feat: Prefetch image and return the base64/blob string

README.md

@@ -161,6 +161,24 @@ const urls = ["https://..../image.jpg", "https://..../image2.jpg", "https://....
  CacheManager.prefetch(urls); // prefetch mutliple images
 ```
 
+#### Prefetch Image(s) and return blob/base64:
+Accepts 2 parameters:
+
+| Parameter | Type     | Description                                                                            |
+|-----------|----------|----------------------------------------------------------------------------------------|
+| `image`   | `String` | (Required) uri of remote image                                                         |
+| `options` | `Object` | (Optional) custom options for the fetch image http request eg. `{headers:{}, body:{}}` |
+
+
+```tsx
+import { CacheManager } from '@georstat/react-native-image-cache';
+
+const url = "https://..../image.jpg"
+
+ CacheManager.prefetchBlob(url).then(response => console.log(response)); // response is the base64 string
+
+```
+
 #### Clear local cache:
 
 ```tsx

src/CacheManager.ts

@@ -164,6 +164,18 @@ export default class CacheManager {
     }
   }
 
+  static async prefetchBlob(
+    source: string,
+    options?: DownloadOptions
+  ): Promise<string | undefined> {
+    const path = await CacheManager.get(source, options).getPath();
+    if (path) {
+      const blob = await FileSystem.readFile(path, 'base64');
+      return blob;
+    }
+    return undefined;
+  }
+
   static async pruneCache() {
     // If cache directory does not exist yet there's no need for pruning.
     if (!(await CacheManager.getCacheSize())) {