A.6 Classes

  ClassDeclaration: ( Modified )   class BindingIdentifier_opt TypeParameters_opt ClassHeritage { ClassBody }

  ClassHeritage: ( Modified )   ClassExtendsClause_opt ImplementsClause_opt

  ClassExtendsClause:   extends  ClassType

  ClassType:   TypeReference

  ImplementsClause:   implements ClassOrInterfaceTypeList

  ClassElement: ( Modified )   ConstructorDeclaration   PropertyMemberDeclaration   IndexMemberDeclaration

  ConstructorDeclaration:   AccessibilityModifier_opt constructor ( ParameterList_opt ) { FunctionBody }   AccessibilityModifier_opt constructor ( ParameterList_opt ) ;

  PropertyMemberDeclaration:   MemberVariableDeclaration   MemberFunctionDeclaration   MemberAccessorDeclaration

  MemberVariableDeclaration:   AccessibilityModifier_opt static_opt PropertyName TypeAnnotation_opt Initializer_opt ;

  MemberFunctionDeclaration:   AccessibilityModifier_opt static_opt PropertyName CallSignature { FunctionBody }   AccessibilityModifier_opt static_opt PropertyName CallSignature ;

  MemberAccessorDeclaration:   AccessibilityModifier_opt static_opt GetAccessor   AccessibilityModifier_opt static_opt SetAccessor

  IndexMemberDeclaration:   IndexSignature ;