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node_modules/react-native/Libraries/ReactNative/ReactFabricPublicInstance/ReactFabricPublicInstance.js

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+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+
+/**
+ * This module is meant to be used by the React renderers to create public
+ * instances and get some data from them (like their instance handle / fiber).
+ */
+
+import type {
+  InternalInstanceHandle,
+  Node,
+  ViewConfig,
+} from '../../Renderer/shims/ReactNativeTypes';
+import type {RootTag} from '../RootTag';
+
+import ReactNativeDocument, {
+  createReactNativeDocument,
+} from '../../../src/private/webapis/dom/nodes/ReactNativeDocument';
+import ReactNativeElement from '../../../src/private/webapis/dom/nodes/ReactNativeElement';
+import ReadOnlyText from '../../../src/private/webapis/dom/nodes/ReadOnlyText';
+import * as RendererProxy from '../../ReactNative/RendererProxy';
+
+export opaque type PublicRootInstance = mixed;
+
+export function createPublicRootInstance(rootTag: RootTag): PublicRootInstance {
+  // $FlowExpectedError[incompatible-return]
+  return createReactNativeDocument(rootTag);
+}
+
+export function createPublicInstance(
+  tag: number,
+  viewConfig: ViewConfig,
+  internalInstanceHandle: InternalInstanceHandle,
+  ownerDocument: ReactNativeDocument,
+): ReactNativeElement {
+  return new ReactNativeElement(
+    tag,
+    viewConfig,
+    internalInstanceHandle,
+    ownerDocument,
+  );
+}
+
+export function createPublicTextInstance(
+  internalInstanceHandle: InternalInstanceHandle,
+  ownerDocument: ReactNativeDocument,
+): ReadOnlyText {
+  return new ReadOnlyText(internalInstanceHandle, ownerDocument);
+}
+
+export function getNativeTagFromPublicInstance(
+  publicInstance: ReactNativeElement,
+): number {
+  return publicInstance.__nativeTag;
+}
+
+export function getNodeFromPublicInstance(
+  publicInstance: ReactNativeElement,
+): ?Node {
+  // Avoid loading ReactFabric if using an instance from the legacy renderer.
+  if (publicInstance.__internalInstanceHandle == null) {
+    return null;
+  }
+
+  return RendererProxy.getNodeFromInternalInstanceHandle(
+    // $FlowExpectedError[incompatible-type] __internalInstanceHandle is always an InternalInstanceHandle from React when we get here.
+    publicInstance.__internalInstanceHandle,
+  );
+}
+
+export function getInternalInstanceHandleFromPublicInstance(
+  publicInstance: ReactNativeElement,
+): InternalInstanceHandle {
+  // TODO(T174762768): Remove this once OSS versions of renderers will be synced.
+  // $FlowExpectedError[prop-missing] Keeping this for backwards-compatibility with the renderers versions in open source.
+  if (publicInstance._internalInstanceHandle != null) {
+    // $FlowExpectedError[incompatible-type] Keeping this for backwards-compatibility with the renderers versions in open source.
+    return publicInstance._internalInstanceHandle;
+  }
+
+  // $FlowExpectedError[incompatible-type] __internalInstanceHandle is always an InternalInstanceHandle from React when we get here.
+  return publicInstance.__internalInstanceHandle;
+}

node_modules/react-native/Libraries/ReactNative/ReactFabricPublicInstance/ReactFabricPublicInstanceUtils.js

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+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict
+ * @format
+ */
+
+/**
+ * IMPORTANT!!
+ *
+ * This module cannot import `ReactFabric` (directly or indirectly)
+ * because it can be used by apps only using the legacy renderer.
+ * In that case `nativeFabricUIManager` isn't defined and `ReactFabric` throws.
+ */
+
+export function isPublicInstance(maybeInstance: mixed): boolean {
+  return (
+    maybeInstance != null &&
+    // TODO: implement a better check when the instance is defined in the React Native repository.
+    (maybeInstance.__nativeTag != null ||
+      // TODO: remove this check when syncing the new version of the renderer from React to React Native.
+      isLegacyFabricInstance(maybeInstance))
+  );
+}
+
+function isLegacyFabricInstance(maybeInstance: mixed): boolean {
+  /* eslint-disable dot-notation */
+  return (
+    maybeInstance != null &&
+    // $FlowExpectedError[incompatible-use]
+    maybeInstance['_internalInstanceHandle'] != null &&
+    maybeInstance['_internalInstanceHandle'].stateNode != null &&
+    maybeInstance['_internalInstanceHandle'].stateNode.canonical != null
+  );
+}

node_modules/react-native/Libraries/ReactNative/ReactFabricPublicInstance/ReactNativeAttributePayload.js

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+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ * @format
+ */
+
+import type {AttributeConfiguration} from '../../Renderer/shims/ReactNativeTypes';
+
+import flattenStyle from '../../StyleSheet/flattenStyle';
+import deepDiffer from '../../Utilities/differ/deepDiffer';
+
+const emptyObject = {};
+
+/**
+ * Create a payload that contains all the updates between two sets of props.
+ *
+ * These helpers are all encapsulated into a single module, because they use
+ * mutation as a performance optimization which leads to subtle shared
+ * dependencies between the code paths. To avoid this mutable state leaking
+ * across modules, I've kept them isolated to this module.
+ */
+
+type NestedNode = Array<NestedNode> | Object;
+
+// Tracks removed keys
+let removedKeys: {[string]: boolean} | null = null;
+let removedKeyCount = 0;
+
+const deepDifferOptions = {
+  unsafelyIgnoreFunctions: true,
+};
+
+function defaultDiffer(prevProp: mixed, nextProp: mixed): boolean {
+  if (typeof nextProp !== 'object' || nextProp === null) {
+    // Scalars have already been checked for equality
+    return true;
+  } else {
+    // For objects and arrays, the default diffing algorithm is a deep compare
+    return deepDiffer(prevProp, nextProp, deepDifferOptions);
+  }
+}
+
+function restoreDeletedValuesInNestedArray(
+  updatePayload: Object,
+  node: NestedNode,
+  validAttributes: AttributeConfiguration,
+) {
+  if (Array.isArray(node)) {
+    let i = node.length;
+    while (i-- && removedKeyCount > 0) {
+      restoreDeletedValuesInNestedArray(
+        updatePayload,
+        node[i],
+        validAttributes,
+      );
+    }
+  } else if (node && removedKeyCount > 0) {
+    const obj = node;
+    for (const propKey in removedKeys) {
+      // $FlowFixMe[incompatible-use] removedKeys is always non-null
+      if (!removedKeys[propKey]) {
+        continue;
+      }
+      let nextProp = obj[propKey];
+      if (nextProp === undefined) {
+        continue;
+      }
+
+      const attributeConfig = validAttributes[propKey];
+      if (!attributeConfig) {
+        continue; // not a valid native prop
+      }
+
+      if (typeof nextProp === 'function') {
+        // $FlowFixMe[incompatible-type] found when upgrading Flow
+        nextProp = true;
+      }
+      if (typeof nextProp === 'undefined') {
+        // $FlowFixMe[incompatible-type] found when upgrading Flow
+        nextProp = null;
+      }
+
+      if (typeof attributeConfig !== 'object') {
+        // case: !Object is the default case
+        updatePayload[propKey] = nextProp;
+      } else if (
+        typeof attributeConfig.diff === 'function' ||
+        typeof attributeConfig.process === 'function'
+      ) {
+        // case: CustomAttributeConfiguration
+        const nextValue =
+          typeof attributeConfig.process === 'function'
+            ? attributeConfig.process(nextProp)
+            : nextProp;
+        updatePayload[propKey] = nextValue;
+      }
+      // $FlowFixMe[incompatible-use] found when upgrading Flow
+      removedKeys[propKey] = false;
+      removedKeyCount--;
+    }
+  }
+}
+
+function diffNestedArrayProperty(
+  updatePayload: null | Object,
+  prevArray: Array<NestedNode>,
+  nextArray: Array<NestedNode>,
+  validAttributes: AttributeConfiguration,
+): null | Object {
+  const minLength =
+    prevArray.length < nextArray.length ? prevArray.length : nextArray.length;
+  let i;
+  for (i = 0; i < minLength; i++) {
+    // Diff any items in the array in the forward direction. Repeated keys
+    // will be overwritten by later values.
+    updatePayload = diffNestedProperty(
+      updatePayload,
+      prevArray[i],
+      nextArray[i],
+      validAttributes,
+    );
+  }
+  for (; i < prevArray.length; i++) {
+    // Clear out all remaining properties.
+    updatePayload = clearNestedProperty(
+      updatePayload,
+      prevArray[i],
+      validAttributes,
+    );
+  }
+  for (; i < nextArray.length; i++) {
+    // Add all remaining properties
+    const nextProp = nextArray[i];
+    if (!nextProp) {
+      continue;
+    }
+    updatePayload = addNestedProperty(updatePayload, nextProp, validAttributes);
+  }
+  return updatePayload;
+}
+
+function diffNestedProperty(
+  updatePayload: null | Object,
+  prevProp: NestedNode,
+  nextProp: NestedNode,
+  validAttributes: AttributeConfiguration,
+): null | Object {
+  if (!updatePayload && prevProp === nextProp) {
+    // If no properties have been added, then we can bail out quickly on object
+    // equality.
+    return updatePayload;
+  }
+
+  if (!prevProp || !nextProp) {
+    if (nextProp) {
+      return addNestedProperty(updatePayload, nextProp, validAttributes);
+    }
+    if (prevProp) {
+      return clearNestedProperty(updatePayload, prevProp, validAttributes);
+    }
+    return updatePayload;
+  }
+
+  if (!Array.isArray(prevProp) && !Array.isArray(nextProp)) {
+    // Both are leaves, we can diff the leaves.
+    return diffProperties(updatePayload, prevProp, nextProp, validAttributes);
+  }
+
+  if (Array.isArray(prevProp) && Array.isArray(nextProp)) {
+    // Both are arrays, we can diff the arrays.
+    return diffNestedArrayProperty(
+      updatePayload,
+      prevProp,
+      nextProp,
+      validAttributes,
+    );
+  }
+
+  if (Array.isArray(prevProp)) {
+    return diffProperties(
+      updatePayload,
+      flattenStyle(prevProp),
+      nextProp,
+      validAttributes,
+    );
+  }
+
+  return diffProperties(
+    updatePayload,
+    prevProp,
+    flattenStyle(nextProp),
+    validAttributes,
+  );
+}
+
+/**
+ * clearNestedProperty takes a single set of props and valid attributes. It
+ * adds a null sentinel to the updatePayload, for each prop key.
+ */
+function clearNestedProperty(
+  updatePayload: null | Object,
+  prevProp: NestedNode,
+  validAttributes: AttributeConfiguration,
+): null | Object {
+  if (!prevProp) {
+    return updatePayload;
+  }
+
+  if (!Array.isArray(prevProp)) {
+    // Add each property of the leaf.
+    return clearProperties(updatePayload, prevProp, validAttributes);
+  }
+
+  for (let i = 0; i < prevProp.length; i++) {
+    // Add all the properties of the array.
+    updatePayload = clearNestedProperty(
+      updatePayload,
+      prevProp[i],
+      validAttributes,
+    );
+  }
+  return updatePayload;
+}
+
+/**
+ * diffProperties takes two sets of props and a set of valid attributes
+ * and write to updatePayload the values that changed or were deleted.
+ * If no updatePayload is provided, a new one is created and returned if
+ * anything changed.
+ */
+function diffProperties(
+  updatePayload: null | Object,
+  prevProps: Object,
+  nextProps: Object,
+  validAttributes: AttributeConfiguration,
+): null | Object {
+  let attributeConfig;
+  let nextProp;
+  let prevProp;
+
+  for (const propKey in nextProps) {
+    attributeConfig = validAttributes[propKey];
+    if (!attributeConfig) {
+      continue; // not a valid native prop
+    }
+
+    prevProp = prevProps[propKey];
+    nextProp = nextProps[propKey];
+
+    if (typeof nextProp === 'function') {
+      const attributeConfigHasProcess =
+        typeof attributeConfig === 'object' &&
+        typeof attributeConfig.process === 'function';
+      if (!attributeConfigHasProcess) {
+        // functions are converted to booleans as markers that the associated
+        // events should be sent from native.
+        nextProp = (true: any);
+        // If nextProp is not a function, then don't bother changing prevProp
+        // since nextProp will win and go into the updatePayload regardless.
+        if (typeof prevProp === 'function') {
+          prevProp = (true: any);
+        }
+      }
+    }
+
+    // An explicit value of undefined is treated as a null because it overrides
+    // any other preceding value.
+    if (typeof nextProp === 'undefined') {
+      nextProp = (null: any);
+      if (typeof prevProp === 'undefined') {
+        prevProp = (null: any);
+      }
+    }
+
+    if (removedKeys) {
+      removedKeys[propKey] = false;
+    }
+
+    if (updatePayload && updatePayload[propKey] !== undefined) {
+      // Something else already triggered an update to this key because another
+      // value diffed. Since we're now later in the nested arrays our value is
+      // more important so we need to calculate it and override the existing
+      // value. It doesn't matter if nothing changed, we'll set it anyway.
+
+      // Pattern match on: attributeConfig
+      if (typeof attributeConfig !== 'object') {
+        // case: !Object is the default case
+        updatePayload[propKey] = nextProp;
+      } else if (
+        typeof attributeConfig.diff === 'function' ||
+        typeof attributeConfig.process === 'function'
+      ) {
+        // case: CustomAttributeConfiguration
+        const nextValue =
+          typeof attributeConfig.process === 'function'
+            ? attributeConfig.process(nextProp)
+            : nextProp;
+        updatePayload[propKey] = nextValue;
+      }
+      continue;
+    }
+
+    if (prevProp === nextProp) {
+      continue; // nothing changed
+    }
+
+    // Pattern match on: attributeConfig
+    if (typeof attributeConfig !== 'object') {
+      // case: !Object is the default case
+      if (defaultDiffer(prevProp, nextProp)) {
+        // a normal leaf has changed
+        (updatePayload || (updatePayload = ({}: {[string]: $FlowFixMe})))[
+          propKey
+        ] = nextProp;
+      }
+    } else if (
+      typeof attributeConfig.diff === 'function' ||
+      typeof attributeConfig.process === 'function'
+    ) {
+      // case: CustomAttributeConfiguration
+      const shouldUpdate =
+        prevProp === undefined ||
+        (typeof attributeConfig.diff === 'function'
+          ? attributeConfig.diff(prevProp, nextProp)
+          : defaultDiffer(prevProp, nextProp));
+      if (shouldUpdate) {
+        const nextValue =
+          typeof attributeConfig.process === 'function'
+            ? // $FlowFixMe[incompatible-use] found when upgrading Flow
+              attributeConfig.process(nextProp)
+            : nextProp;
+        (updatePayload || (updatePayload = ({}: {[string]: $FlowFixMe})))[
+          propKey
+        ] = nextValue;
+      }
+    } else {
+      // default: fallthrough case when nested properties are defined
+      removedKeys = null;
+      removedKeyCount = 0;
+      // We think that attributeConfig is not CustomAttributeConfiguration at
+      // this point so we assume it must be AttributeConfiguration.
+      updatePayload = diffNestedProperty(
+        updatePayload,
+        prevProp,
+        nextProp,
+        ((attributeConfig: any): AttributeConfiguration),
+      );
+      if (removedKeyCount > 0 && updatePayload) {
+        restoreDeletedValuesInNestedArray(
+          updatePayload,
+          nextProp,
+          ((attributeConfig: any): AttributeConfiguration),
+        );
+        removedKeys = null;
+      }
+    }
+  }
+
+  // Also iterate through all the previous props to catch any that have been
+  // removed and make sure native gets the signal so it can reset them to the
+  // default.
+  for (const propKey in prevProps) {
+    if (nextProps[propKey] !== undefined) {
+      continue; // we've already covered this key in the previous pass
+    }
+    attributeConfig = validAttributes[propKey];
+    if (!attributeConfig) {
+      continue; // not a valid native prop
+    }
+
+    if (updatePayload && updatePayload[propKey] !== undefined) {
+      // This was already updated to a diff result earlier.
+      continue;
+    }
+
+    prevProp = prevProps[propKey];
+    if (prevProp === undefined) {
+      continue; // was already empty anyway
+    }
+    // Pattern match on: attributeConfig
+    if (
+      typeof attributeConfig !== 'object' ||
+      typeof attributeConfig.diff === 'function' ||
+      typeof attributeConfig.process === 'function'
+    ) {
+      // case: CustomAttributeConfiguration | !Object
+      // Flag the leaf property for removal by sending a sentinel.
+      (updatePayload || (updatePayload = ({}: {[string]: $FlowFixMe})))[
+        propKey
+      ] = null;
+      if (!removedKeys) {
+        removedKeys = ({}: {[string]: boolean});
+      }
+      if (!removedKeys[propKey]) {
+        removedKeys[propKey] = true;
+        removedKeyCount++;
+      }
+    } else {
+      // default:
+      // This is a nested attribute configuration where all the properties
+      // were removed so we need to go through and clear out all of them.
+      updatePayload = clearNestedProperty(
+        updatePayload,
+        prevProp,
+        ((attributeConfig: any): AttributeConfiguration),
+      );
+    }
+  }
+  return updatePayload;
+}
+
+function addNestedProperty(
+  payload: null | Object,
+  props: Object,
+  validAttributes: AttributeConfiguration,
+): null | Object {
+  // Flatten nested style props.
+  if (Array.isArray(props)) {
+    for (let i = 0; i < props.length; i++) {
+      payload = addNestedProperty(payload, props[i], validAttributes);
+    }
+    return payload;
+  }
+
+  for (const propKey in props) {
+    const prop = props[propKey];
+
+    const attributeConfig = ((validAttributes[
+      propKey
+    ]: any): AttributeConfiguration);
+
+    if (attributeConfig == null) {
+      continue;
+    }
+
+    let newValue;
+
+    if (prop === undefined) {
+      // Discard the prop if it was previously defined.
+      if (payload && payload[propKey] !== undefined) {
+        newValue = null;
+      } else {
+        continue;
+      }
+    } else if (typeof attributeConfig === 'object') {
+      if (typeof attributeConfig.process === 'function') {
+        // An atomic prop with custom processing.
+        newValue = attributeConfig.process(prop);
+      } else if (typeof attributeConfig.diff === 'function') {
+        // An atomic prop with custom diffing. We don't need to do diffing when adding props.
+        newValue = prop;
+      }
+    } else {
+      if (typeof prop === 'function') {
+        // A function prop. It represents an event handler. Pass it to native as 'true'.
+        newValue = true;
+      } else {
+        // An atomic prop. Doesn't need to be flattened.
+        newValue = prop;
+      }
+    }
+
+    if (newValue !== undefined) {
+      if (!payload) {
+        payload = ({}: {[string]: $FlowFixMe});
+      }
+      payload[propKey] = newValue;
+      continue;
+    }
+
+    payload = addNestedProperty(payload, prop, attributeConfig);
+  }
+
+  return payload;
+}
+
+/**
+ * clearProperties clears all the previous props by adding a null sentinel
+ * to the payload for each valid key.
+ */
+function clearProperties(
+  updatePayload: null | Object,
+  prevProps: Object,
+  validAttributes: AttributeConfiguration,
+): null | Object {
+  return diffProperties(updatePayload, prevProps, emptyObject, validAttributes);
+}
+
+export function create(
+  props: Object,
+  validAttributes: AttributeConfiguration,
+): null | Object {
+  return addNestedProperty(null, props, validAttributes);
+}
+
+export function diff(
+  prevProps: Object,
+  nextProps: Object,
+  validAttributes: AttributeConfiguration,
+): null | Object {
+  return diffProperties(
+    null, // updatePayload
+    prevProps,
+    nextProps,
+    validAttributes,
+  );
+}

node_modules/react-native/Libraries/ReactNative/ReactFabricPublicInstance/warnForStyleProps.js

@@ -0,0 +1,33 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+
+import type {AttributeConfiguration} from '../../Renderer/shims/ReactNativeTypes';
+
+export default function warnForStyleProps(
+  props: {...},
+  validAttributes: AttributeConfiguration,
+): void {
+  if (__DEV__) {
+    for (const key in validAttributes.style) {
+      // $FlowFixMe[invalid-computed-prop]
+      if (!(validAttributes[key] || props[key] === undefined)) {
+        console.error(
+          'You are setting the style `{ %s' +
+            ': ... }` as a prop. You ' +
+            'should nest it in a style object. ' +
+            'E.g. `{ style: { %s' +
+            ': ... } }`',
+          key,
+          key,
+        );
+      }
+    }
+  }
+}