init component

node_modules/@vue/runtime-core/README.md

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+# @vue/runtime-core
+
+> This package is published only for typing and building custom renderers. It is NOT meant to be used in applications.
+
+For full exposed APIs, see `src/index.ts`.
+
+## Building a Custom Renderer
+
+```ts
+import { createRenderer } from '@vue/runtime-core'
+
+const { render, createApp } = createRenderer({
+  patchProp,
+  insert,
+  remove,
+  createElement,
+  // ...
+})
+
+// `render` is the low-level API
+// `createApp` returns an app instance with configurable context shared
+// by the entire app tree.
+export { render, createApp }
+
+export * from '@vue/runtime-core'
+```
+
+See `@vue/runtime-dom` for how a DOM-targeting renderer is implemented.