[@types/pixelmatch] Add missing types added in v5.0 (#36574)

types/pixelmatch/index.d.ts

@@ -1,4 +1,4 @@
-// Type definitions for pixelmatch 4.0
+// Type definitions for pixelmatch 5.0
 // Project: https://github.com/mapbox/pixelmatch#readme
 // Definitions by: Oleg Repin <https://github.com/iamolegga>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
@@ -20,11 +20,19 @@ declare function Pixelmatch(
   options?: Options,
 ): number;
 
+type RGBTuple = [number, number, number];
+
 interface Options {
   /** Matching threshold, ranges from 0 to 1. Smaller values make the comparison more sensitive. 0.1 by default. */
   readonly threshold?: number;
   /** If true, disables detecting and ignoring anti-aliased pixels. false by default. */
   readonly includeAA?: boolean;
+  /* Blending factor of unchanged pixels in the diff output. Ranges from 0 for pure white to 1 for original brightness. 0.1 by default. */
+  alpha?: number;
+  /* The color of anti-aliased pixels in the diff output. [255, 255, 0] by default. */
+  aaColor?: RGBTuple;
+  /* The color of differing pixels in the diff output. [255, 0, 0] by default. */
+  diffColor?: RGBTuple;
 }
 
 export = Pixelmatch;