fix($injector): refactor module loading code and use minErr

Author: IgorMinar

src/auto/injector.js

@@ -494,37 +494,36 @@ function createInjector(modulesToLoad) {
     forEach(modulesToLoad, function(module) {
       if (loadedModules.get(module)) return;
       loadedModules.put(module, true);
-      if (isString(module)) {
-        var moduleFn = angularModule(module);
-        runBlocks = runBlocks.concat(loadModules(moduleFn.requires)).concat(moduleFn._runBlocks);
 
-        try {
+      try {
+        if (isString(module)) {
+          var moduleFn = angularModule(module);
+          runBlocks = runBlocks.concat(loadModules(moduleFn.requires)).concat(moduleFn._runBlocks);
+
           for(var invokeQueue = moduleFn._invokeQueue, i = 0, ii = invokeQueue.length; i < ii; i++) {
             var invokeArgs = invokeQueue[i],
                 provider = providerInjector.get(invokeArgs[0]);
 
             provider[invokeArgs[1]].apply(provider, invokeArgs[2]);
           }
-        } catch (e) {
-          if (e.message) e.message += ' from ' + module;
-          throw e;
+        } else if (isFunction(module)) {
+            runBlocks.push(providerInjector.invoke(module));
+        } else if (isArray(module)) {
+            runBlocks.push(providerInjector.invoke(module));
+        } else {
+          assertArgFn(module, 'module');
         }
-      } else if (isFunction(module)) {
-        try {
-          runBlocks.push(providerInjector.invoke(module));
-        } catch (e) {
-          if (e.message) e.message += ' from ' + module;
-          throw e;
+      } catch (e) {
+        if (isArray(module)) {
+          module = module[module.length - 1];
         }
-      } else if (isArray(module)) {
-        try {
-          runBlocks.push(providerInjector.invoke(module));
-        } catch (e) {
-          if (e.message) e.message += ' from ' + String(module[module.length - 1]);
-          throw e;
+        if (e.message && e.stack && e.stack.indexOf(e.message) == -1) {
+          // Safari & FF's stack traces don't contain error.message content unlike those of Chrome and IE
+          // So if stack doesn't contain message, we create a new string that contains both.
+          // Since error.stack is read-only in Safari, I'm overriding e and not e.stack here.
+          e = e.message + '\n' + e.stack;
         }
-      } else {
-        assertArgFn(module, 'module');
+        throw $injectorMinErr('modulerr', "Failed to instantiate module {0} due to:\n{1}", module, e.stack || e.message || e);
       }
     });
     return runBlocks;

src/minErr.js

@@ -3,7 +3,7 @@
 /**
  * @description
  *
- * This object provides a utility for producing rich Error messages within 
+ * This object provides a utility for producing rich Error messages within
  * Angular. It can be called as follows:
  *
  * var exampleMinErr = minErr('example');
@@ -34,14 +34,14 @@ function minErr(module) {
       template = arguments[1],
       templateArgs = arguments,
       message;
-    
+
     message = prefix + template.replace(/\{\d+\}/g, function (match) {
       var index = +match.slice(1, -1), arg;
 
       if (index + 2 < templateArgs.length) {
         arg = templateArgs[index + 2];
         if (isFunction(arg)) {
-          return arg.toString().replace(/ \{[\s\S]*$/, '');
+          return arg.toString().replace(/ ?\{[\s\S]*$/, '');
         } else if (isUndefined(arg)) {
           return 'undefined';
         } else if (!isString(arg)) {

test/AngularSpec.js

@@ -605,7 +605,9 @@ describe('angular', function() {
 
       expect(function() {
         angularInit(appElement, bootstrap);
-      }).toThrow("[$injector:nomod] Module 'doesntexist' is not available! You either misspelled the module name or forgot to load it.");
+      }).toThrowMatching(
+        /\[\$injector:modulerr] Failed to instantiate module doesntexist due to:\n.*\[\$injector:nomod] Module 'doesntexist' is not available! You either misspelled the module name or forgot to load it\./
+      );
     });
   });
 
@@ -749,7 +751,8 @@ describe('angular', function() {
 
       expect(function() {
         angular.bootstrap(element, ['doesntexist']);
-      }).toThrow("[$injector:nomod] Module 'doesntexist' is not available! You either misspelled the module name or forgot to load it.");
+      }).toThrowMatching(
+          /\[\$injector:modulerr\] Failed to instantiate module doesntexist due to:\n.*\[\$injector:nomod\] Module 'doesntexist' is not available! You either misspelled the module name or forgot to load it\./);
 
       expect(element.html()).toBe('{{1+2}}');
       dealoc(element);

test/auto/injectorSpec.js

@@ -268,8 +268,9 @@ describe('injector', function() {
     it('should error on invalid module name', function() {
       expect(function() {
         createInjector(['IDontExist'], {});
-      }).toThrow("[$injector:nomod] Module 'IDontExist' is not available! You either misspelled the module name or forgot to load it.");
-
+      }).toThrowMatching(
+          /\[\$injector:modulerr\].+\n.*\[\$injector:nomod] Module 'IDontExist' is not available! You either misspelled the module name or forgot to load it/
+      );
     });
 
 
@@ -552,7 +553,7 @@ describe('injector', function() {
           createInjector([
             {}
           ], {});
-        }).toThrow("[ng:areq] Argument 'module' is not a function, got Object");
+        }).toThrowMatching(/\[\$injector:modulerr\] Failed to instantiate module {} due to:\n.*\[ng\:areq] Argument 'module' is not a function, got Object/);
       });
 
 
@@ -561,31 +562,37 @@ describe('injector', function() {
           createInjector([function() {
             throw 'MyError';
           }], {});
-        }).toThrow('MyError');
+        }).toThrowMatching(/\[\$injector:modulerr\] Failed to instantiate module .+ due to:\n.*MyError/);
       });
 
 
       it('should decorate the missing service error with module name', function() {
         angular.module('TestModule', [], function(xyzzy) {});
         expect(function() {
-          createInjector(['TestModule']);
-        }).toThrow('[$injector:unpr] Unknown provider: xyzzy from TestModule');
+          createInjector(['TestModule' ]);
+        }).toThrowMatching(
+            /\[\$injector:modulerr\] Failed to instantiate module TestModule due to:\n.*\[\$injector:unpr] Unknown provider: xyzzy/
+        );
       });
 
 
       it('should decorate the missing service error with module function', function() {
         function myModule(xyzzy){}
         expect(function() {
           createInjector([myModule]);
-        }).toThrow('[$injector:unpr] Unknown provider: xyzzy from ' + myModule);
+        }).toThrowMatching(
+            /\[\$injector:modulerr\] Failed to instantiate module function myModule\(xyzzy\) due to:\n.*\[\$injector:unpr] Unknown provider: xyzzy/
+        );
       });
 
 
       it('should decorate the missing service error with module array function', function() {
         function myModule(xyzzy){}
         expect(function() {
           createInjector([['xyzzy', myModule]]);
-        }).toThrow('[$injector:unpr] Unknown provider: xyzzy from ' + myModule);
+        }).toThrowMatching(
+            /\[\$injector:modulerr\] Failed to instantiate module function myModule\(xyzzy\) due to:\n.*\[\$injector:unpr] Unknown provider: xyzzy/
+        );
       });
 
 
@@ -801,7 +808,7 @@ describe('injector', function() {
         createInjector([function($provide) {
           $provide.value('name', 'angular')
         }, instanceLookupInModule]);
-      }).toThrow('[$injector:unpr] Unknown provider: name from ' + String(instanceLookupInModule));
+      }).toThrowMatching(/\[\$injector:unpr] Unknown provider: name/);
     });
   });
 });