Define component improvements

src/core/util/next-tick.ts

@@ -86,7 +86,8 @@ if (typeof Promise !== 'undefined' && isNative(Promise)) {
 }
 
 export function nextTick(): Promise<void>
-export function nextTick(cb: (...args: any[]) => any, ctx?: object): void
+export function nextTick<T>(this: T, cb: (this: T, ...args: any[]) => any): void
+export function nextTick<T>(cb: (this: T, ...args: any[]) => any, ctx: T): void
 /**
  * @internal
  */

types/common.d.ts

@@ -13,3 +13,9 @@ type Equal<Left, Right> =
   (<U>() => U extends Left ? 1 : 0) extends (<U>() => U extends Right ? 1 : 0) ? true : false;
 
 export type HasDefined<T> = Equal<T, unknown> extends true ? false : true
+
+// If the the type T accepts type "any", output type Y, otherwise output type N.
+// https://stackoverflow.com/questions/49927523/disallow-call-with-any/49928360#49928360
+export type IfAny<T, Y, N> = 0 extends 1 & T ? Y : N
+
+export type LooseRequired<T> = { [P in string & keyof T]: T[P] }

types/index.d.ts

@@ -30,7 +30,8 @@ export {
   VNode,
   VNodeComponentOptions,
   VNodeData,
-  VNodeDirective
+  VNodeDirective,
+  ComponentCustomProps
 } from './vnode'
 
 export * from './v3-manual-apis'
@@ -47,13 +48,15 @@ export {
   // v2 already has option with same name and it's for a single computed
   ComputedOptions as ComponentComputedOptions,
   MethodOptions as ComponentMethodOptions,
-  ComponentPropsOptions
+  ComponentPropsOptions,
+  ComponentCustomOptions
 } from './v3-component-options'
 export {
   ComponentInstance,
   ComponentPublicInstance,
-  ComponentRenderProxy
-} from './v3-component-proxy'
+  CreateComponentPublicInstance,
+  ComponentCustomProperties
+} from './v3-component-public-instance'
 export {
   // PropType,
   // PropOptions,

types/jsx.d.ts

@@ -1313,7 +1313,12 @@ type NativeElements = {
   >
 }
 
-import { VNode, VNodeData } from './vnode'
+import {
+  VNode,
+  VNodeData,
+  ComponentCustomProps,
+  AllowedComponentProps
+} from './vnode'
 
 declare global {
   namespace JSX {
@@ -1329,7 +1334,10 @@ declare global {
       // @ts-ignore suppress ts:2374 = Duplicate string index signature.
       [name: string]: any
     }
-    interface IntrinsicAttributes extends ReservedProps {}
+    interface IntrinsicAttributes
+      extends ReservedProps,
+        AllowedComponentProps,
+        ComponentCustomProps {}
   }
 }
 

types/options.d.ts

@@ -2,6 +2,7 @@ import { Vue, CreateElement, CombinedVueInstance } from './vue'
 import { VNode, VNodeData, VNodeDirective, NormalizedScopedSlot } from './vnode'
 import { SetupContext } from './v3-setup-context'
 import { DebuggerEvent } from './v3-generated'
+import { DefineComponent } from './v3-define-component'
 
 type Constructor = {
   new (...args: any[]): any
@@ -19,6 +20,7 @@ export type Component<
   | typeof Vue
   | FunctionalComponentOptions<Props>
   | ComponentOptions<never, Data, Methods, Computed, Props, SetupBindings>
+  | DefineComponent<any, any, any, any, any>
 
 type EsModule<T> = T | { default: T }
 
@@ -174,7 +176,10 @@ export interface ComponentOptions<
   el?: Element | string
   template?: string
   // hack is for functional component type inference, should not be used in user code
-  render?(createElement: CreateElement, hack: RenderContext<Props>): VNode
+  render?(
+    createElement: CreateElement,
+    hack: RenderContext<Props>
+  ): VNode | null | void
   renderError?(createElement: CreateElement, err: Error): VNode
   staticRenderFns?: ((createElement: CreateElement) => VNode)[]
 
@@ -198,6 +203,7 @@ export interface ComponentOptions<
     [key: string]:
       | Component<any, any, any, any>
       | AsyncComponent<any, any, any, any>
+      | DefineComponent<any, any, any, any, any, any, any, any, any, any>
   }
   transitions?: { [key: string]: object }
   filters?: { [key: string]: Function }