diff --git a/loglevel/loglevel-tests.ts b/loglevel/loglevel-tests.ts
new file mode 100644
index 0000000000..2c4f89733d
--- /dev/null
+++ b/loglevel/loglevel-tests.ts
@@ -0,0 +1,21 @@
+/// <reference path="loglevel.d.ts" />
+
+log.trace("Trace message");
+log.debug("Debug message");
+log.info("Info message");
+log.warn("Warn message");
+log.error("Error message");
+log.debug(["Hello", "world", 42]);
+
+log.setLevel(0);
+log.setLevel(0, false);
+
+log.setLevel("error");
+log.setLevel("error", false);
+
+log.setLevel(log.levels.WARN);
+log.setLevel(log.levels.WARN, false);
+
+var logging = log.noConflict();
+
+logging.error("still pretty easy");
diff --git a/loglevel/loglevel.d.ts b/loglevel/loglevel.d.ts
new file mode 100644
index 0000000000..01b80b7222
--- /dev/null
+++ b/loglevel/loglevel.d.ts
@@ -0,0 +1,102 @@
+// Type definitions for loglevel 1.3.1
+// Project: https://github.com/pimterry/loglevel
+// Definitions by: Stefan Profanter <https://github.com/Pro/>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+declare module loglevel {
+
+	/**
+	 * Log levels
+	 */
+	export enum levels {
+		TRACE = 0,
+		DEBUG = 1,
+		INFO = 2,
+		WARN = 3,
+		ERROR = 4,
+		SILENT = 5
+	}
+
+	/**
+	 * Output trace message to console.
+	 * This will also include a full stack trace
+	 *
+	 * @param msg any data to log to the console
+	 */
+	export function trace(msg:any):void;
+
+	/**
+	 * Output debug message to console including appropriate icons
+	 *
+	 * @param msg any data to log to the console
+	 */
+	export function debug(msg:any):void;
+
+	/**
+	 * Output info message to console including appropriate icons
+	 *
+	 * @param msg any data to log to the console
+	 */
+	export function info(msg:any):void;
+
+	/**
+	 * Output warn message to console including appropriate icons
+	 *
+	 * @param msg any data to log to the console
+	 */
+	export function warn(msg:any):void;
+
+	/**
+	 * Output error message to console including appropriate icons
+	 *
+	 * @param msg any data to log to the console
+	 */
+	export function error(msg:any):void;
+
+
+	/**
+	 * This disables all logging below the given level, so that after a log.setLevel("warn") call log.warn("something")
+	 * or log.error("something") will output messages, but log.info("something") will not.
+	 *
+	 * @param level 0=trace to 5=silent
+	 * @param persist Where possible the log level will be persisted. LocalStorage will be used if available, falling back
+	 *            to cookies if not. If neither is available in the current environment (i.e. in Node), or if you pass
+	 *            false as the optional 'persist' second argument, persistence will be skipped.
+	 */
+	export function setLevel(level:number, persist?:boolean):void;
+
+
+	/**
+	 * This disables all logging below the given level, so that after a log.setLevel("warn") call log.warn("something")
+	 * or log.error("something") will output messages, but log.info("something") will not.
+	 *
+	 * @param level as a string, like 'error' (case-insensitive)
+	 * @param persist Where possible the log level will be persisted. LocalStorage will be used if available, falling back
+	 *            to cookies if not. If neither is available in the current environment (i.e. in Node), or if you pass
+	 *            false as the optional 'persist' second argument, persistence will be skipped.
+	 */
+	export function setLevel(level:string, persist?:boolean):void;
+
+
+	/**
+	 * This disables all logging below the given level, so that after a log.setLevel("warn") call log.warn("something")
+	 * or log.error("something") will output messages, but log.info("something") will not.
+	 *
+	 * @param level as the value from the enum
+	 * @param persist Where possible the log level will be persisted. LocalStorage will be used if available, falling back
+	 *            to cookies if not. If neither is available in the current environment (i.e. in Node), or if you pass
+	 *            false as the optional 'persist' second argument, persistence will be skipped.
+	 */
+	export function setLevel(level:levels, persist?:boolean):void;
+
+	/**
+	 * If you're using another JavaScript library that exposes a 'log' global, you can run into conflicts with loglevel.
+	 * Similarly to jQuery, you can solve this by putting loglevel into no-conflict mode immediately after it is loaded
+	 * onto the page. This resets to 'log' global to its value before loglevel was loaded (typically undefined), and
+	 * returns the loglevel object, which you can then bind to another name yourself.
+	 */
+	export function noConflict():any;
+}
+
+declare
+var log:typeof loglevel;