Js_of_ocaml_compiler.SubstSourceThe operations of this module substitute variable names that appear in expressions, except for binders, i.e., names on the right-hand side of a Code.instr.Let.
The operations of this module also substitute the variables names that appear on the left-hand-side of a Code.instr.Let, or as block parameters, or as closure parameters, or are bound by an exception handler.