diff --git a/index.d.ts b/index.d.ts
index f1e3913..2214cd5 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -1,56 +1,91 @@
-import * as React from 'react';
-import { ObjectOverwrite } from 'typelevel-ts';
-import { ImageProperties, ImageStatic } from 'react-native';
+import * as React from 'react'
+import { FlexStyle, LayoutChangeEvent, ShadowStyleIOS, StyleProp, TransformsStyle } from 'react-native'
 
 declare namespace FastImage {
 
-  export namespace priority {
-    type low = 'low';
-    type normal = 'normal';
-    type high = 'high';
-  }
+    export namespace priority {
+        type low = 'low'
+        type normal = 'normal'
+        type high = 'high'
+    }
 
-  type priority =
-    FastImage.priority.low |
-    FastImage.priority.normal |
-    FastImage.priority.high;
+    type priority =
+        FastImage.priority.low |
+        FastImage.priority.normal |
+        FastImage.priority.high
 
-  export namespace resizeMode {
-    type contain = 'contain';
-    type cover = 'cover';
-    type stretch = 'stretch';
-    type center = 'center';
-  }
+    export namespace resizeMode {
+        type contain = 'contain'
+        type cover = 'cover'
+        type stretch = 'stretch'
+        type center = 'center'
+    }
 
-  export type resizeMode =
-    FastImage.resizeMode.contain |
-    FastImage.resizeMode.cover |
-    FastImage.resizeMode.stretch |
-    FastImage.resizeMode.center
+    export type resizeMode =
+        FastImage.resizeMode.contain |
+        FastImage.resizeMode.cover |
+        FastImage.resizeMode.stretch |
+        FastImage.resizeMode.center
 }
 
 export type FastImageSource = {
-  uri?: string,
-  headers?: object;
-  priority?: FastImage.priority;
-};
-
-export type FastImageProperties = ObjectOverwrite<ImageProperties, {
-  source: FastImageSource | number,
-  resizeMode?: FastImage.resizeMode;
-  onLoadStart?(): void;
-  onprogress?(event: any): void;
-  onLoad?(): void;
-  onError?(): void;
-  onLoadEnd?(): void;
-}>;
-
-interface FastImageStatic extends React.ComponentClass<FastImageProperties> {
-  resizeMode: FastImage.resizeMode;
-  preload(sources: Array<FastImageProperties['source']>): void;
+    uri?: string,
+    headers?: object
+    priority?: FastImage.priority
 }
 
-declare var FastImage: FastImageStatic;
-type FastImage = FastImageStatic;
+export interface ImageStyle extends FlexStyle, TransformsStyle, ShadowStyleIOS {
+    backfaceVisibility?: 'visible' | 'hidden'
+    backgroundColor?: string
+    borderColor?: string
+    overlayColor?: string
+    tintColor?: string
+    opacity?: number
+}
 
-export default FastImage;
+export interface FastImageProperties {
+    source: FastImageSource | number
+    resizeMode?: FastImage.resizeMode
+
+    onLoadStart?(): void
+
+    onProgress?(event: any): void
+
+    onLoad?(): void
+
+    onError?(): void
+
+    onLoadEnd?(): void
+
+    /**
+     * onLayout function
+     *
+     * Invoked on mount and layout changes with
+     *
+     * {nativeEvent: { layout: {x, y, width, height}}}.
+     */
+    onLayout?: (event: LayoutChangeEvent) => void;
+
+    /**
+     *
+     * Style
+     */
+    style?: StyleProp<ImageStyle>;
+
+    /**
+     * A unique identifier for this element to be used in UI Automation testing scripts.
+     */
+    testID?: string;
+}
+
+interface FastImageStatic extends React.ComponentClass<FastImageProperties> {
+    resizeMode: FastImage.resizeMode
+    priority: FastImage.priority
+
+    preload(sources: FastImageSource[]): void
+}
+
+declare var FastImage: FastImageStatic
+type FastImage = FastImageStatic
+
+export default FastImage