You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
1.7 KiB
63 lines
1.7 KiB
/**
|
|
* 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';
|
|
|
|
/**
|
|
* 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 __DEV__ = process.env.NODE_ENV !== 'production';
|
|
|
|
var warning = function() {};
|
|
|
|
if (__DEV__) {
|
|
var printWarning = function printWarning(format, args) {
|
|
var len = arguments.length;
|
|
args = new Array(len > 1 ? len - 1 : 0);
|
|
for (var 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) {}
|
|
}
|
|
|
|
warning = function(condition, format, args) {
|
|
var len = arguments.length;
|
|
args = new Array(len > 2 ? len - 2 : 0);
|
|
for (var key = 2; key < len; key++) {
|
|
args[key - 2] = arguments[key];
|
|
}
|
|
if (format === undefined) {
|
|
throw new Error(
|
|
'`warning(condition, format, ...args)` requires a warning ' +
|
|
'message argument'
|
|
);
|
|
}
|
|
if (!condition) {
|
|
printWarning.apply(null, [format].concat(args));
|
|
}
|
|
};
|
|
}
|
|
|
|
module.exports = warning;
|