chore: remove unnecessary type assertions (#8386)

Author: Alfred-Skyblue

packages/compiler-dom/src/decodeHtmlBrowser.ts

@@ -8,9 +8,9 @@ export function decodeHtmlBrowser(raw: string, asAttr = false): string {
   }
   if (asAttr) {
     decoder.innerHTML = `<div foo="${raw.replace(/"/g, '&quot;')}">`
-    return decoder.children[0].getAttribute('foo') as string
+    return decoder.children[0].getAttribute('foo')!
   } else {
     decoder.innerHTML = raw
-    return decoder.textContent as string
+    return decoder.textContent!
   }
 }

packages/reactivity/src/ref.ts

@@ -342,7 +342,7 @@ class ObjectRefImpl<T extends object, K extends keyof T> {
 
   get value() {
     const val = this._object[this._key]
-    return val === undefined ? (this._defaultValue as T[K]) : val
+    return val === undefined ? this._defaultValue! : val
   }
 
   set value(newVal) {

packages/runtime-core/src/renderer.ts

@@ -584,7 +584,7 @@ function baseCreateRenderer(
     slotScopeIds: string[] | null,
     optimized: boolean
   ) => {
-    isSVG = isSVG || (n2.type as string) === 'svg'
+    isSVG = isSVG || n2.type === 'svg'
     if (n1 == null) {
       mountElement(
         n2,

packages/runtime-core/src/vnode.ts

@@ -681,7 +681,7 @@ export function cloneVNode<T extends RendererNode, U extends RendererElement>(
   if (__COMPAT__) {
     defineLegacyVNodeProperties(cloned as VNode)
   }
-  return cloned as any
+  return cloned
 }
 
 /**