function hasAbsoluteFileName(hook) {

  const fileName = hook.hookSource ? hook.hookSource.fileName : null;

  if (fileName == null) {

    return false;

  } else {

    return fileName.indexOf('/react-devtools-shared/') > 0;

  }

}

function serializeHook(hook) {

  if (!hook.hookSource) return hook;

  // Remove user-specific portions of this file path.

  let fileName = hook.hookSource.fileName;

  const index = fileName.lastIndexOf('/react-devtools-shared/');

  fileName = fileName.slice(index + 1);

  let subHooks = hook.subHooks;

  if (subHooks) {

    subHooks = subHooks.map(serializeHook);

  }

  return {

    ...hook,

    hookSource: {

      ...hook.hookSource,

      fileName,

      // Otherwise changes in any test case or formatting might invalidate other tests.

      columnNumber: 'removed by Jest serializer',

      lineNumber: 'removed by Jest serializer',

    },

    subHooks,

  };

}

// test() is part of Jest's serializer API

export function test(maybeHook) {

  if (maybeHook === null || typeof maybeHook !== 'object') {

    return false;

  }

  const hasOwnProperty = Object.prototype.hasOwnProperty.bind(maybeHook);

  return (

    hasOwnProperty('id') &&

    hasOwnProperty('isStateEditable') &&

    hasOwnProperty('name') &&

    hasOwnProperty('subHooks') &&

    hasOwnProperty('value') &&

    // Don't re-process an already printed hook.

    hasAbsoluteFileName(maybeHook)

  );

}

// print() is part of Jest's serializer API

export function print(hook, serialize, indent) {

  // Don't stringify this object; that would break nested serializers.

  return serialize(serializeHook(hook));

}