1 files changed, 55 insertions, 0 deletions
diff --git a/node_modules/fbjs/lib/warning.js.flow b/node_modules/fbjs/lib/warning.js.flow
new file mode 100644
index 000000000..a42d54bf6
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+++ b/node_modules/fbjs/lib/warning.js.flow
@@ -0,0 +1,55 @@
+/**
+ * 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.
+ *
+ * @providesModule warning
+ */
+
+'use strict';
+
+var emptyFunction = require('./emptyFunction');
+
+/**
+ * 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 warning = emptyFunction;
+
+if (__DEV__) {
+  function printWarning(format, ...args) {
+    var argIndex = 0;
+    var message = 'Warning: ' + format.replace(/%s/g, () => 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) {
+    if (format === undefined) {
+      throw new Error('`warning(condition, format, ...args)` requires a warning ' + 'message argument');
+    }
+
+    if (format.indexOf('Failed Composite propType: ') === 0) {
+      return; // Ignore CompositeComponent proptype check.
+    }
+
+    if (!condition) {
+      printWarning(format, ...args);
+    }
+  };
+}
+
+module.exports = warning;
+\ No newline at end of file