Melange_ppx_lib.Ast_pat
val is_unit_cont : yes:'a -> no:'a -> t -> 'a
val arity_of_fun : t -> Melange_compiler_libs.Parsetree.expression -> int
arity_of_fun pat e
tells the arity of expression fun pat -> e
val labels_of_fun :
Melange_compiler_libs.Parsetree.expression ->
Asttypes.arg_label list
val is_single_variable_pattern_conservative : t -> bool