Renamed context type flag

Author: bvaughn

packages/react-reconciler/src/ReactDebugAsyncWarnings.js

@@ -11,7 +11,10 @@ import type {Fiber} from './ReactFiber';
 
 import getComponentName from 'shared/getComponentName';
 import {getStackAddendumByWorkInProgressFiber} from 'shared/ReactFiberComponentTreeHook';
-import {AsyncUpdates, PreAsyncUpdates} from './ReactTypeOfInternalContext';
+import {
+  AsyncUpdates,
+  FutureCompatibilityChecks,
+} from './ReactTypeOfInternalContext';
 import warning from 'fbjs/lib/warning';
 
 type LIFECYCLE =
@@ -97,7 +100,7 @@ if (__DEV__) {
     while (fiber !== null) {
       if (
         fiber.internalContextTag & AsyncUpdates ||
-        fiber.internalContextTag & PreAsyncUpdates
+        fiber.internalContextTag & FutureCompatibilityChecks
       ) {
         maybeAsyncRoot = fiber;
       }

packages/react-reconciler/src/ReactFiberClassComponent.js

@@ -26,7 +26,10 @@ import invariant from 'fbjs/lib/invariant';
 import warning from 'fbjs/lib/warning';
 
 import {startPhaseTimer, stopPhaseTimer} from './ReactDebugFiberPerf';
-import {AsyncUpdates, PreAsyncUpdates} from './ReactTypeOfInternalContext';
+import {
+  AsyncUpdates,
+  FutureCompatibilityChecks,
+} from './ReactTypeOfInternalContext';
 import {
   cacheContext,
   getMaskedContext,
@@ -644,7 +647,7 @@ export default function(
       if (prototype.unstable_isAsyncReactComponent === true) {
         workInProgress.internalContextTag |= AsyncUpdates;
       } else if (prototype.unstable_isPreAsyncReactComponent === true) {
-        workInProgress.internalContextTag |= PreAsyncUpdates;
+        workInProgress.internalContextTag |= FutureCompatibilityChecks;
       }
     }
 
@@ -653,7 +656,7 @@ export default function(
       // Warn about any unsafe lifecycles on this class component.
       if (
         workInProgress.internalContextTag & AsyncUpdates ||
-        workInProgress.internalContextTag & PreAsyncUpdates
+        workInProgress.internalContextTag & FutureCompatibilityChecks
       ) {
         ReactDebugAsyncWarnings.recordLifecycleWarnings(
           workInProgress,

packages/react-reconciler/src/ReactTypeOfInternalContext.js

@@ -11,4 +11,4 @@ export type TypeOfInternalContext = number;
 
 export const NoContext = 0b00000000;
 export const AsyncUpdates = 0b00000001;
-export const PreAsyncUpdates = 0b00000010;
+export const FutureCompatibilityChecks = 0b00000010;