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60 lines
1.9 KiB
60 lines
1.9 KiB
10 years ago
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/**
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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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* @providesModule warning
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*/
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"use strict";
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var emptyFunction = require("./emptyFunction");
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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 warning = emptyFunction;
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if ("production" !== process.env.NODE_ENV) {
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warning = function(condition, format ) {for (var args=[],$__0=2,$__1=arguments.length;$__0<$__1;$__0++) args.push(arguments[$__0]);
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if (format === undefined) {
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throw new Error(
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'`warning(condition, format, ...args)` requires a warning ' +
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'message argument'
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);
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}
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if (format.length < 10 || /^[s\W]*$/.test(format)) {
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throw new Error(
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'The warning format should be able to uniquely identify this ' +
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'warning. Please, use a more descriptive format than: ' + format
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);
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}
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if (format.indexOf('Failed Composite propType: ') === 0) {
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return; // Ignore CompositeComponent proptype check.
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}
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if (!condition) {
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var argIndex = 0;
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var message = 'Warning: ' + format.replace(/%s/g, function() {return args[argIndex++];});
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console.warn(message);
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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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};
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}
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module.exports = warning;
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