fix(types): prefer normal component over functional one (vuejs#7687)

Author: HerringtonDarkholme

types/options.d.ts

@@ -31,20 +31,21 @@ export type Accessors<T> = {
   [K in keyof T]: (() => T[K]) | ComputedOptions<T[K]>
 }
 
+type DataDef<Data, Props, V> = Data | ((this: Readonly<Props> & V) => Data)
 /**
  * This type should be used when an array of strings is used for a component's `props` value.
  */
 export type ThisTypedComponentOptionsWithArrayProps<V extends Vue, Data, Methods, Computed, PropNames extends string> =
   object &
-  ComponentOptions<V, Data | ((this: Readonly<Record<PropNames, any>> & V) => Data), Methods, Computed, PropNames[]> &
+  ComponentOptions<V, DataDef<Data, Record<PropNames, any>, V>, Methods, Computed, PropNames[], Record<PropNames, any>> &
   ThisType<CombinedVueInstance<V, Data, Methods, Computed, Readonly<Record<PropNames, any>>>>;
 
 /**
  * This type should be used when an object mapped to `PropOptions` is used for a component's `props` value.
  */
 export type ThisTypedComponentOptionsWithRecordProps<V extends Vue, Data, Methods, Computed, Props> =
   object &
-  ComponentOptions<V, Data | ((this: Readonly<Props> & V) => Data), Methods, Computed, RecordPropsDefinition<Props>> &
+  ComponentOptions<V, DataDef<Data, Props, V>, Methods, Computed, RecordPropsDefinition<Props>, Props> &
   ThisType<CombinedVueInstance<V, Data, Methods, Computed, Readonly<Props>>>;
 
 type DefaultData<V> =  object | ((this: V) => object);
@@ -56,7 +57,8 @@ export interface ComponentOptions<
   Data=DefaultData<V>,
   Methods=DefaultMethods<V>,
   Computed=DefaultComputed,
-  PropsDef=PropsDefinition<DefaultProps>> {
+  PropsDef=PropsDefinition<DefaultProps>,
+  Props=DefaultProps> {
   data?: Data;
   props?: PropsDef;
   propsData?: object;
@@ -66,7 +68,8 @@ export interface ComponentOptions<
 
   el?: Element | string;
   template?: string;
-  render?(createElement: CreateElement): VNode;
+  // hack is for funcitonal component type inference, should not used in user code
+  render?(createElement: CreateElement, hack: RenderContext<Props>): VNode;
   renderError?: (h: () => VNode, err: Error) => VNode;
   staticRenderFns?: ((createElement: CreateElement) => VNode)[];
 

types/vue.d.ts

@@ -82,10 +82,10 @@ export interface VueConstructor<V extends Vue = Vue> {
   new <Data = object, Methods = object, Computed = object, Props = object>(options?: ThisTypedComponentOptionsWithRecordProps<V, Data, Methods, Computed, Props>): CombinedVueInstance<V, Data, Methods, Computed, Record<keyof Props, any>>;
   new (options?: ComponentOptions<V>): CombinedVueInstance<V, object, object, object, Record<keyof object, any>>;
 
-  extend<PropNames extends string = never>(definition: FunctionalComponentOptions<Record<PropNames, any>, PropNames[]>): ExtendedVue<V, {}, {}, {}, Record<PropNames, any>>;
-  extend<Props>(definition: FunctionalComponentOptions<Props, RecordPropsDefinition<Props>>): ExtendedVue<V, {}, {}, {}, Props>;
   extend<Data, Methods, Computed, PropNames extends string = never>(options?: ThisTypedComponentOptionsWithArrayProps<V, Data, Methods, Computed, PropNames>): ExtendedVue<V, Data, Methods, Computed, Record<PropNames, any>>;
   extend<Data, Methods, Computed, Props>(options?: ThisTypedComponentOptionsWithRecordProps<V, Data, Methods, Computed, Props>): ExtendedVue<V, Data, Methods, Computed, Props>;
+  extend<PropNames extends string = never>(definition: FunctionalComponentOptions<Record<PropNames, any>, PropNames[]>): ExtendedVue<V, {}, {}, {}, Record<PropNames, any>>;
+  extend<Props>(definition: FunctionalComponentOptions<Props, RecordPropsDefinition<Props>>): ExtendedVue<V, {}, {}, {}, Props>;
   extend(options?: ComponentOptions<V>): ExtendedVue<V, {}, {}, {}, {}>;
 
   nextTick(callback: () => void, context?: any[]): void;
@@ -104,10 +104,10 @@ export interface VueConstructor<V extends Vue = Vue> {
   component(id: string): VueConstructor;
   component<VC extends VueConstructor>(id: string, constructor: VC): VC;
   component<Data, Methods, Computed, Props>(id: string, definition: AsyncComponent<Data, Methods, Computed, Props>): ExtendedVue<V, Data, Methods, Computed, Props>;
-  component<PropNames extends string>(id: string, definition: FunctionalComponentOptions<Record<PropNames, any>, PropNames[]>): ExtendedVue<V, {}, {}, {}, Record<PropNames, any>>;
-  component<Props>(id: string, definition: FunctionalComponentOptions<Props, RecordPropsDefinition<Props>>): ExtendedVue<V, {}, {}, {}, Props>;
   component<Data, Methods, Computed, PropNames extends string = never>(id: string, definition?: ThisTypedComponentOptionsWithArrayProps<V, Data, Methods, Computed, PropNames>): ExtendedVue<V, Data, Methods, Computed, Record<PropNames, any>>;
   component<Data, Methods, Computed, Props>(id: string, definition?: ThisTypedComponentOptionsWithRecordProps<V, Data, Methods, Computed, Props>): ExtendedVue<V, Data, Methods, Computed, Props>;
+  component<PropNames extends string>(id: string, definition: FunctionalComponentOptions<Record<PropNames, any>, PropNames[]>): ExtendedVue<V, {}, {}, {}, Record<PropNames, any>>;
+  component<Props>(id: string, definition: FunctionalComponentOptions<Props, RecordPropsDefinition<Props>>): ExtendedVue<V, {}, {}, {}, Props>;
   component(id: string, definition?: ComponentOptions<V>): ExtendedVue<V, {}, {}, {}, {}>;
 
   use<T>(plugin: PluginObject<T> | PluginFunction<T>, options?: T): void;