Remove readonly from ctors

src/common/buffer/AttributeData.ts

@@ -14,6 +14,7 @@ export class AttributeData implements IAttributeData {
       value & 255
     ];
   }
+  
   static fromColorRGB(value: IColorRGB): number {
     return (value[0] & 255) << Attributes.RED_SHIFT | (value[1] & 255) << Attributes.GREEN_SHIFT | value[2] & 255;
   }

src/common/buffer/BufferSet.ts

@@ -27,8 +27,8 @@ export class BufferSet implements IBufferSet {
    * @param _terminal - The terminal the BufferSet will belong to
    */
   constructor(
-    readonly optionsService: IOptionsService,
-    readonly bufferService: IBufferService
+    optionsService: IOptionsService,
+    bufferService: IBufferService
   ) {
     this._normal = new Buffer(true, optionsService, bufferService);
     this._normal.fillViewportRows();