refactor: remove experimental context

packages/runtime-core/src/index.ts

@@ -25,7 +25,6 @@ export { nextTick } from '@vue/scheduler'
 // Optional APIs
 // these are imported on-demand and can be tree-shaken
 export { applyDirectives } from './optional/directives'
-export { Provide, Inject } from './optional/context'
 export { createAsyncComponent } from './optional/asyncComponent'
 export { KeepAlive } from './optional/keepAlive'
 export { mixins } from './optional/mixins'

packages/runtime-core/src/optional/context.ts

@@ -1,94 +0,0 @@
-import { observable } from '@vue/observer'
-import { Component, FunctionalComponent, ComponentInstance } from '../component'
-import { warn } from '../warning'
-import { Slots, VNode } from '../vdom'
-import { VNodeFlags } from '../flags'
-
-interface ProviderProps {
-  id: string | symbol
-  value: any
-}
-
-export class Provide extends Component<ProviderProps> {
-  context: Record<string | symbol, any> = observable()
-
-  static props = {
-    id: {
-      type: [String, Symbol],
-      required: true
-    },
-    value: {
-      required: true
-    }
-  }
-
-  created() {
-    const { $props, context } = this
-    this.$watch(
-      () => $props.value,
-      value => {
-        // TS doesn't allow symbol as index :/
-        // https://github.com/Microsoft/TypeScript/issues/24587
-        context[$props.id as string] = value
-      },
-      {
-        sync: true,
-        immediate: true
-      }
-    )
-    if (__DEV__) {
-      this.$watch(
-        () => $props.id,
-        (id, oldId) => {
-          warn(
-            `Context provider id change detected (from "${oldId}" to "${id}"). ` +
-              `This is not supported and should be avoided as it leads to ` +
-              `indeterministic context resolution.`
-          )
-        },
-        {
-          sync: true
-        }
-      )
-    }
-  }
-
-  render(props: any, slots: any) {
-    return slots.default && slots.default()
-  }
-}
-
-interface InjectProps {
-  id: string | symbol
-}
-
-export const Inject: FunctionalComponent<InjectProps> = (
-  props: InjectProps,
-  slots: Slots,
-  attrs: any,
-  vnode: VNode
-) => {
-  let resolvedValue
-  let resolved = false
-  const { id } = props
-  // walk the parent chain to locate context with key
-  while (vnode !== null && vnode.contextVNode !== null) {
-    if (
-      vnode.flags & VNodeFlags.COMPONENT_STATEFUL &&
-      (vnode.children as ComponentInstance).constructor === Provide &&
-      (vnode.children as any).context.hasOwnProperty(id)
-    ) {
-      resolved = true
-      resolvedValue = (vnode.children as any).context[id]
-      break
-    }
-    vnode = vnode.contextVNode
-  }
-  if (__DEV__ && !resolved) {
-    warn(
-      `Inject with id "${id.toString()}" did not match any Provider with ` +
-        `corresponding property in the parent chain.`
-    )
-  }
-  return slots.default && slots.default(resolvedValue)
-}