Who Cares About Metaverse. Developers: ES5 builds are disabled during development to take advantage of 2x faster build times. Please see the example below or our config docs if you would like to develop on a browser that does not fully support ES2017 and custom elements. Note that as of Stencil v2, ES5 builds and polyfills are disabled during production builds. You can enable these in your stencil.config.ts file.
When testing browsers it is recommended to always test in production mode, and ES5 builds should always be enabled during production builds. This is only an experiment and if it slows down app development then we will revert this and enable ES5 builds during dev. Enabling ES5 builds during development: npm run dev --es5 For stencil-component-starter, use: npm start --es5 Enabling full production builds during development: npm run dev --prod npm start --prod Current Browser's Support: Current Browser: Mozilla/5.0 (X11; Linux x86_64; rv:47.0) Gecko/20100101 Firefox/47.0.