import {printStore} from 'react-devtools-shared/src/devtools/utils';

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

export function test(maybeState) {

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

    return false;

  }

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

  // Duck typing at its finest.

  return (

    hasOwnProperty('inspectedElementID') &&

    hasOwnProperty('ownerFlatTree') &&

    hasOwnProperty('ownerSubtreeLeafElementID')

  );

}

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

export function print(state, serialize, indent) {

  // This is a big of a hack but it works around having to pass in a meta object e.g. {store, state}.

  // DevTools tests depend on a global Store object anyway (initialized via setupTest).

  const store = global.store;

  return printStore(store, false, state);

}