diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 0000000..b0aa4e7
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,64 @@
+import { BaseLevels, BaseLogger } from 'anylogger'
+
+interface Logger extends BaseLogger<LevelNames>, LevelConstants {
+	levels: Record<keyof BaseLevels, number>;
+	/**
+	* The log level of this logger.
+	*/
+	level: LogLevel;
+	assert(...args: any[]): void
+	dir(...args: any[]): void
+	table(...args: any[]): void
+	time(...args: any[]): void
+	timeEnd(...args: any[]): void
+	verbose(message?: any, ...args: any[]): void
+	silly(message?: any, ...args: any[]): void
+	discard(...args: any[]): void
+}
+
+type ValueOf<T> = T[keyof T]
+
+type LevelNames = BaseLevels & {
+	assert: 0
+	dir: 0
+	table: 0
+	time: 0
+	timeEnd: 0
+	verbose: 4
+	silly: 6
+}
+
+interface LevelConstants {
+	NONE: 0
+	ERROR: 1
+	WARN: 2
+	INFO: 3
+	LOG: 4
+	DEBUG: 5
+	TRACE: 6
+}
+
+export type LogLevel = ValueOf<LevelConstants>
+
+export type LogFormatter = (logger: Logger, method: keyof LevelNames, args: unknown[]) => void
+
+export type LoggerExtender = (logger: Logger, parent: Logger) => void
+
+export interface Middleware {
+	outputs: {
+		custom: {
+			log(...args: unknown[]): void;
+		};
+	};
+	use: LogFormatter[];
+	formats: Record<string, (this: Logger, logger: Logger, method: keyof LevelNames, args: unknown[]) => void>;
+	formatters: {
+		custom(ctx: unknown): LogFormatter;
+	};
+}
+
+declare namespace Logger {
+	function use(options: Partial<Middleware>): void;
+}
+
+export default Logger;
diff --git a/mods/formats.d.ts b/mods/formats.d.ts
new file mode 100644
index 0000000..1006423
--- /dev/null
+++ b/mods/formats.d.ts
@@ -0,0 +1,3 @@
+import { LogFormatter } from '../';
+declare var formats: LogFormatter;
+export default formats;
diff --git a/mods/kurly.d.ts b/mods/kurly.d.ts
new file mode 100644
index 0000000..d70820a
--- /dev/null
+++ b/mods/kurly.d.ts
@@ -0,0 +1,4 @@
+import { Middleware } from '../'
+
+declare var kurly: Middleware;
+export default kurly;
diff --git a/types/tests.ts b/types/tests.ts
new file mode 100644
index 0000000..f424352
--- /dev/null
+++ b/types/tests.ts
@@ -0,0 +1,55 @@
+import { BaseLevels } from 'anylogger'
+import anylogger from 'anylogger'
+import ulog from 'ulog';
+import formats from 'ulog/mods/formats'
+import kurly from 'ulog/mods/kurly'
+
+const log = anylogger('my-app') as ulog;
+log('Logging is easy!')
+
+if (log.level >= log.INFO) {
+	log.info('This message will be logged')
+}
+log.level = log.WARN
+log.info('This info message will NOT be logged.')
+log.warn('This warning message WILL be logged.')
+log.level = log.NONE
+log.error('Logging is completely disabled.')
+
+ulog.use({
+	outputs: {
+		custom: {
+			log() {
+				var args = [].slice.call(arguments)
+				args.shift('Custom!!')
+				console.log.apply(console, args)
+			}
+		}
+	},
+	use: [formats],
+	formats: {
+		cool(logger) {
+			// will be called on logger creation/extension
+			// replace the default log methods with formatters
+			// use bind so we leave the call stack intact.
+			// only works for static info like our 'Cool!' message
+			for (var level in this.levels) {
+				const lvl = level as keyof BaseLevels;
+				logger[lvl] = logger[lvl].bind(logger, 'Cool!')
+			}
+			// don't forget to format the method to discard to the drain as well!
+			logger.discard = logger.discard.bind(logger, 'Cool!')
+		}
+	}
+})
+
+ulog.use(kurly)
+ulog.use({
+	formatters: {
+		custom(ctx) {
+			return function (rec) {
+				return 'Custom!'
+			}
+		}
+	}
+})
\ No newline at end of file
diff --git a/types/tsconfig.json b/types/tsconfig.json
new file mode 100644
index 0000000..79500b0
--- /dev/null
+++ b/types/tsconfig.json
@@ -0,0 +1,23 @@
+{
+	"include": [
+		"../**/*.ts"
+	],
+	"compilerOptions": {
+		"module": "commonjs",
+		"lib": [
+			"dom",
+			"es6"
+		],
+		"noImplicitAny": true,
+		"noImplicitThis": true,
+		"strictNullChecks": true,
+		"strictFunctionTypes": true,
+		"baseUrl": "../../",
+		"typeRoots": [
+			"../../"
+		],
+		"types": [],
+		"noEmit": true,
+		"forceConsistentCasingInFileNames": true
+	}
+}
\ No newline at end of file