react-native-gesture-handler/lib/module/getShadowNodeFromRef.js

Declarative API exposing native platform touch and gesture system to React Native

"use strict";

import { isHostInstance } from './hostInstance';

// Used by GestureDetector (unsupported on web at the moment) to check whether the
// attached view may get flattened on Fabric. This implementation causes errors
// on web due to the static resolution of `require` statements by webpack breaking
// the conditional importing. Solved by making .web file.
let findHostInstance_DEPRECATED;
let getInternalInstanceHandleFromPublicInstance;
export function getShadowNodeFromRef(ref) {
  const isAlreadyHostInstance = isHostInstance(ref);

  // Load findHostInstance_DEPRECATED lazily because it may not be available before render
  if (!isAlreadyHostInstance && findHostInstance_DEPRECATED === undefined) {
    try {
      // eslint-disable-next-line @typescript-eslint/no-var-requires
      const ReactFabric = require('react-native/Libraries/Renderer/shims/ReactFabric');
      // Since RN 0.77 ReactFabric exports findHostInstance_DEPRECATED in default object so we're trying to
      // access it first, then fallback on named export
      // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
      findHostInstance_DEPRECATED =
      // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
      ReactFabric?.default?.findHostInstance_DEPRECATED ||
      // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
      ReactFabric?.findHostInstance_DEPRECATED;
    } catch (e) {
      findHostInstance_DEPRECATED = _ref => null;
    }
  }

  // Load findHostInstance_DEPRECATED lazily because it may not be available before render
  if (getInternalInstanceHandleFromPublicInstance === undefined) {
    try {
      // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
      getInternalInstanceHandleFromPublicInstance =
      // eslint-disable-next-line @typescript-eslint/no-var-requires
      require('react-native/Libraries/ReactNative/ReactFabricPublicInstance/ReactFabricPublicInstance').getInternalInstanceHandleFromPublicInstance ?? (
      // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access, @typescript-eslint/no-unsafe-return
      ref => ref._internalInstanceHandle);
    } catch (e) {
      getInternalInstanceHandleFromPublicInstance = ref =>
      // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access, @typescript-eslint/no-unsafe-return
      ref._internalInstanceHandle;
    }
  }
  const hostInstance = isAlreadyHostInstance ? ref : findHostInstance_DEPRECATED(ref);

  // @ts-ignore Fabric
  return getInternalInstanceHandleFromPublicInstance(hostInstance).stateNode.node;
}
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