Export OCaml code to JavaScript
The easiest way to export OCaml values (e.g., functions) to JavaScript is to create a JavaScript object containing all values to export and to make the object reachable.
let _ =
Js.export "myMathLib"
(object%js
method add x y = x +. y
method abs x = abs_float x
val zero = 0.
end)
myMathLib.add(3,4)
Using the Node.js module system
Js.export and Js.export_all will export a value to module.exports if it exists.
# cat math.ml let _ = Js.export_all (object%js method add x y = x +. y method abs x = abs_float x val zero = 0. end) # ocamlfind ocamlc -verbose \ -package js_of_ocaml -package js_of_ocaml.ppx \ -linkpkg math.ml -o math.byte # js_of_ocaml math.byte # node # > var math = require("./math.js"); # > math.add(2,3)