Make new error an error, not message

Author: sandersn

src/compiler/diagnosticMessages.json

@@ -4417,7 +4417,7 @@
         "code": 6233
     },
     "This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?": {
-        "category": "Message",
+        "category": "Error",
         "code": 6234
     },
 

tests/baselines/reference/accessorAccidentalCallDiagnostic.errors.txt

@@ -1,4 +1,4 @@
-tests/cases/compiler/accessorAccidentalCallDiagnostic.ts(6,14): message TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
+tests/cases/compiler/accessorAccidentalCallDiagnostic.ts(6,14): error TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
   Type 'Number' has no call signatures.
 
 
@@ -10,7 +10,7 @@ tests/cases/compiler/accessorAccidentalCallDiagnostic.ts(6,14): message TS6234:
     function test24554(x: Test24554) {
         return x.property();
                  ~~~~~~~~
-!!! message TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
-!!! message TS6234:   Type 'Number' has no call signatures.
+!!! error TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
+!!! error TS6234:   Type 'Number' has no call signatures.
     }
 

tests/baselines/reference/instancePropertiesInheritedIntoClassType.errors.txt

@@ -1,10 +1,10 @@
 tests/cases/conformance/classes/members/classTypes/instancePropertiesInheritedIntoClassType.ts(4,13): error TS1056: Accessors are only available when targeting ECMAScript 5 and higher.
 tests/cases/conformance/classes/members/classTypes/instancePropertiesInheritedIntoClassType.ts(7,13): error TS1056: Accessors are only available when targeting ECMAScript 5 and higher.
-tests/cases/conformance/classes/members/classTypes/instancePropertiesInheritedIntoClassType.ts(19,16): message TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
+tests/cases/conformance/classes/members/classTypes/instancePropertiesInheritedIntoClassType.ts(19,16): error TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
   Type 'Number' has no call signatures.
 tests/cases/conformance/classes/members/classTypes/instancePropertiesInheritedIntoClassType.ts(26,13): error TS1056: Accessors are only available when targeting ECMAScript 5 and higher.
 tests/cases/conformance/classes/members/classTypes/instancePropertiesInheritedIntoClassType.ts(29,13): error TS1056: Accessors are only available when targeting ECMAScript 5 and higher.
-tests/cases/conformance/classes/members/classTypes/instancePropertiesInheritedIntoClassType.ts(41,16): message TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
+tests/cases/conformance/classes/members/classTypes/instancePropertiesInheritedIntoClassType.ts(41,16): error TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
   Type 'String' has no call signatures.
 
 
@@ -33,8 +33,8 @@ tests/cases/conformance/classes/members/classTypes/instancePropertiesInheritedIn
         r.y = 4;
         var r6 = d.y(); // error
                    ~
-!!! message TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
-!!! message TS6234:   Type 'Number' has no call signatures.
+!!! error TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
+!!! error TS6234:   Type 'Number' has no call signatures.
 
     }
 
@@ -62,6 +62,6 @@ tests/cases/conformance/classes/members/classTypes/instancePropertiesInheritedIn
         r.y = '';
         var r6 = d.y(); // error
                    ~
-!!! message TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
-!!! message TS6234:   Type 'String' has no call signatures.
+!!! error TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
+!!! error TS6234:   Type 'String' has no call signatures.
     }

tests/baselines/reference/instancePropertyInClassType.errors.txt

@@ -1,10 +1,10 @@
 tests/cases/conformance/classes/members/classTypes/instancePropertyInClassType.ts(4,13): error TS1056: Accessors are only available when targeting ECMAScript 5 and higher.
 tests/cases/conformance/classes/members/classTypes/instancePropertyInClassType.ts(7,13): error TS1056: Accessors are only available when targeting ECMAScript 5 and higher.
-tests/cases/conformance/classes/members/classTypes/instancePropertyInClassType.ts(17,16): message TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
+tests/cases/conformance/classes/members/classTypes/instancePropertyInClassType.ts(17,16): error TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
   Type 'Number' has no call signatures.
 tests/cases/conformance/classes/members/classTypes/instancePropertyInClassType.ts(24,13): error TS1056: Accessors are only available when targeting ECMAScript 5 and higher.
 tests/cases/conformance/classes/members/classTypes/instancePropertyInClassType.ts(27,13): error TS1056: Accessors are only available when targeting ECMAScript 5 and higher.
-tests/cases/conformance/classes/members/classTypes/instancePropertyInClassType.ts(37,16): message TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
+tests/cases/conformance/classes/members/classTypes/instancePropertyInClassType.ts(37,16): error TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
   Type 'String' has no call signatures.
 
 
@@ -31,8 +31,8 @@ tests/cases/conformance/classes/members/classTypes/instancePropertyInClassType.t
         r.y = 4;
         var r6 = c.y(); // error
                    ~
-!!! message TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
-!!! message TS6234:   Type 'Number' has no call signatures.
+!!! error TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
+!!! error TS6234:   Type 'Number' has no call signatures.
 
     }
 
@@ -58,6 +58,6 @@ tests/cases/conformance/classes/members/classTypes/instancePropertyInClassType.t
         r.y = '';
         var r6 = c.y(); // error
                    ~
-!!! message TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
-!!! message TS6234:   Type 'String' has no call signatures.
+!!! error TS6234: This expression is not callable because it is a 'get' accessor. Did you mean to use it without '()'?
+!!! error TS6234:   Type 'String' has no call signatures.
     }