feat(functional): add scopedSlots to context in functional components (#7941)

Author: posva

src/core/vdom/create-functional-component.js

@@ -48,6 +48,7 @@ export function FunctionalRenderContext (
   this.children = children
   this.parent = parent
   this.listeners = data.on || emptyObject
+  this.scopedSlots = data.scopedSlots || emptyObject
   this.injections = resolveInject(options.inject, parent)
   this.slots = () => resolveSlots(children, parent)
 

test/unit/features/options/functional.spec.js

@@ -79,6 +79,23 @@ describe('Options functional', () => {
     document.body.removeChild(vm.$el)
   })
 
+  it('should expose data.scopedSlots as scopedSlots', () => {
+    const vm = new Vue({
+      template: '<div><wrap><p slot-scope="a">{{ a }}</p></wrap></div>',
+      components: {
+        wrap: {
+          functional: true,
+          render (h, { scopedSlots, data }) {
+            expect(data.scopedSlots).toBe(scopedSlots)
+            return data.scopedSlots.default('a')
+          }
+        }
+      }
+    }).$mount()
+
+    expect(vm.$el.textContent).toBe('a')
+  })
+
   it('should support returning more than one root node', () => {
     const vm = new Vue({
       template: `<div><test></test></div>`,

types/options.d.ts

@@ -1,5 +1,5 @@
 import { Vue, CreateElement, CombinedVueInstance } from "./vue";
-import { VNode, VNodeData, VNodeDirective } from "./vnode";
+import { VNode, VNodeData, VNodeDirective, ScopedSlot } from "./vnode";
 
 type Constructor = {
   new (...args: any[]): any;
@@ -140,6 +140,7 @@ export interface RenderContext<Props=DefaultProps> {
   data: VNodeData;
   parent: Vue;
   listeners: { [key: string]: Function | Function[] };
+  scopedSlots: { [key: string]: ScopedSlot };
   injections: any
 }
 

types/test/options-test.ts

@@ -381,6 +381,7 @@ Vue.component('functional-component', {
     context.slots();
     context.data;
     context.parent;
+    context.scopedSlots;
     context.listeners.click;
     return createElement("div", {}, context.children);
   }