docs: shadowMode

Author: yyx990803

Diff for: docs/migrating.md

@@ -261,10 +261,6 @@ The following option has been renamed:
 
 - `transformToRequire` (now renamed to `transformAssetUrls`)
 
-The following option has been changed to `resourceQuery`:
-
-- `shadowMode` (now use inline resource queries, e.g. `foo.vue?shadow`)
-
 :::tip
 For a complete list of new options, see [Options Reference](./options.md).
 :::

Diff for: docs/options.md

@@ -67,3 +67,10 @@ sidebar: auto
 - default: `process.env.NODE_ENV === 'production'`
 
 Force production mode, which prohibits the loader from emitting code (e.g. hot-reload related code) that is development-only.
+
+## shadowMode
+
+- type: `boolean`
+- default: `false`
+
+Compiled the component for usage inside Shadow DOM. In this mode, the styles of the component will be injected into `this.$root.$options.shadowRoot` instead of the document head.