Melange_ppx_lib.Ppx_entryval unsafe_mapper : Melange_compiler_libs.Ast_mapper.mapperval rewrite_signature :
Melange_compiler_libs.Parsetree.signature ->
Melange_compiler_libs.Parsetree.signatureval rewrite_implementation :
Melange_compiler_libs.Parsetree.structure ->
Melange_compiler_libs.Parsetree.structure