Ast_util (melange.Melange_ppx_lib.Ast

type label_exprs =
  list((Asttypes.loc(Longident.t), Melange_compiler_libs.Parsetree.expression));

let js_property: 
  Melange_compiler_libs.Location.t =>
  Melange_compiler_libs.Parsetree.expression =>
  string =>
  Melange_compiler_libs.Parsetree.expression_desc;

let ocaml_obj_as_js_object: 
  Melange_compiler_libs.Location.t =>
  Melange_compiler_libs.Ast_mapper.mapper =>
  Melange_compiler_libs.Parsetree.pattern =>
  list(Melange_compiler_libs.Parsetree.class_field) =>
  Melange_compiler_libs.Parsetree.expression_desc;