JS-call-OCaml.adoc

JS Calling OCaml

Since BuckleScript guarantees that all OCaml functions are exported as is, no extra work is required to expose OCaml functions to JavaScript.

Caution

external exports are not exported as JS functions, if you really want to export those external functions, please write val instead operators are escaped, since Javascript does not support user defined operators. For example, instead of calling Pervasives.(^), you have to call Pervasives.$caret from your JavaScript functions

If users want to consume some OCaml features only available in OCaml but not in JS, we recommend users to export it as functions.

For example, data constructors are not available in JS

  type t =
    | Cons of int * t
    | Nil

Currently, we recommend the user expose the constructor as a function so that it can be constructed from the JS side.

let cons x y = Cons (x,y)
let nil = Nil

Note	In the future, we will derive these functions to automate this process.