cleanup

src/GlPlot2dComponent.tsx

@@ -21,8 +21,8 @@ import { GlPlot2dComponentProps,
  * @extends {skate.Component<GlPlot2dComponentProps>}
  */
 export class GlPlot2dComponent extends skate.Component<GlPlot2dComponentProps> {
- private gl: WebGLRenderingContext | null; // WebGL Context.
  private canvas: HTMLCanvasElement | null; // Canvas element we render to.
+ private gl: WebGLRenderingContext | null; // WebGL Context.
  private plot: any | null; // Plot object via gl-plot2d.
  private spikes: any | null; // Spikes object via gl-spikes2d.
 
@@ -152,12 +152,17 @@ export class GlPlot2dComponent extends skate.Component<GlPlot2dComponentProps> {
 
  /**
  * Function that is called after the element has been removed from the document.
+ * Items are destroyed in the reverse-order from which they are initialized.
  *
  * @memberOf GlPlot2dComponent
  */
  public disconnectedCallback(): void {
  super.disconnectedCallback();
 
+ if (this.spikes) {
+ this.spikes.dispose();
+ }
+
  if (this.plot) {
  this.plot.dispose();
  }