Working version

src/drawables/drawable.ts

@@ -0,0 +1,15 @@
+import { mat2d, vec2 } from 'gl-matrix';
+import { DrawableDescriptor } from './drawable-descriptor';
+
+export abstract class Drawable {
+  static get descriptor(): DrawableDescriptor {
+    throw new Error('This getter should be overriden');
+  }
+
+  public abstract distance(target: vec2): number;
+  public abstract serializeToUniforms(
+    uniforms: any,
+    scale: number,
+    transform: mat2d
+  ): void;
+}