Add AVIF image support

packages/react-scripts/config/webpack.config.js

@@ -384,6 +384,17 @@ module.exports = function (webpackEnv) {
           // match the requirements. When no loader matches it will fall
           // back to the "file" loader at the end of the loader list.
           oneOf: [
+            // TODO: Merge this config once `image/avif` is in the mime-db
+            // https://github.com/jshttp/mime-db
+            {
+              test: [/\.avif$/],
+              loader: require.resolve('url-loader'),
+              options: {
+                limit: imageInlineSizeLimit,
+                mimetype: 'image/avif',
+                name: 'static/media/[name].[hash:8].[ext]',
+              },
+            },
             // "url" loader works like "file" loader except that it embeds assets
             // smaller than specified limit in bytes as data URLs to avoid requests.
             // A missing `test` is equivalent to a match.

packages/react-scripts/lib/react-app.d.ts

@@ -9,6 +9,11 @@ declare namespace NodeJS {
   }
 }
 
+declare module '*.avif' {
+  const src: string;
+  export default src;
+}
+
 declare module '*.bmp' {
   const src: string;
   export default src;