From a67c19be85df49fd923b8175beb7f1c75c2e5c24 Mon Sep 17 00:00:00 2001
From: KonstantinLukaschenko <k.lukaschenko@googlemail.com>
Date: Thu, 22 Aug 2019 23:44:08 +0200
Subject: [PATCH] [blueimp-load-image] enhanced load image callback with
 metadata argument (#37848)

* extended loadimagecallback with metadata argument.

* lint.

* extended unit test.

* cleanup test.

* polishing.
---
 .../blueimp-load-image-tests.ts               |  8 ++++++--
 types/blueimp-load-image/index.d.ts           | 19 ++++++++++++++++++-
 2 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/types/blueimp-load-image/blueimp-load-image-tests.ts b/types/blueimp-load-image/blueimp-load-image-tests.ts
index 112a407aa2..4ede678f09 100644
--- a/types/blueimp-load-image/blueimp-load-image-tests.ts
+++ b/types/blueimp-load-image/blueimp-load-image-tests.ts
@@ -1,7 +1,9 @@
-import loadImage from 'blueimp-load-image';
+import loadImage, { MetaData } from 'blueimp-load-image';
 
 // Test image taken from package tests: https://github.com/blueimp/JavaScript-Load-Image/blob/master/test/test.js
 
+// 2x1px JPEG (color white, with the Exif orientation flag set to 6 and the
+// IPTC ObjectName (2:5) set to 'objectname'):
 const b64DataJPEG =
   '/9j/4AAQSkZJRgABAQEAYABgAAD/4QAiRXhpZgAASUkqAAgAAAABABIBAwABAAAA' +
   'BgASAAAAAAD/7QAsUGhvdG9zaG9wIDMuMAA4QklNBAQAAAAAAA8cAgUACm9iamVj' +
@@ -20,7 +22,9 @@ const b64DataJPEG =
   '2uLj5OXm5+jp6vLz9PX29/j5+v/aAAwDAQACEQMRAD8A/v4ooooA/9k=';
 const imageUrlJPEG = 'data:image/jpeg;base64,' + b64DataJPEG;
 
-loadImage(imageUrlJPEG, (canvas: HTMLCanvasElement): void => {
+loadImage(imageUrlJPEG, (image: HTMLCanvasElement | HTMLImageElement, data?: MetaData): void => {
+  const canvas = image as HTMLCanvasElement;
+  console.log(data);
   canvas.toBlob((blob: Blob | null): void => {
     const url = canvas.toDataURL("image/png");
     console.log(url);
diff --git a/types/blueimp-load-image/index.d.ts b/types/blueimp-load-image/index.d.ts
index 9258bd3791..a3f8bf2090 100644
--- a/types/blueimp-load-image/index.d.ts
+++ b/types/blueimp-load-image/index.d.ts
@@ -1,11 +1,28 @@
 // Type definitions for blueimp-load-image 2.23
 // Project: https://github.com/blueimp/JavaScript-Load-Image
 // Definitions by: Evan Kesten <https://github.com/ebk46>
+//                 Konstantin Lukaschenko <https://github.com/KonstantinLukaschenko>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 /// <reference types="node" />
 
-export type LoadImageCallback = (canvas: HTMLCanvasElement) => void;
+export type LoadImageCallback = (image: HTMLCanvasElement | HTMLImageElement, data?: MetaData) => void;
+
+export interface Exif {
+    [tag: number]: number | string | string[];
+}
+
+export interface Iptc {
+    [tag: number]: number | string | string[];
+}
+
+export interface MetaData {
+    originalWidth?: number;
+    originalHeight?: number;
+    imageHead?: ArrayBuffer | Uint8Array;
+    exif?: Exif;
+    iptc?: Iptc;
+}
 
 export interface BasicOptions {
     maxWidth?: number; maxHeight?: number;