Add documentation to typing

index.d.ts

@@ -8,22 +8,78 @@ declare module "react-visibility-sensor" {
     right?: number;
   }
 
+
   interface Props {
+    /** callback for whenever the element changes from being within the window viewport or not. */
     onChange?: (isVisible: boolean) => void;
+    /**
+     * boolean flag for enabling / disabling the sensor.  When `active !== true` the sensor will not fire the `onChange` callback.
+     * @default true
+     */
     active?: boolean;
-    partialVisibility?: boolean;
+    /**
+     * consider element visible if only part of it is visible. Also possible values are - 'top', 'right', 'bottom', 'left' - in case it's needed to detect when one of these become visible explicitly.
+     * @default false
+     */
+    partialVisibility?: boolean | 'top' | 'right' | 'bottom' | 'left';
+    /**
+     * with offset you can define amount of px from one side when the visibility should already change. So in example setting `offset={{top:10}}` means that the visibility changes hidden when there is less than 10px to top of the viewport. Offset works along with `partialVisibility`
+     * @default {}
+     */
     offset?: Shape;
+    /**
+     * consider element visible if only part of it is visible and a minimum amount of pixels could be set, so if at least 100px are in viewport, we mark element as visible.
+     * @default 0
+     */
     minTopValue?: number;
+    /**
+     * when this is true, it gives you the possibility to check if the element is in view even if it wasn't because of a user scroll
+     * @default true
+     */
     intervalCheck?: boolean;
+    /**
+     * integer, number of milliseconds between checking the element's position in relation the the window viewport. Making this number too low will have a negative impact on performance.
+     * @default 100
+     */
     intervalDelay?: number;
+    /**
+     * by making this true, the scroll listener is enabled.
+     * @default false
+     */
     scrollCheck?: boolean;
+    /**
+     * is the debounce rate at which the check is triggered. Ex: 250ms after the user stopped scrolling.
+     * @default 250
+     */
     scrollDelay?: number;
+    /**
+     * by specifying a value > -1, you are enabling throttle instead of the delay to trigger checks on scroll event. Throttle supercedes delay.
+     * @default -1
+     */
     scrollThrottle?: number;
+    /**
+     * by making this true, the resize listener is enabled. Resize listener only listens to the window.
+     * @default false
+     */
     resizeCheck?: boolean;
+    /**
+     * is the debounce rate at which the check is triggered. Ex: 250ms after the user stopped resizing.
+     * @default 250
+     */
     resizeDelay?: number;
+    /**
+     * by specifying a value > -1, you are enabling throttle instead of the delay to trigger checks on resize event. Throttle supercedes delay.
+     * @default -1
+     */
     resizeThrottle?: number;
-    containment?: any;
+    /** element to use as a viewport when checking visibility. Default behaviour is to use the browser window as viewport. */
+    containment?: Element;
+    /**
+     * if is set to true, wont execute on page load ( prevents react apps triggering elements as visible before styles are loaded )
+     * @default false
+     */
     delayedCall?: boolean;
+    /** can be a React element or a function.  If you provide a function, it will be called with 1 argument `{isVisible: ?boolean, visibilityRect: Object}` */
     children?:
       | React.ReactNode
       | ((