diff --git a/src/index.d.ts b/src/index.d.ts
new file mode 100644
index 0000000..e54d857
--- /dev/null
+++ b/src/index.d.ts
@@ -0,0 +1,71 @@
+import * as fs from "fs";
+import { format}  from 'util';
+import { EventEmitter }  from 'events';
+
+declare let Colors: Color;
+declare let isElectronRenderer: boolean;
+declare let isNodejs: boolean;
+declare let GlobalLogLevel: string;
+declare let GlobalLogfile: string;
+declare let GlobalEvents: EventEmitter;
+declare const defaultOptions: Options;
+
+export interface Color {
+  'Black':   any,
+  'Red':     any,
+  'Green':   any,
+  'Yellow':  any,
+  'Blue':    any,
+  'Magenta': any,
+  'Cyan':    any,
+  'Grey':    any,
+  'White':   any,
+  'Default': any,
+}
+
+export enum LogLevels {
+  'DEBUG'= 'DEBUG',
+  'INFO'=  'INFO',
+  'WARN'=  'WARN',
+  'ERROR'= 'ERROR',
+  'NONE'=  'NONE',
+}
+
+export interface Options {
+  useColors?: boolean,
+  color?: any,
+  showTimestamp?: boolean,
+  useLocalTime?: boolean,
+  showLevel?: boolean,
+  filename?: string,
+  appendFile?: boolean,
+}
+
+interface Format {
+  timestamp: string,
+  level: string,
+  category: string,
+  text: string,
+}
+
+declare class Logger{
+  constructor(category: string, options: Options);
+
+  options: Options;
+  debug(text: string): void;
+  log(text: string): void;
+  info(text: string): void;
+  warn(text: string): void;
+  error(text: string): void;
+
+  _write(level: string, text: string): void;
+  _format(level: string, text: string): Format;
+  _createLogMessage(level: string, text: string, timestampFormat: string, levelFormat: string, categoryFormat: string, textFormat: string): string;
+  _shouldLog(level: string): boolean;
+}
+
+declare const setLogLevel: (level: string) => void;
+declare const setLogfile: (filename: string) => void;
+declare const create: (category: string, options: Options) => Logger;
+declare const forceBrowserMode: (force: boolean) => void;
+declare var events: EventEmitter;