not affect manually tracked files through
+     * {@link options#track}. They will be removed automatically on exit.
+     *
+     * <b>Note: When an uncaught exception occurs, all tracked temporary files
+     * and directories will be removed no matter it is on or off.</b>
+     */
+    function track(on?:Boolean):void;
+}
+
+/**
+ * A temporary file and directory creator.
+ */
+declare module "temp-fs" {
+    export = tempfs;
+}