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Diffstat (limited to 'node_modules/react-dom/lib/lowPriorityWarning.js')
-rw-r--r-- | node_modules/react-dom/lib/lowPriorityWarning.js | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/node_modules/react-dom/lib/lowPriorityWarning.js b/node_modules/react-dom/lib/lowPriorityWarning.js new file mode 100644 index 000000000..8c0f58bff --- /dev/null +++ b/node_modules/react-dom/lib/lowPriorityWarning.js @@ -0,0 +1,64 @@ +/** + * Copyright 2014-2015, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +'use strict'; + +/** + * Forked from fbjs/warning: + * https://github.com/facebook/fbjs/blob/e66ba20ad5be433eb54423f2b097d829324d9de6/packages/fbjs/src/__forks__/warning.js + * + * Only change is we use console.warn instead of console.error, + * and do nothing when 'console' is not supported. + * This really simplifies the code. + * --- + * 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. + */ + +var lowPriorityWarning = function () {}; + +if (process.env.NODE_ENV !== 'production') { + var printWarning = function (format) { + for (var _len = arguments.length, args = 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.warn(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) {} + }; + + lowPriorityWarning = 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 = Array(_len2 > 2 ? _len2 - 2 : 0), _key2 = 2; _key2 < _len2; _key2++) { + args[_key2 - 2] = arguments[_key2]; + } + + printWarning.apply(undefined, [format].concat(args)); + } + }; +} + +module.exports = lowPriorityWarning;
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