Remove non-JSX propTypes checks

Author: gaearon

packages/react-reconciler/src/ReactFiberBeginWork.js

@@ -40,7 +40,6 @@ import type {TracingMarkerInstance} from './ReactFiberTracingMarkerComponent';
 import type {TransitionStatus} from './ReactFiberConfig';
 import type {Hook} from './ReactFiberHooks';
 
-import checkPropTypes from 'shared/checkPropTypes';
 import {
   markComponentRenderStarted,
   markComponentRenderStopped,
@@ -401,23 +400,6 @@ function updateForwardRef(
   // TODO: current can be non-null here even if the component
   // hasn't yet mounted. This happens after the first render suspends.
   // We'll need to figure out if this is fine or can cause issues.
-
-  if (__DEV__) {
-    if (workInProgress.type !== workInProgress.elementType) {
-      // Lazy component props can't be validated in createElement
-      // because they're only guaranteed to be resolved here.
-      const innerPropTypes = Component.propTypes;
-      if (innerPropTypes) {
-        checkPropTypes(
-          innerPropTypes,
-          nextProps, // Resolved props
-          'prop',
-          getComponentNameFromType(Component),
-        );
-      }
-    }
-  }
-
   const render = Component.render;
   const ref = workInProgress.ref;
 
@@ -507,17 +489,6 @@ function updateMemoComponent(
       );
     }
     if (__DEV__) {
-      const innerPropTypes = type.propTypes;
-      if (innerPropTypes) {
-        // Inner memo component props aren't currently validated in createElement.
-        // We could move it there, but we'd still need this for lazy code path.
-        checkPropTypes(
-          innerPropTypes,
-          nextProps, // Resolved props
-          'prop',
-          getComponentNameFromType(type),
-        );
-      }
       if (Component.defaultProps !== undefined) {
         const componentName = getComponentNameFromType(type) || 'Unknown';
         if (!didWarnAboutDefaultPropsOnFunctionComponent[componentName]) {
@@ -543,20 +514,6 @@ function updateMemoComponent(
     workInProgress.child = child;
     return child;
   }
-  if (__DEV__) {
-    const type = Component.type;
-    const innerPropTypes = type.propTypes;
-    if (innerPropTypes) {
-      // Inner memo component props aren't currently validated in createElement.
-      // We could move it there, but we'd still need this for lazy code path.
-      checkPropTypes(
-        innerPropTypes,
-        nextProps, // Resolved props
-        'prop',
-        getComponentNameFromType(type),
-      );
-    }
-  }
   const currentChild = ((current.child: any): Fiber); // This is always exactly one child
   const hasScheduledUpdateOrContext = checkScheduledUpdateOrContext(
     current,
@@ -592,37 +549,6 @@ function updateSimpleMemoComponent(
   // TODO: current can be non-null here even if the component
   // hasn't yet mounted. This happens when the inner render suspends.
   // We'll need to figure out if this is fine or can cause issues.
-
-  if (__DEV__) {
-    if (workInProgress.type !== workInProgress.elementType) {
-      // Lazy component props can't be validated in createElement
-      // because they're only guaranteed to be resolved here.
-      let outerMemoType = workInProgress.elementType;
-      if (outerMemoType.$$typeof === REACT_LAZY_TYPE) {
-        // We warn when you define propTypes on lazy()
-        // so let's just skip over it to find memo() outer wrapper.
-        // Inner props for memo are validated later.
-        const lazyComponent: LazyComponentType<any, any> = outerMemoType;
-        const payload = lazyComponent._payload;
-        const init = lazyComponent._init;
-        try {
-          outerMemoType = init(payload);
-        } catch (x) {
-          outerMemoType = null;
-        }
-        // Inner propTypes will be validated in the function component path.
-        const outerPropTypes = outerMemoType && (outerMemoType: any).propTypes;
-        if (outerPropTypes) {
-          checkPropTypes(
-            outerPropTypes,
-            nextProps, // Resolved (SimpleMemoComponent has no defaultProps)
-            'prop',
-            getComponentNameFromType(outerMemoType),
-          );
-        }
-      }
-    }
-  }
   if (current !== null) {
     const prevProps = current.memoizedProps;
     if (
@@ -1099,22 +1025,6 @@ function updateFunctionComponent(
   nextProps: any,
   renderLanes: Lanes,
 ) {
-  if (__DEV__) {
-    if (workInProgress.type !== workInProgress.elementType) {
-      // Lazy component props can't be validated in createElement
-      // because they're only guaranteed to be resolved here.
-      const innerPropTypes = Component.propTypes;
-      if (innerPropTypes) {
-        checkPropTypes(
-          innerPropTypes,
-          nextProps, // Resolved props
-          'prop',
-          getComponentNameFromType(Component),
-        );
-      }
-    }
-  }
-
   let context;
   if (!disableLegacyContext) {
     const unmaskedContext = getUnmaskedContext(workInProgress, Component, true);
@@ -1253,20 +1163,6 @@ function updateClassComponent(
         break;
       }
     }
-
-    if (workInProgress.type !== workInProgress.elementType) {
-      // Lazy component props can't be validated in createElement
-      // because they're only guaranteed to be resolved here.
-      const innerPropTypes = Component.propTypes;
-      if (innerPropTypes) {
-        checkPropTypes(
-          innerPropTypes,
-          nextProps, // Resolved props
-          'prop',
-          getComponentNameFromType(Component),
-        );
-      }
-    }
   }
 
   // Push context providers early to prevent context stack mismatches.
@@ -1815,19 +1711,6 @@ function mountLazyComponent(
       return child;
     }
     case MemoComponent: {
-      if (__DEV__) {
-        if (workInProgress.type !== workInProgress.elementType) {
-          const outerPropTypes = Component.propTypes;
-          if (outerPropTypes) {
-            checkPropTypes(
-              outerPropTypes,
-              resolvedProps, // Resolved for outer only
-              'prop',
-              getComponentNameFromType(Component),
-            );
-          }
-        }
-      }
       child = updateMemoComponent(
         null,
         workInProgress,
@@ -3549,11 +3432,6 @@ function updateContextProvider(
         );
       }
     }
-    const providerPropTypes = workInProgress.type.propTypes;
-
-    if (providerPropTypes) {
-      checkPropTypes(providerPropTypes, newProps, 'prop', 'Context.Provider');
-    }
   }
 
   pushProvider(workInProgress, context, newValue);
@@ -4229,19 +4107,6 @@ function beginWork(
       const unresolvedProps = workInProgress.pendingProps;
       // Resolve outer props first, then resolve inner props.
       let resolvedProps = resolveDefaultProps(type, unresolvedProps);
-      if (__DEV__) {
-        if (workInProgress.type !== workInProgress.elementType) {
-          const outerPropTypes = type.propTypes;
-          if (outerPropTypes) {
-            checkPropTypes(
-              outerPropTypes,
-              resolvedProps, // Resolved for outer only
-              'prop',
-              getComponentNameFromType(type),
-            );
-          }
-        }
-      }
       resolvedProps = resolveDefaultProps(type.type, resolvedProps);
       return updateMemoComponent(
         current,