feat: vapor component base (#5)

Co-authored-by: 三咲智子 Kevin Deng <sxzz@sxzz.moe>

packages/runtime-vapor/src/component.ts

@@ -0,0 +1,35 @@
+import { EffectScope } from '@vue/reactivity'
+
+import { Block, BlockFn } from './render'
+
+export interface ComponentInternalInstance {
+  uid: number
+  container: ParentNode
+  block: Block | null
+  scope: EffectScope
+
+  component: BlockFn
+  isMounted: boolean
+
+  // TODO: registory of provides, appContext, lifecycles, ...
+}
+
+let uid = 0
+export const createComponentInstance = (
+  component: BlockFn
+): ComponentInternalInstance => {
+  const instance: ComponentInternalInstance = {
+    uid: uid++,
+    block: null,
+    container: null!, // set on mount
+    scope: new EffectScope(true /* detached */)!,
+
+    component,
+    isMounted: false
+    // TODO: registory of provides, appContext, lifecycles, ...
+  }
+  return instance
+}
+
+// FIXME: duplicated with runtime-core
+export type Data = Record<string, unknown>

packages/runtime-vapor/src/render.ts

@@ -1,10 +1,11 @@
 import {
+  isArray,
   normalizeClass,
   normalizeStyle,
-  toDisplayString,
-  isArray
+  toDisplayString
 } from '@vue/shared'
-import { effectScope } from '@vue/reactivity'
+
+import { ComponentInternalInstance, createComponentInstance } from './component'
 
 export type Block = Node | Fragment | Block[]
 export type ParentBlock = ParentNode | Node[]
@@ -14,14 +15,10 @@ export type BlockFn = (props?: any) => Block
 export function render(
   comp: BlockFn,
   container: string | ParentNode
-): () => void {
-  const scope = effectScope()
-  const block = scope.run(() => comp())!
-  insert(block, (container = normalizeContainer(container)))
-  return () => {
-    scope.stop()
-    remove(block, container as ParentNode)
-  }
+): ComponentInternalInstance {
+  const instance = createComponentInstance(comp)
+  mountComponent(instance, (container = normalizeContainer(container)))
+  return instance
 }
 
 export function normalizeContainer(container: string | ParentNode): ParentNode {
@@ -30,6 +27,31 @@ export function normalizeContainer(container: string | ParentNode): ParentNode {
     : container
 }
 
+export const mountComponent = (
+  instance: ComponentInternalInstance,
+  container: ParentNode
+) => {
+  instance.container = container
+  const block = instance.scope.run(
+    () => (instance.block = instance.component())
+  )!
+  insert(block, instance.container)
+  instance.isMounted = true
+  // TODO: lifecycle hooks (mounted, ...)
+  // const { m } = instance
+  // m && invoke(m)
+}
+
+export const unmountComponent = (instance: ComponentInternalInstance) => {
+  const { container, block, scope } = instance
+  scope.stop()
+  block && remove(block, container)
+  instance.isMounted = false
+  // TODO: lifecycle hooks (unmounted, ...)
+  // const { um } = instance
+  // um && invoke(um)
+}
+
 export function insert(
   block: Block,
   parent: ParentNode,