Enforce NLT restriction after 'accessor' keyword (#52763)

Author: rbuckton

src/compiler/parser.ts

@@ -2684,7 +2684,6 @@ namespace Parser {
                 return canFollowExportModifier();
             case SyntaxKind.DefaultKeyword:
                 return nextTokenCanFollowDefaultKeyword();
-            case SyntaxKind.AccessorKeyword:
             case SyntaxKind.StaticKeyword:
             case SyntaxKind.GetKeyword:
             case SyntaxKind.SetKeyword:

tests/baselines/reference/autoAccessor11.errors.txt

@@ -0,0 +1,27 @@
+tests/cases/conformance/classes/propertyMemberDeclarations/autoAccessor11.ts(2,5): error TS2300: Duplicate identifier 'accessor'.
+tests/cases/conformance/classes/propertyMemberDeclarations/autoAccessor11.ts(9,5): error TS2300: Duplicate identifier 'accessor'.
+tests/cases/conformance/classes/propertyMemberDeclarations/autoAccessor11.ts(12,14): error TS2300: Duplicate identifier 'accessor'.
+
+
+==== tests/cases/conformance/classes/propertyMemberDeclarations/autoAccessor11.ts (3 errors) ====
+    class C {
+        accessor
+        ~~~~~~~~
+!!! error TS2300: Duplicate identifier 'accessor'.
+        a
+    
+        static accessor
+        b
+    
+        static
+        accessor
+        ~~~~~~~~
+!!! error TS2300: Duplicate identifier 'accessor'.
+        c
+    
+        accessor accessor
+                 ~~~~~~~~
+!!! error TS2300: Duplicate identifier 'accessor'.
+        d;
+    }
+    

tests/baselines/reference/autoAccessor11.js

@@ -0,0 +1,30 @@
+//// [autoAccessor11.ts]
+class C {
+    accessor
+    a
+
+    static accessor
+    b
+
+    static
+    accessor
+    c
+
+    accessor accessor
+    d;
+}
+
+
+//// [autoAccessor11.js]
+class C {
+    accessor;
+    a;
+    static accessor;
+    b;
+    static accessor;
+    c;
+    #accessor_accessor_storage;
+    get accessor() { return this.#accessor_accessor_storage; }
+    set accessor(value) { this.#accessor_accessor_storage = value; }
+    d;
+}

tests/baselines/reference/autoAccessor11.symbols

@@ -0,0 +1,30 @@
+=== tests/cases/conformance/classes/propertyMemberDeclarations/autoAccessor11.ts ===
+class C {
+>C : Symbol(C, Decl(autoAccessor11.ts, 0, 0))
+
+    accessor
+>accessor : Symbol(C.accessor, Decl(autoAccessor11.ts, 0, 9))
+
+    a
+>a : Symbol(C.a, Decl(autoAccessor11.ts, 1, 12))
+
+    static accessor
+>accessor : Symbol(C.accessor, Decl(autoAccessor11.ts, 2, 5), Decl(autoAccessor11.ts, 5, 5))
+
+    b
+>b : Symbol(C.b, Decl(autoAccessor11.ts, 4, 19))
+
+    static
+    accessor
+>accessor : Symbol(C.accessor, Decl(autoAccessor11.ts, 2, 5), Decl(autoAccessor11.ts, 5, 5))
+
+    c
+>c : Symbol(C.c, Decl(autoAccessor11.ts, 8, 12))
+
+    accessor accessor
+>accessor : Symbol(C.accessor, Decl(autoAccessor11.ts, 9, 5))
+
+    d;
+>d : Symbol(C.d, Decl(autoAccessor11.ts, 11, 21))
+}
+

tests/baselines/reference/autoAccessor11.types

@@ -0,0 +1,30 @@
+=== tests/cases/conformance/classes/propertyMemberDeclarations/autoAccessor11.ts ===
+class C {
+>C : C
+
+    accessor
+>accessor : any
+
+    a
+>a : any
+
+    static accessor
+>accessor : any
+
+    b
+>b : any
+
+    static
+    accessor
+>accessor : any
+
+    c
+>c : any
+
+    accessor accessor
+>accessor : any
+
+    d;
+>d : any
+}
+

tests/cases/conformance/classes/propertyMemberDeclarations/autoAccessor11.ts

@@ -0,0 +1,16 @@
+// @target: es2022
+
+class C {
+    accessor
+    a
+
+    static accessor
+    b
+
+    static
+    accessor
+    c
+
+    accessor accessor
+    d;
+}