| 56 | } |
| 57 | |
| 58 | function printWarning(level, format, args) { |
| 59 | // When changing this logic, you might want to also |
| 60 | // update consoleWithStackDev.www.js as well. |
| 61 | { |
| 62 | var hasExistingStack = args.length > 0 && typeof args[args.length - 1] === 'string' && args[args.length - 1].indexOf('\n in') === 0; |
| 63 | |
| 64 | if (!hasExistingStack) { |
| 65 | var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame; |
| 66 | var stack = ReactDebugCurrentFrame.getStackAddendum(); |
| 67 | |
| 68 | if (stack !== '') { |
| 69 | format += '%s'; |
| 70 | args = args.concat([stack]); |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | var argsWithFormat = args.map(function (item) { |
| 75 | return '' + item; |
| 76 | }); // Careful: RN currently depends on this prefix |
| 77 | |
| 78 | argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it |
| 79 | // breaks IE9: https://github.com/facebook/react/issues/13610 |
| 80 | // eslint-disable-next-line react-internal/no-production-logging |
| 81 | |
| 82 | Function.prototype.apply.call(console[level], console, argsWithFormat); |
| 83 | |
| 84 | try { |
| 85 | // --- Welcome to debugging React --- |
| 86 | // This error was thrown as a convenience so that you can use this stack |
| 87 | // to find the callsite that caused this warning to fire. |
| 88 | var argIndex = 0; |
| 89 | var message = 'Warning: ' + format.replace(/%s/g, function () { |
| 90 | return args[argIndex++]; |
| 91 | }); |
| 92 | throw new Error(message); |
| 93 | } catch (x) {} |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | if (!React) { |
| 98 | { |