How to call a constructor function with new

Question

I'm a new with ReScript. I try to use it with Telegraf. I imported telegraf:

@module("telegraf")

How I can call Telegraf constructor?

let tg = new telegraf.Telegraf("bot_token")

Answer 1

Just add the @new annotation:

type t

@module("telegraf") @new
external telegraf: string => t = "Telegraf"

let tg = telegraf("")

generates

var Telegraf = require("telegraf");
var tg = new Telegraf.Telegraf("");

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