A.10 Ambients

  AmbientDeclaration:   declare AmbientVariableDeclaration   declare AmbientFunctionDeclaration   declare AmbientClassDeclaration   declare AmbientEnumDeclaration   declare AmbientNamespaceDeclaration

  AmbientVariableDeclaration:   var AmbientBindingList ;   let AmbientBindingList ;   const AmbientBindingList ;

  AmbientBindingList:   AmbientBinding   AmbientBindingList , AmbientBinding

  AmbientBinding:   BindingIdentifier TypeAnnotation_opt

  AmbientFunctionDeclaration:   function BindingIdentifier CallSignature ;

  AmbientClassDeclaration:   class BindingIdentifier TypeParameters_opt ClassHeritage { AmbientClassBody }

  AmbientClassBody:   AmbientClassBodyElements_opt

  AmbientClassBodyElements:   AmbientClassBodyElement   AmbientClassBodyElements AmbientClassBodyElement

  AmbientClassBodyElement:   AmbientConstructorDeclaration   AmbientPropertyMemberDeclaration   IndexSignature

  AmbientConstructorDeclaration:   constructor ( ParameterList_opt ) ;

  AmbientPropertyMemberDeclaration:   AccessibilityModifier_opt static_opt PropertyName TypeAnnotation_opt ;   AccessibilityModifier_opt static_opt PropertyName CallSignature ;

  AmbientEnumDeclaration:   EnumDeclaration

  AmbientNamespaceDeclaration:   namespace IdentifierPath { AmbientNamespaceBody }

  AmbientNamespaceBody:   AmbientNamespaceElements_opt

  AmbientNamespaceElements:   AmbientNamespaceElement   AmbientNamespaceElements AmbientNamespaceElement

  AmbientNamespaceElement:   export_opt AmbientVariableDeclaration   export_opt AmbientLexicalDeclaration   export_opt AmbientFunctionDeclaration   export_opt AmbientClassDeclaration   export_opt InterfaceDeclaration   export_opt AmbientEnumDeclaration   export_opt AmbientNamespaceDeclaration   export_opt ImportAliasDeclaration

  AmbientModuleDeclaration:   declare module StringLiteral {  DeclarationModule }