Lint the browser compatibility of your code. Browser targets are configured using a browser list. You can configure browser targets in your package.json. If no configuration is found, browser list defaults to "> 0.5%, last 2 versions, Firefox ESR, not dead". Add polyfills to the settings section of your eslint config. Append the name of the object and the property if one exists. Toolchains for native platforms, like iOS and Android, have had API linting from the start. It's about time...