Merge branch 'master' into APISamples

Conflicts:
	tests/baselines/reference/APISample_compile.js
	tests/baselines/reference/APISample_compile.types
	tests/baselines/reference/APISample_linter.js
	tests/baselines/reference/APISample_linter.types
	tests/baselines/reference/APISample_transform.js
	tests/baselines/reference/APISample_transform.types
	tests/baselines/reference/APISample_watcher.js
	tests/baselines/reference/APISample_watcher.types

Author: mhegazy

src/compiler/checker.ts

@@ -156,6 +156,11 @@ module ts {
             shortName: "w",
             type: "boolean",
             description: Diagnostics.Watch_input_files,
+        },
+        {
+            name: "emitDecoratorMetadata",
+            type: "boolean",
+            experimental: true
         }
     ];
 

src/compiler/commandLineParser.ts

@@ -167,7 +167,8 @@ module ts {
         Decorators_cannot_be_applied_to_multiple_get_Slashset_accessors_of_the_same_name: { code: 1207, category: DiagnosticCategory.Error, key: "Decorators cannot be applied to multiple get/set accessors of the same name." },
         Cannot_compile_non_external_modules_when_the_separateCompilation_flag_is_provided: { code: 1208, category: DiagnosticCategory.Error, key: "Cannot compile non-external modules when the '--separateCompilation' flag is provided." },
         Ambient_const_enums_are_not_allowed_when_the_separateCompilation_flag_is_provided: { code: 1209, category: DiagnosticCategory.Error, key: "Ambient const enums are not allowed when the '--separateCompilation' flag is provided." },
-        A_class_declaration_without_the_default_modifier_must_have_a_name: { code: 1210, category: DiagnosticCategory.Error, key: "A class declaration without the 'default' modifier must have a name" },
+        Invalid_use_of_0_Class_definitions_are_automatically_in_strict_mode: { code: 1210, category: DiagnosticCategory.Error, key: "Invalid use of '{0}'. Class definitions are automatically in strict mode." },
+        A_class_declaration_without_the_default_modifier_must_have_a_name: { code: 1211, category: DiagnosticCategory.Error, key: "A class declaration without the 'default' modifier must have a name" },
         Duplicate_identifier_0: { code: 2300, category: DiagnosticCategory.Error, key: "Duplicate identifier '{0}'." },
         Initializer_of_instance_member_variable_0_cannot_reference_identifier_1_declared_in_the_constructor: { code: 2301, category: DiagnosticCategory.Error, key: "Initializer of instance member variable '{0}' cannot reference identifier '{1}' declared in the constructor." },
         Static_members_cannot_reference_class_type_parameters: { code: 2302, category: DiagnosticCategory.Error, key: "Static members cannot reference class type parameters." },

src/compiler/diagnosticInformationMap.generated.ts

@@ -659,9 +659,13 @@
         "category": "Error",
         "code": 1209
     },
+    "Invalid use of '{0}'. Class definitions are automatically in strict mode.": {
+        "category": "Error",
+        "code":  1210
+    },
     "A class declaration without the 'default' modifier must have a name": {
         "category": "Error",
-        "code": 1210
+        "code": 1211
     },
     "Duplicate identifier '{0}'.": {
         "category": "Error",

src/compiler/diagnosticMessages.json

@@ -4756,9 +4756,7 @@ module ts {
         function parseClassDeclarationOrExpression(fullStart: number, decorators: NodeArray<Decorator>, modifiers: ModifiersArray, kind: SyntaxKind): ClassLikeDeclaration {
             // In ES6 specification, All parts of a ClassDeclaration or a ClassExpression are strict mode code
             let savedStrictModeContext = inStrictModeContext();
-            if (languageVersion >= ScriptTarget.ES6) {
-                setStrictModeContext(true);
-            }
+            setStrictModeContext(true);
 
             var node = <ClassLikeDeclaration>createNode(kind, fullStart);
             node.decorators = decorators;

src/compiler/emitter.ts

@@ -1255,6 +1255,9 @@ module ts {
         getConstantValue(node: EnumMember | PropertyAccessExpression | ElementAccessExpression): number;
         resolvesToSomeValue(location: Node, name: string): boolean;
         getBlockScopedVariableId(node: Identifier): number;
+        serializeTypeOfNode(node: Node, getGeneratedNameForNode: (Node: Node) => string): string | string[];
+        serializeParameterTypesOfNode(node: Node, getGeneratedNameForNode: (Node: Node) => string): (string | string[])[];
+        serializeReturnTypeOfNode(node: Node, getGeneratedNameForNode: (Node: Node) => string): string | string[];
     }
 
     export const enum SymbolFlags {
@@ -1380,6 +1383,7 @@ module ts {
         EnumValuesComputed          = 0x00000080,
         BlockScopedBindingInLoop    = 0x00000100,
         EmitDecorate                = 0x00000200,  // Emit __decorate
+        EmitParam                   = 0x00000400,  // Emit __param helper for decorators
     }
 
     export interface NodeLinks {
@@ -1605,6 +1609,7 @@ module ts {
         version?: boolean;
         watch?: boolean;
         separateCompilation?: boolean;
+        emitDecoratorMetadata?: boolean;
         /* @internal */ stripInternal?: boolean;
         [option: string]: string | number | boolean;
     }

src/compiler/parser.ts

@@ -449,6 +449,18 @@ module ts {
         return false;
     }
 
+    export function isAccessor(node: Node): boolean {
+        if (node) {
+            switch (node.kind) {
+                case SyntaxKind.GetAccessor:
+                case SyntaxKind.SetAccessor:
+                    return true;
+            }
+        }
+
+        return false;
+    }
+
     export function isFunctionLike(node: Node): boolean {
         if (node) {
             switch (node.kind) {

src/compiler/types.ts

@@ -1168,4 +1168,4 @@ interface TypedPropertyDescriptor<T> {
 declare type ClassDecorator = <TFunction extends Function>(target: TFunction) => TFunction | void;
 declare type PropertyDecorator = (target: Object, propertyKey: string | symbol) => void;
 declare type MethodDecorator = <T>(target: Object, propertyKey: string | symbol, descriptor: TypedPropertyDescriptor<T>) => TypedPropertyDescriptor<T> | void;
-declare type ParameterDecorator = (target: Function, propertyKey: string | symbol, parameterIndex: number) => void;
+declare type ParameterDecorator = (target: Object, propertyKey: string | symbol, parameterIndex: number) => void;

src/compiler/utilities.ts

@@ -3513,27 +3513,27 @@ interface ProxyHandler<T> {
 
 interface ProxyConstructor {
     revocable<T>(target: T, handler: ProxyHandler<T>): { proxy: T; revoke: () => void; };
-    new <T>(target: T, handeler: ProxyHandler<T>): T
+    new <T>(target: T, handler: ProxyHandler<T>): T
 }
 declare var Proxy: ProxyConstructor;
 
-declare var Reflect: {
-    apply(target: Function, thisArgument: any, argumentsList: ArrayLike<any>): any;
-    construct(target: Function, argumentsList: ArrayLike<any>): any;
-    defineProperty(target: any, propertyKey: PropertyKey, attributes: PropertyDescriptor): boolean;
-    deleteProperty(target: any, propertyKey: PropertyKey): boolean;
-    enumerate(target: any): IterableIterator<any>;
-    get(target: any, propertyKey: PropertyKey, receiver?: any): any;
-    getOwnPropertyDescriptor(target: any, propertyKey: PropertyKey): PropertyDescriptor;
-    getPrototypeOf(target: any): any;
-    has(target: any, propertyKey: string): boolean;
-    has(target: any, propertyKey: symbol): boolean;
-    isExtensible(target: any): boolean;
-    ownKeys(target: any): Array<PropertyKey>;
-    preventExtensions(target: any): boolean;
-    set(target: any, propertyKey: PropertyKey, value: any, receiver? :any): boolean;
-    setPrototypeOf(target: any, proto: any): boolean;
-};
+declare module Reflect {
+    function apply(target: Function, thisArgument: any, argumentsList: ArrayLike<any>): any;
+    function construct(target: Function, argumentsList: ArrayLike<any>): any;
+    function defineProperty(target: any, propertyKey: PropertyKey, attributes: PropertyDescriptor): boolean;
+    function deleteProperty(target: any, propertyKey: PropertyKey): boolean;
+    function enumerate(target: any): IterableIterator<any>;
+    function get(target: any, propertyKey: PropertyKey, receiver?: any): any;
+    function getOwnPropertyDescriptor(target: any, propertyKey: PropertyKey): PropertyDescriptor;
+    function getPrototypeOf(target: any): any;
+    function has(target: any, propertyKey: string): boolean;
+    function has(target: any, propertyKey: symbol): boolean;
+    function isExtensible(target: any): boolean;
+    function ownKeys(target: any): Array<PropertyKey>;
+    function preventExtensions(target: any): boolean;
+    function set(target: any, propertyKey: PropertyKey, value: any, receiver? :any): boolean;
+    function setPrototypeOf(target: any, proto: any): boolean;
+}
 
 /**
  * Represents the completion of an asynchronous operation