Previously, the web runtime would deploy to the rive-js package on npm. We have since moved away from this one-package model and into a place where you can import from several different packages based on your API/rendering-level needs.
  • @rive-app/webgl
  • @rive-app/webgl-advanced
  • @rive-app/canvas
  • @rive-app/canvas-advanced
In addition to these new packages, there are *-single version packages for each of the above that have the WASM encoded in the JS. See the web runtime docs to help you decide which runtime package you may need for your project. We changed the package model to choose which renderer to use (i.e., CanvasRenderingContext2D vs. WebGL), impacting bundle size and performance. In addition, all of the new web runtime packages will support the latest Rive features, such as raster assets. In any case, there should be no changes in high-level API usage required as far as using the rive instance. You only need to change the package you install in your project and the associated places you import it. For instance, instead of the following integration: 
npm i rive-js

import rive from 'rive-js';

const foo = new rive.Rive({
  src: "https://cdn.rive.app/animations/vehicles.riv",
});
You could replace this with: 
npm i @rive-app/canvas 

import {Rive} from '@rive-app/canvas';

const foo = new Rive({
  src: "https://cdn.rive.app/animations/vehicles.riv",
});
Or, you can replace @rive-app/canvas with any of the new package outputs for web runtime that suit your need.