types(runtime-core): refactor defineComponent (#1883)

packages/reactivity/src/baseHandlers.ts

@@ -32,17 +32,17 @@ const readonlyGet = /*#__PURE__*/ createGetter(true)
 const shallowReadonlyGet = /*#__PURE__*/ createGetter(true, true)
 
 const arrayInstrumentations: Record<string, Function> = {}
-;['includes', 'indexOf', 'lastIndexOf'].forEach(key => {
-  arrayInstrumentations[key] = function(...args: any[]): any {
-    const arr = toRaw(this) as any
-    for (let i = 0, l = (this as any).length; i < l; i++) {
+;(['includes', 'indexOf', 'lastIndexOf'] as const).forEach(key => {
+  arrayInstrumentations[key] = function(this: unknown[], ...args: unknown[]) {
+    const arr = toRaw(this)
+    for (let i = 0, l = this.length; i < l; i++) {
       track(arr, TrackOpTypes.GET, i + '')
     }
     // we run the method using the original args first (which may be reactive)
-    const res = arr[key](...args)
+    const res = (arr[key] as any)(...args)
     if (res === -1 || res === false) {
       // if that didn't work, run it again using raw values.
-      return arr[key](...args.map(toRaw))
+      return (arr[key] as any)(...args.map(toRaw))
     } else {
       return res
     }