* add TSNamespaceExportDeclaration * extract ast-types/fork * add TSEnumDeclaration and TSEnumMember * add TSImportEqualsDeclaration and TSExternalModuleReference * add TSInterfaceDeclaration and type annotation to TSMethodSignature * add TSModuleDeclaration, TSDeclareKeyword, TSModuleBlock and fix TSNamespaceExportDeclaration * remove workaround