Function warnIfNotHydrating

packages/react-reconciler/src/ReactFiberTreeContext.js:280–289

()

}

function warnIfNotHydrating() {
  if (__DEV__) {
    if (!getIsHydrating()) {
      console.error(
        'Expected to be hydrating. This is a bug in React. Please file ' +
          'an issue.',
      );
    }
  }
}