"use strict";Object.defineProperty(exports,"__esModule",{value:!0});var _warning=require("warning"),_warning2=_interopRequireDefault(_warning);function _interopRequireDefault(e){return e&&e.__esModule?e:{default:e}}var warned={};exports.default=function(e,r){e||warned[r]||((0,_warning2.default)(!1,r),warned[r]=!0)},module.exports=exports.default;