chore: mark stuff

docs/config/index.md

@@ -727,7 +727,7 @@ export default defineConfig({
 
   Another special value is `'esnext'` - which assumes native dynamic imports support and will transpile as little as possible:
 
-  - If the [`build.minify`](#build-minify) option is `'terser'`, `'esnext'` will be forced down to `'es2019'`.
+  - If the [`build.minify`](#build-minify) option is `'terser'`, `'esnext'` will be forced down to `'es2019'`. <!-- mark -->
   - In other cases, it will perform no transpilation at all.
 
   The transform is performed with esbuild and the value should be a valid [esbuild target option](https://esbuild.github.io/api/#target). Custom targets can either be a ES version (e.g. `es2015`), a browser with version (e.g. `chrome58`), or an array of multiple target strings.

docs/guide/assets.md

@@ -115,5 +115,8 @@ This pattern does not work if you are using Vite for Server-Side Rendering, beca
 :::
 
 ::: warning Esbuild target config is necessary
+
+<!-- mark -->
+
 This pattern needs esbuild target to be set to `es2020` or higher. `vite@2.x` use `es2019` as default target. Set [build-target](https://vitejs.dev/config/#build-target) and [optimizedeps.esbuildoptions.target](https://vitejs.dev/config/#optimizedeps-esbuildoptions) to `es2020` or higher if you intend to use this partten.
 :::

docs/guide/build.md

@@ -10,7 +10,7 @@ The production bundle assumes support for modern JavaScript. By default, Vite ta
 defaults and supports es6-module and supports es6-module-dynamic-import, not opera > 0, not samsung > 0, not and_qq > 0
 ```
 
-You can specify custom targets via the [`build.target` config option](/config/#build-target), where the lowest target is `es2015`.
+You can specify custom targets via the [`build.target` config option](/config/#build-target), where the lowest target is `es2015`. <!-- mark -->
 
 Note that by default, Vite only handles syntax transforms and **does not cover polyfills by default**. You can check out [Polyfill.io](https://polyfill.io/v3/) which is a service that automatically generates polyfill bundles based on the user's browser UserAgent string.
 

packages/vite/src/node/build.ts

@@ -246,15 +246,15 @@ export function resolveBuildOptions(raw?: BuildOptions): ResolvedBuildOptions {
     // Support browserslist
     // "defaults and supports es6-module and supports es6-module-dynamic-import",
     resolved.target = [
-      'es2019',
+      'es2020',
       'edge88',
       'firefox78',
       'chrome87',
       'safari13.1'
     ]
   } else if (resolved.target === 'esnext' && resolved.minify === 'terser') {
     // esnext + terser: limit to es2019 so it can be minified by terser
-    resolved.target = 'es2019'
+    resolved.target = 'es2020'
   }
 
   if (!resolved.cssTarget) {