fix(type): remove unnecessary type assertion (#766)

Co-authored-by: webfansplz <>

Author: webfansplz

src/apis/createElement.ts

@@ -22,4 +22,4 @@ export const createElement = function createElement(...args: any) {
   }
 
   return instance.$createElement.apply(instance, args)
-} as any as CreateElement
+} as CreateElement

src/apis/lifecycle.ts

@@ -23,7 +23,7 @@ function injectHookOption(
   hook: string,
   val: Function
 ) {
-  const options = vm.$options as any
+  const options = vm.$options as Record<string, unknown>
   const mergeFn = Vue.config.optionMergeStrategies[hook]
   options[hook] = mergeFn(options[hook], wrapHookCall(vm, val))
 }

src/apis/nextTick.ts

@@ -8,4 +8,4 @@ export const nextTick: NextTick = function nextTick(
   ...args: Parameters<NextTick>
 ) {
   return getVueConstructor()?.nextTick.apply(this, args)
-} as any
+}

src/apis/watch.ts

@@ -255,7 +255,7 @@ function createWatcher(
           fn(...args)
         },
         flushMode as 'pre' | 'post'
-      )) as any as T
+      )) as unknown as T
   }
 
   // effect watch
@@ -471,7 +471,7 @@ function traverse(value: unknown, seen: Set<unknown> = new Set()) {
     })
   } else if (isPlainObject(value)) {
     for (const key in value) {
-      traverse((value as any)[key], seen)
+      traverse(value[key], seen)
     }
   }
   return value

src/reactivity/reactive.ts

@@ -171,20 +171,20 @@ export function createObserver() {
 }
 
 export function shallowReactive<T extends object = any>(obj: T): T
-export function shallowReactive(obj: any): any {
+export function shallowReactive(obj: any) {
   if (!isObject(obj)) {
     if (__DEV__) {
       warn('"shallowReactive()" must be called on an object.')
     }
-    return obj as any
+    return obj
   }
 
   if (
     !(isPlainObject(obj) || isArray(obj)) ||
     isRaw(obj) ||
     !Object.isExtensible(obj)
   ) {
-    return obj as any
+    return obj
   }
 
   const observed = observe(isArray(obj) ? [] : {})
@@ -233,7 +233,7 @@ export function reactive<T extends object>(obj: T): UnwrapRef<T> {
     if (__DEV__) {
       warn('"reactive()" must be called on an object.')
     }
-    return obj as any
+    return obj
   }
 
   if (

src/reactivity/ref.ts

@@ -122,7 +122,7 @@ export function toRefs<T extends object>(obj: T): ToRefs<T> {
   if (__DEV__ && !isReactive(obj)) {
     warn(`toRefs() expects a reactive object but received a plain one.`)
   }
-  if (!isPlainObject(obj)) return obj as any
+  if (!isPlainObject(obj)) return obj
 
   const ret: any = {}
   for (const key in obj) {

src/runtimeContext.ts

@@ -168,7 +168,7 @@ function toVue3ComponentInstance(
     return instanceMapCache.get(vue2Instance)!
   }
 
-  const instance: ComponentInternalInstance = ({
+  const instance: ComponentInternalInstance = {
     proxy: vue2Instance,
     update: vue2Instance.$forceUpdate,
     uid: vue2Instance._uid,
@@ -177,8 +177,8 @@ function toVue3ComponentInstance(
     emit: vue2Instance.$emit.bind(vue2Instance),
 
     parent: null,
-    root: null as any,
-  } as unknown) as ComponentInternalInstance
+    root: null!, // to be immediately set
+  } as unknown as ComponentInternalInstance
 
   // map vm.$props =
   const instanceProps = [