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.

RE
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];