Disable animations for BasicPlatform (offcreen)

src/core/core.controller.js

@@ -86,6 +86,7 @@ class Chart {
     const options = config.createResolver(config.chartOptionScopes(), this.getContext());
 
     this.platform = new (config.platform || _detectPlatform(initialCanvas))();
+    this.platform.updateConfig(config);
 
     const context = this.platform.acquireContext(initialCanvas, options.aspectRatio);
     const canvas = context && context.canvas;

src/platform/platform.base.js

@@ -72,6 +72,14 @@ export default class BasePlatform {
   isAttached(canvas) { // eslint-disable-line no-unused-vars
     return true;
   }
+
+  /**
+   * Updates config with platform specific requirements
+   * @param {import("../core/core.config").default} config
+   */
+  updateConfig(config) { // eslint-disable-line no-unused-vars
+    // no-op
+  }
 }
 
 /**

src/platform/platform.basic.js

@@ -17,4 +17,7 @@ export default class BasicPlatform extends BasePlatform {
     // https://github.com/chartjs/Chart.js/issues/2807
     return item && item.getContext && item.getContext('2d') || null;
   }
+  updateConfig(config) {
+    config.options.animation = false;
+  }
 }

test/specs/platform.basic.tests.js

@@ -8,6 +8,15 @@ describe('Platform.basic', function() {
     chart.destroy();
   });
 
+  it('should disable animations', function() {
+    const chart = acquireChart({type: 'line', options: {animation: {}}}, {useOffscreenCanvas: true});
+
+    expect(chart.options.animation).toEqual(false);
+
+    chart.destroy();
+  });
+
+
   it('supports choosing the BasicPlatform in a web worker', function(done) {
     const canvas = document.createElement('canvas');
     if (!canvas.transferControlToOffscreen) {

types/index.esm.d.ts

@@ -2016,6 +2016,11 @@ export class BasePlatform {
    * @returns {boolean} true if the canvas is attached to the platform, false if not.
    */
   isAttached(canvas: HTMLCanvasElement): boolean;
+  /**
+   * Updates config with platform specific requirements
+   * @param {ChartConfiguration} config
+   */
+  updateConfig(config: ChartConfiguration): void;
 }
 
 export class BasicPlatform extends BasePlatform {}