diff --git a/README.md b/README.md
index 81ef13c73..e847f559b 100755
--- a/README.md
+++ b/README.md
@@ -72,7 +72,7 @@ Check example:  [React-tooltip Test](https://react-tooltip.netlify.com/)
 Global|Specific	|Type	|Values  |  Description
 |:---|:---|:---|:---|:----
  place	|   data-place  |  String  |  top, right, bottom, left | placement
- type	|   data-type  |  String  |  success, warning, error, info, light | theme
+ type	|   data-type  |  String  |  dark, success, warning, error, info, light | theme
  effect|   data-effect  |  String  |  float, solid | behaviour of tooltip
  event |   data-event  |  String  |  e.g. click | custom event to trigger tooltip
  eventOff |   data-event-off  |  String  |  e.g. click | custom event to hide tooltip (only makes effect after setting event attribute)
diff --git a/contributing.md b/contributing.md
index e2db610ee..f1ff238c7 100755
--- a/contributing.md
+++ b/contributing.md
@@ -33,3 +33,8 @@ We are using semantic-release instead of this:
 * `git tag -a 3.X.Y -m 3.X.Y` `git push --tags`
 * `npm publish`
 * add a version on the github release page, based on the tag
+
+
+## Typescript Type Definitions
+
+Ensure that any changes modifying the **props** or **staticmethods** are also reflected in the typescript type definitions file.
diff --git a/react-tooltip.d.ts b/react-tooltip.d.ts
new file mode 100644
index 000000000..02d82356e
--- /dev/null
+++ b/react-tooltip.d.ts
@@ -0,0 +1,115 @@
+import * as React from 'react';
+
+interface Offset {
+  top?: number;
+  right?: number;
+  left?: number;
+  bottom?: number;
+}
+
+type Place = 'top' | 'right' | 'bottom' | 'left';
+type Type = 'dark' | 'success' | 'warning' | 'error' | 'info' | 'light';
+type Effect = 'float' | 'solid';
+
+type VoidFunc = (...args: any[]) => void;
+type GetContentFunc = (toolTipStr: string) => React.ReactNode;
+type GetContent = GetContentFunc | [GetContentFunc, number];
+
+interface TooltipProps {
+  children?: React.ReactNode;
+  uuid?: string;
+  // Placement of tooltip
+  place?: Place;
+  // Tooltip styling theme
+  type?: Type;
+  // Behavior of tooltip
+  effect?: Effect;
+  // Global tooltip offset, e.g., offset={{ top: 10, left: 5 }}
+  offset?: Offset;
+  // Support <br /> to make explicitly multiline tooltip comments
+  multiline?: boolean;
+  // Add 1px white border
+  border?: boolean;
+  // Popup text color
+  textColor?: string;
+  // Popup background color
+  backgroundColor?: string;
+  // Popup border color
+  borderColor?: string;
+  // Popup arrow color
+  arrowColor?: string;
+  // Whether to inject the style header into the page
+  // dynamically (violates CSP style-src, but is a convenient default);
+  // default = true
+  insecure?: boolean;
+  // Extra style class
+  class?: string;
+  // Extra style class
+  className?: string;
+  // HTML id attribute
+  id?: string;
+  // Inject raw HTML? (This is a security risk)
+  html?: boolean;
+  // Time delay for hiding popup
+  delayHide?: number;
+  // Time delay for updating popup
+  delayUpdate?: number;
+  // Time delay for showing popup
+  delayShow?: number;
+  // Custom event to trigger tooltip
+  event?: string;
+  // Custom event to hide tooltip
+  // (this requires the event prop as well)
+  eventOff?: string;
+  // When set to true, custom event's propagation
+  // mode will be captue
+  isCapture?: boolean;
+  // Global event to hide tooltip
+  globalEventOff?: string;
+  // Function to dynamically generate the tooltip content
+  getContent?: GetContent;
+  // Callback after tooltip is shown
+  afterShow?: VoidFunc;
+  // Callback after tooltip is hidden
+  afterHide?: VoidFunc;
+  // Callback to override the tooltip position
+  overridePosition?: (
+    position: { left: number; top: number; },
+    currentEvent: Event,
+    currentTarget: EventTarget,
+    // node is the ref argument, and the wrapper
+    // is restricted to: div | span
+    refNode: null | HTMLDivElement | HTMLSpanElement,
+    place: Place,
+    desiredPlace: Place,
+    effect: Effect,
+    offset: Offset,
+  ) => ({ left: number; top: number; });
+  // Manually disable the tooltip behavior
+  disable?: boolean;
+  // Hide the tooltip when scrolling;
+  // default = true
+  scrollHide?: boolean;
+  // Hide the tooltip when risizing the window;
+  // default = true
+  resizeHide?: boolean;
+  // The tooltip parent component;
+  // default = 'div' 
+  wrapper?: 'div' | 'span';
+  // Listen to body events vs. individual events
+  bodyMode?: boolean;
+  // List of potential custom events to trigger the popup (in body mode)
+  possibleCustomEvents?: string;
+  // List of potential custom events to hide the popup (in body mode)
+  possibleCustomEventsOff?: string;
+  // Should the tooltip by clickable?
+  clickable?: boolean;
+}
+
+// ReactTooltip component is the default export
+export default class ReactTooltip extends React.Component<TooltipProps> {
+  // static methods
+  static show: (target: string) => {}; 
+  static hide: (target?: string) => {}; 
+  static rebuild: () => {}; 
+}