Async Functions for ES6

src/compiler/diagnosticInformationMap.generated.ts

@@ -34,8 +34,12 @@ namespace ts {
         Statements_are_not_allowed_in_ambient_contexts: { code: 1036, category: DiagnosticCategory.Error, key: "Statements are not allowed in ambient contexts." },
         A_declare_modifier_cannot_be_used_in_an_already_ambient_context: { code: 1038, category: DiagnosticCategory.Error, key: "A 'declare' modifier cannot be used in an already ambient context." },
         Initializers_are_not_allowed_in_ambient_contexts: { code: 1039, category: DiagnosticCategory.Error, key: "Initializers are not allowed in ambient contexts." },
+        _0_modifier_cannot_be_used_in_an_ambient_context: { code: 1040, category: DiagnosticCategory.Error, key: "'{0}' modifier cannot be used in an ambient context." },
+        _0_modifier_cannot_be_used_with_a_class_declaration: { code: 1041, category: DiagnosticCategory.Error, key: "'{0}' modifier cannot be used with a class declaration." },
+        _0_modifier_cannot_be_used_here: { code: 1042, category: DiagnosticCategory.Error, key: "'{0}' modifier cannot be used here." },
+        _0_modifier_cannot_appear_on_a_data_property: { code: 1043, category: DiagnosticCategory.Error, key: "'{0}' modifier cannot appear on a data property." },
         _0_modifier_cannot_appear_on_a_module_element: { code: 1044, category: DiagnosticCategory.Error, key: "'{0}' modifier cannot appear on a module element." },
-        A_declare_modifier_cannot_be_used_with_an_interface_declaration: { code: 1045, category: DiagnosticCategory.Error, key: "A 'declare' modifier cannot be used with an interface declaration." },
+        A_0_modifier_cannot_be_used_with_an_interface_declaration: { code: 1045, category: DiagnosticCategory.Error, key: "A '{0}' modifier cannot be used with an interface declaration." },
         A_declare_modifier_is_required_for_a_top_level_declaration_in_a_d_ts_file: { code: 1046, category: DiagnosticCategory.Error, key: "A 'declare' modifier is required for a top level declaration in a .d.ts file." },
         A_rest_parameter_cannot_be_optional: { code: 1047, category: DiagnosticCategory.Error, key: "A rest parameter cannot be optional." },
         A_rest_parameter_cannot_have_an_initializer: { code: 1048, category: DiagnosticCategory.Error, key: "A rest parameter cannot have an initializer." },
@@ -45,11 +49,15 @@ namespace ts {
         A_set_accessor_cannot_have_rest_parameter: { code: 1053, category: DiagnosticCategory.Error, key: "A 'set' accessor cannot have rest parameter." },
         A_get_accessor_cannot_have_parameters: { code: 1054, category: DiagnosticCategory.Error, key: "A 'get' accessor cannot have parameters." },
         Accessors_are_only_available_when_targeting_ECMAScript_5_and_higher: { code: 1056, category: DiagnosticCategory.Error, key: "Accessors are only available when targeting ECMAScript 5 and higher." },
+        An_async_function_or_method_must_have_a_valid_awaitable_return_type: { code: 1057, category: DiagnosticCategory.Error, key: "An async function or method must have a valid awaitable return type." },
+        Operand_for_await_does_not_have_a_valid_callable_then_member: { code: 1058, category: DiagnosticCategory.Error, key: "Operand for 'await' does not have a valid callable 'then' member." },
+        Return_expression_in_async_function_does_not_have_a_valid_callable_then_member: { code: 1059, category: DiagnosticCategory.Error, key: "Return expression in async function does not have a valid callable 'then' member." },
+        Expression_body_for_async_arrow_function_does_not_have_a_valid_callable_then_member: { code: 1060, category: DiagnosticCategory.Error, key: "Expression body for async arrow function does not have a valid callable 'then' member." },
         Enum_member_must_have_initializer: { code: 1061, category: DiagnosticCategory.Error, key: "Enum member must have initializer." },
         An_export_assignment_cannot_be_used_in_a_namespace: { code: 1063, category: DiagnosticCategory.Error, key: "An export assignment cannot be used in a namespace." },
         Ambient_enum_elements_can_only_have_integer_literal_initializers: { code: 1066, category: DiagnosticCategory.Error, key: "Ambient enum elements can only have integer literal initializers." },
         Unexpected_token_A_constructor_method_accessor_or_property_was_expected: { code: 1068, category: DiagnosticCategory.Error, key: "Unexpected token. A constructor, method, accessor, or property was expected." },
-        A_declare_modifier_cannot_be_used_with_an_import_declaration: { code: 1079, category: DiagnosticCategory.Error, key: "A 'declare' modifier cannot be used with an import declaration." },
+        A_0_modifier_cannot_be_used_with_an_import_declaration: { code: 1079, category: DiagnosticCategory.Error, key: "A '{0}' modifier cannot be used with an import declaration." },
         Invalid_reference_directive_syntax: { code: 1084, category: DiagnosticCategory.Error, key: "Invalid 'reference' directive syntax." },
         Octal_literals_are_not_available_when_targeting_ECMAScript_5_and_higher: { code: 1085, category: DiagnosticCategory.Error, key: "Octal literals are not available when targeting ECMAScript 5 and higher." },
         An_accessor_cannot_be_declared_in_an_ambient_context: { code: 1086, category: DiagnosticCategory.Error, key: "An accessor cannot be declared in an ambient context." },
@@ -191,6 +199,9 @@ namespace ts {
         An_export_declaration_can_only_be_used_in_a_module: { code: 1233, category: DiagnosticCategory.Error, key: "An export declaration can only be used in a module." },
         An_ambient_module_declaration_is_only_allowed_at_the_top_level_in_a_file: { code: 1234, category: DiagnosticCategory.Error, key: "An ambient module declaration is only allowed at the top level in a file." },
         A_namespace_declaration_is_only_allowed_in_a_namespace_or_module: { code: 1235, category: DiagnosticCategory.Error, key: "A namespace declaration is only allowed in a namespace or module." },
+        with_statements_are_not_allowed_in_an_async_function_block: { code: 1300, category: DiagnosticCategory.Error, key: "'with' statements are not allowed in an async function block." },
+        await_expression_is_only_allowed_within_an_async_function: { code: 1308, category: DiagnosticCategory.Error, key: "'await' expression is only allowed within an async function." },
+        Async_functions_are_only_available_when_targeting_ECMAScript_6_and_higher: { code: 1311, category: DiagnosticCategory.Error, key: "Async functions are only available when targeting ECMAScript 6 and higher." },
         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." },
@@ -384,6 +395,11 @@ namespace ts {
         Cannot_find_namespace_0: { code: 2503, category: DiagnosticCategory.Error, key: "Cannot find namespace '{0}'." },
         No_best_common_type_exists_among_yield_expressions: { code: 2504, category: DiagnosticCategory.Error, key: "No best common type exists among yield expressions." },
         A_generator_cannot_have_a_void_type_annotation: { code: 2505, category: DiagnosticCategory.Error, key: "A generator cannot have a 'void' type annotation." },
+        Duplicate_identifier_0_Compiler_uses_declaration_1_to_support_async_functions: { code: 2520, category: DiagnosticCategory.Error, key: "Duplicate identifier '{0}'. Compiler uses declaration '{1}' to support async functions." },
+        Expression_resolves_to_variable_declaration_0_that_compiler_uses_to_support_async_functions: { code: 2521, category: DiagnosticCategory.Error, key: "Expression resolves to variable declaration '{0}' that compiler uses to support async functions." },
+        The_arguments_object_cannot_be_referenced_in_an_async_arrow_function_Consider_using_a_standard_async_function_expression: { code: 2522, category: DiagnosticCategory.Error, key: "The 'arguments' object cannot be referenced in an async arrow function. Consider using a standard async function expression." },
+        yield_expressions_cannot_be_used_in_a_parameter_initializer: { code: 2523, category: DiagnosticCategory.Error, key: "'yield' expressions cannot be used in a parameter initializer." },
+        await_expressions_cannot_be_used_in_a_parameter_initializer: { code: 2524, category: DiagnosticCategory.Error, key: "'await' expressions cannot be used in a parameter initializer." },
         Import_declaration_0_is_using_private_name_1: { code: 4000, category: DiagnosticCategory.Error, key: "Import declaration '{0}' is using private name '{1}'." },
         Type_parameter_0_of_exported_class_has_or_is_using_private_name_1: { code: 4002, category: DiagnosticCategory.Error, key: "Type parameter '{0}' of exported class has or is using private name '{1}'." },
         Type_parameter_0_of_exported_interface_has_or_is_using_private_name_1: { code: 4004, category: DiagnosticCategory.Error, key: "Type parameter '{0}' of exported interface has or is using private name '{1}'." },

src/compiler/diagnosticMessages.json

@@ -123,11 +123,27 @@
         "category": "Error",
         "code": 1039
     },
+    "'{0}' modifier cannot be used in an ambient context.": {
+        "category": "Error",
+        "code": 1040
+    },
+    "'{0}' modifier cannot be used with a class declaration.": {
+        "category": "Error",
+        "code": 1041
+    },
+    "'{0}' modifier cannot be used here.": {
+        "category": "Error",
+        "code": 1042
+    },
+    "'{0}' modifier cannot appear on a data property.": {
+        "category": "Error",
+        "code": 1043
+    },
     "'{0}' modifier cannot appear on a module element.": {
         "category": "Error",
         "code": 1044
     },
-    "A 'declare' modifier cannot be used with an interface declaration.": {
+    "A '{0}' modifier cannot be used with an interface declaration.": {
         "category": "Error",
         "code": 1045
     },
@@ -167,6 +183,22 @@
         "category": "Error",
         "code": 1056
     },
+    "An async function or method must have a valid awaitable return type.": {
+        "category": "Error",
+        "code": 1057
+    },
+    "Operand for 'await' does not have a valid callable 'then' member.": {
+        "category": "Error",
+        "code": 1058
+    },
+    "Return expression in async function does not have a valid callable 'then' member.": {
+        "category": "Error",
+        "code": 1059
+    },
+    "Expression body for async arrow function does not have a valid callable 'then' member.": {
+        "category": "Error",
+        "code": 1060
+    },
     "Enum member must have initializer.": {
         "category": "Error",
         "code": 1061
@@ -183,7 +215,7 @@
         "category": "Error",
         "code": 1068
     },
-    "A 'declare' modifier cannot be used with an import declaration.": {
+    "A '{0}' modifier cannot be used with an import declaration.": {
         "category": "Error",
         "code": 1079
     },
@@ -753,6 +785,19 @@
     },
 
 
+    "'with' statements are not allowed in an async function block.": {
+        "category": "Error",
+        "code": 1300
+    },
+    "'await' expression is only allowed within an async function.": {
+        "category": "Error",
+        "code": 1308
+    },
+    "Async functions are only available when targeting ECMAScript 6 and higher.": {
+        "category": "Error",
+        "code": 1311
+    },
+
     "Duplicate identifier '{0}'.": {
         "category": "Error",
         "code": 2300
@@ -1525,6 +1570,26 @@
         "category": "Error",
         "code": 2505
     },
+    "Duplicate identifier '{0}'. Compiler uses declaration '{1}' to support async functions.": {
+        "category": "Error",
+        "code": 2520
+    },
+    "Expression resolves to variable declaration '{0}' that compiler uses to support async functions.": {
+        "category": "Error",
+        "code": 2521
+    },
+    "The 'arguments' object cannot be referenced in an async arrow function. Consider using a standard async function expression.": {
+        "category": "Error",
+        "code": 2522
+    },
+    "'yield' expressions cannot be used in a parameter initializer.": {
+        "category": "Error",
+        "code": 2523
+    },
+    "'await' expressions cannot be used in a parameter initializer.": {
+        "category": "Error",
+        "code": 2524
+    },
 
     "Import declaration '{0}' is using private name '{1}'.": {
         "category": "Error",