/** * Copyright (c) 2014-present, Facebook, Inc. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. * */ 'use strict'; var emptyFunction = require("./emptyFunction"); /** * Similar to invariant but only logs a warning if the condition is not met. * This can be used to log issues in development environments in critical * paths. Removing the logging code for production environments will keep the * same logic and follow the same code paths. */ function printWarning(format) { for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) { args[_key - 1] = arguments[_key]; } var argIndex = 0; var message = 'Warning: ' + format.replace(/%s/g, function () { return args[argIndex++]; }); if (typeof console !== 'undefined') { console.error(message); } try { // --- Welcome to debugging React --- // This error was thrown as a convenience so that you can use this stack // to find the callsite that caused this warning to fire. throw new Error(message); } catch (x) {} } var warning = process.env.NODE_ENV !== "production" ? function (condition, format) { if (format === undefined) { throw new Error('`warning(condition, format, ...args)` requires a warning ' + 'message argument'); } if (!condition) { for (var _len2 = arguments.length, args = new Array(_len2 > 2 ? _len2 - 2 : 0), _key2 = 2; _key2 < _len2; _key2++) { args[_key2 - 2] = arguments[_key2]; } printWarning.apply(void 0, [format].concat(args)); } } : emptyFunction; module.exports = warning;