fix: Update warning to use the latest version from facebook/fbjs

BREAKING CHANGE: This changes the internal workings. A major release is
made to ensure minimal effect on downstream users.

browser.js

@@ -1,10 +1,10 @@
 /**
- * Copyright 2014-2015, Facebook, Inc.
- * All rights reserved.
+ * Copyright (c) 2014-present, Facebook, Inc.
  *
- * 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.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @providesModule warning
  */
 
 'use strict';
@@ -19,40 +19,42 @@
 var warning = function() {};
 
 if (process.env.NODE_ENV !== 'production') {
-  warning = function(condition, format, args) {
+  function printWarning(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'
-      );
+    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) {}
+  }
 
-    if (format.length < 10 || (/^[s\W]*$/).test(format)) {
+  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(
-        'The warning format should be able to uniquely identify this ' +
-        'warning. Please, use a more descriptive format than: ' + format
+          '`warning(condition, format, ...args)` requires a warning ' +
+          'message argument'
       );
     }
-
     if (!condition) {
-      var argIndex = 0;
-      var message = 'Warning: ' +
-        format.replace(/%s/g, function() {
-          return args[argIndex++];
-        });
-      if (typeof console !== 'undefined') {
-        console.error(message);
-      }
-      try {
-        // 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) {}
+      printWarning.apply(null, [format].concat(args));
     }
   };
 }

test/package/development.js

@@ -9,14 +9,6 @@ module.exports = function(t) {
     warning(false);
   }, /requires a warning/i);
 
-  t.throws(function() {
-    warning(true, 'short');
-  }, /use a more descriptive format/i);
-
-  t.throws(function() {
-    warning(false, 'short');
-  }, /use a more descriptive format/i);
-
   var error = console.error;
 
   console.error = function(msg) {

test/test.js

@@ -7,12 +7,12 @@ var vm = require('vm');
 var file = __dirname + '/package/' + process.env.NODE_ENV + '.js';
 
 test('node', function(t) {
-  t.plan(5);
+  t.plan(3);
   require(file)(t);
 });
 
 test('browserify', function(t) {
-  t.plan(8);
+  t.plan(6);
   var b = browserify({
     entries: file,
     standalone: 'package'

warning.js

@@ -1,10 +1,10 @@
 /**
- * Copyright 2014-2015, Facebook, Inc.
- * All rights reserved.
+ * Copyright (c) 2014-present, Facebook, Inc.
  *
- * 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.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @providesModule warning
  */
 
 'use strict';
@@ -21,40 +21,42 @@ var __DEV__ = process.env.NODE_ENV !== 'production';
 var warning = function() {};
 
 if (__DEV__) {
-  warning = function(condition, format, args) {
+  function printWarning(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'
-      );
+    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) {}
+  }
 
-    if (format.length < 10 || (/^[s\W]*$/).test(format)) {
+  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(
-        'The warning format should be able to uniquely identify this ' +
-        'warning. Please, use a more descriptive format than: ' + format
+          '`warning(condition, format, ...args)` requires a warning ' +
+          'message argument'
       );
     }
-
     if (!condition) {
-      var argIndex = 0;
-      var message = 'Warning: ' +
-        format.replace(/%s/g, function() {
-          return args[argIndex++];
-        });
-      if (typeof console !== 'undefined') {
-        console.error(message);
-      }
-      try {
-        // 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) {}
+      printWarning.apply(null, [format].concat(args));
     }
   };
 }