64 lines
2.1 KiB
JavaScript
64 lines
2.1 KiB
JavaScript
/**
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* Copyright 2014-2015, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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*/
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'use strict';
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/**
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* Forked from fbjs/warning:
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* https://github.com/facebook/fbjs/blob/e66ba20ad5be433eb54423f2b097d829324d9de6/packages/fbjs/src/__forks__/warning.js
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*
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* Only change is we use console.warn instead of console.error,
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* and do nothing when 'console' is not supported.
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* This really simplifies the code.
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* ---
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* Similar to invariant but only logs a warning if the condition is not met.
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* This can be used to log issues in development environments in critical
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* paths. Removing the logging code for production environments will keep the
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* same logic and follow the same code paths.
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*/
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var lowPriorityWarning = function () {};
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if (process.env.NODE_ENV !== 'production') {
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var printWarning = function (format) {
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for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
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args[_key - 1] = arguments[_key];
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}
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var argIndex = 0;
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var message = 'Warning: ' + format.replace(/%s/g, function () {
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return args[argIndex++];
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});
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if (typeof console !== 'undefined') {
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console.warn(message);
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}
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try {
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// --- Welcome to debugging React ---
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// This error was thrown as a convenience so that you can use this stack
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// to find the callsite that caused this warning to fire.
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throw new Error(message);
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} catch (x) {}
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};
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lowPriorityWarning = function (condition, format) {
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if (format === undefined) {
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throw new Error('`warning(condition, format, ...args)` requires a warning ' + 'message argument');
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}
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if (!condition) {
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for (var _len2 = arguments.length, args = Array(_len2 > 2 ? _len2 - 2 : 0), _key2 = 2; _key2 < _len2; _key2++) {
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args[_key2 - 2] = arguments[_key2];
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}
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printWarning.apply(undefined, [format].concat(args));
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}
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};
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}
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module.exports = lowPriorityWarning; |