Update an error

src/compiler/checker.ts

@@ -4852,11 +4852,11 @@ module ts {
             // As noted in ECMAScript 6 language spec, arrow functions never have an arguments objects.
             // Although in down-level emit of arrow function, we emit it using function expression which means that
             // arguments objects will be bound to the inner object; emitting arrow function natively in ES6, arguments objects
-            // will be bound to non-arrow function that contain this arrow function. This results in inconsistent behaviour.
+            // will be bound to non-arrow function that contain this arrow function. This results in inconsistent behavior.
             // To avoid that we will give an error to users if they use arguments objects in arrow function so that they
             // can explicitly bound arguments objects
             if (symbol === argumentsSymbol && getContainingFunction(node).kind === SyntaxKind.ArrowFunction) {
-              error(node, Diagnostics.The_argument_object_has_different_behaviour_across_Javascript_versions_Use_function_expression_or_rest_parameters_instead);
+              error(node, Diagnostics.The_arguments_object_cannot_be_referenced_in_an_arrow_function_Consider_using_a_standard_function_expression);
             }
 
             if (symbol.flags & SymbolFlags.Import) {

src/compiler/diagnosticInformationMap.generated.ts

@@ -452,6 +452,6 @@ module ts {
         You_cannot_rename_this_element: { code: 8000, category: DiagnosticCategory.Error, key: "You cannot rename this element." },
         yield_expressions_are_not_currently_supported: { code: 9000, category: DiagnosticCategory.Error, key: "'yield' expressions are not currently supported.", isEarly: true },
         Generators_are_not_currently_supported: { code: 9001, category: DiagnosticCategory.Error, key: "Generators are not currently supported.", isEarly: true },
-        The_argument_object_has_different_behaviour_across_Javascript_versions_Use_function_expression_or_rest_parameters_instead: { code: 9002, category: DiagnosticCategory.Error, key: "The 'argument' object has different behaviour across Javascript versions. Use function expression or rest parameters instead" },
+        The_arguments_object_cannot_be_referenced_in_an_arrow_function_Consider_using_a_standard_function_expression: { code: 9002, category: DiagnosticCategory.Error, key: "The 'arguments' object cannot be referenced in an arrow function. Consider using a standard function expression." },
     };
 }

src/compiler/diagnosticMessages.json

@@ -1909,7 +1909,7 @@
 		"code": 9001,
 		"isEarly": true
 	},
-	"The 'argument' object has different behaviour across Javascript versions. Use function expression or rest parameters instead": {
+	"The 'arguments' object cannot be referenced in an arrow function. Consider using a standard function expression.": {
 		"category": "Error",
 		"code": 9002
 	}

tests/baselines/reference/emitArrowFunctionWhenUsingArguments.errors.txt

@@ -1,21 +1,21 @@
-tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArguments.ts(2,15): error TS9002: The 'argument' object has different behaviour across Javascript versions. Use function expression or rest parameters instead
-tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArguments.ts(7,19): error TS9002: The 'argument' object has different behaviour across Javascript versions. Use function expression or rest parameters instead
-tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArguments.ts(13,13): error TS9002: The 'argument' object has different behaviour across Javascript versions. Use function expression or rest parameters instead
-tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArguments.ts(19,15): error TS9002: The 'argument' object has different behaviour across Javascript versions. Use function expression or rest parameters instead
+tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArguments.ts(2,15): error TS9002: The 'arguments' object cannot be referenced in an arrow function. Consider using a standard function expression.
+tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArguments.ts(7,19): error TS9002: The 'arguments' object cannot be referenced in an arrow function. Consider using a standard function expression.
+tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArguments.ts(13,13): error TS9002: The 'arguments' object cannot be referenced in an arrow function. Consider using a standard function expression.
+tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArguments.ts(19,15): error TS9002: The 'arguments' object cannot be referenced in an arrow function. Consider using a standard function expression.
 
 
 ==== tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArguments.ts (4 errors) ====
     var a = () => {
         var arg = arguments[0];  // error
                   ~~~~~~~~~
-!!! error TS9002: The 'argument' object has different behaviour across Javascript versions. Use function expression or rest parameters instead
+!!! error TS9002: The 'arguments' object cannot be referenced in an arrow function. Consider using a standard function expression.
     }
     
     var b = function () {
         var a = () => {
             var arg = arguments[0];  // error
                       ~~~~~~~~~
-!!! error TS9002: The 'argument' object has different behaviour across Javascript versions. Use function expression or rest parameters instead
+!!! error TS9002: The 'arguments' object cannot be referenced in an arrow function. Consider using a standard function expression.
         }
     }
     
@@ -23,7 +23,7 @@ tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArguments.ts
     	() => {
     		var arg = arguments[0];
     		          ~~~~~~~~~
-!!! error TS9002: The 'argument' object has different behaviour across Javascript versions. Use function expression or rest parameters instead
+!!! error TS9002: The 'arguments' object cannot be referenced in an arrow function. Consider using a standard function expression.
     	}
     }
     
@@ -31,7 +31,7 @@ tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArguments.ts
     foo(() => {
         var arg = arguments[0];  // error
                   ~~~~~~~~~
-!!! error TS9002: The 'argument' object has different behaviour across Javascript versions. Use function expression or rest parameters instead
+!!! error TS9002: The 'arguments' object cannot be referenced in an arrow function. Consider using a standard function expression.
     });
     
     function bar() {

tests/baselines/reference/emitArrowFunctionWhenUsingArgumentsES6.errors.txt

@@ -1,21 +1,21 @@
-tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArgumentsES6.ts(2,15): error TS9002: The 'argument' object has different behaviour across Javascript versions. Use function expression or rest parameters instead
-tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArgumentsES6.ts(7,19): error TS9002: The 'argument' object has different behaviour across Javascript versions. Use function expression or rest parameters instead
-tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArgumentsES6.ts(13,13): error TS9002: The 'argument' object has different behaviour across Javascript versions. Use function expression or rest parameters instead
-tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArgumentsES6.ts(19,15): error TS9002: The 'argument' object has different behaviour across Javascript versions. Use function expression or rest parameters instead
+tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArgumentsES6.ts(2,15): error TS9002: The 'arguments' object cannot be referenced in an arrow function. Consider using a standard function expression.
+tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArgumentsES6.ts(7,19): error TS9002: The 'arguments' object cannot be referenced in an arrow function. Consider using a standard function expression.
+tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArgumentsES6.ts(13,13): error TS9002: The 'arguments' object cannot be referenced in an arrow function. Consider using a standard function expression.
+tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArgumentsES6.ts(19,15): error TS9002: The 'arguments' object cannot be referenced in an arrow function. Consider using a standard function expression.
 
 
 ==== tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArgumentsES6.ts (4 errors) ====
     var a = () => {
         var arg = arguments[0];  // error
                   ~~~~~~~~~
-!!! error TS9002: The 'argument' object has different behaviour across Javascript versions. Use function expression or rest parameters instead
+!!! error TS9002: The 'arguments' object cannot be referenced in an arrow function. Consider using a standard function expression.
     }
     
     var b = function () {
         var a = () => {
             var arg = arguments[0];  // error
                       ~~~~~~~~~
-!!! error TS9002: The 'argument' object has different behaviour across Javascript versions. Use function expression or rest parameters instead
+!!! error TS9002: The 'arguments' object cannot be referenced in an arrow function. Consider using a standard function expression.
         }
     }
     
@@ -23,7 +23,7 @@ tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArgumentsES6
     	() => {
     		var arg = arguments[0];
     		          ~~~~~~~~~
-!!! error TS9002: The 'argument' object has different behaviour across Javascript versions. Use function expression or rest parameters instead
+!!! error TS9002: The 'arguments' object cannot be referenced in an arrow function. Consider using a standard function expression.
     	}
     }
     
@@ -31,7 +31,7 @@ tests/cases/conformance/es6/arrowFunction/emitArrowFunctionWhenUsingArgumentsES6
     foo(() => {
         var arg = arguments[0];  // error
                   ~~~~~~~~~
-!!! error TS9002: The 'argument' object has different behaviour across Javascript versions. Use function expression or rest parameters instead
+!!! error TS9002: The 'arguments' object cannot be referenced in an arrow function. Consider using a standard function expression.
     });
     
     function bar() {