NodeJS Special Variables

NodeJS has several file local variables: __dirname, __filename, _module, and require. Their semantics are more like macros instead of functions.

bs.node exposes support for these.

OCaml

let dirname : string option = [%bs.node __dirname]
let filename : string option = [%bs.node __filename]
let _module : Node.node_module option = [%bs.node _module]
let require : Node.node_require option = [%bs.node require]

ReasonML

let dirname: option(string) = [%bs.node __dirname];
let filename: option(string) = [%bs.node __filename];
let _module: option(Node.node_module) = [%bs.node _module];
let require: option(Node.node_require) = [%bs.node require];