Repromise is a proposed Reason binding to promises, that also comes with an isomorphic native promise implementation. This repo shows how to use the native promises with esy.
main.re is a simple program that prints Hello, world!,
asynchronously.
The interesting files are package.json and jbuild,
which show how to depend on the Repromise development repo. The empty *.opam
file is needed for Jbuilder (Dune) to recognize the repo as an OCaml/Reason
package.
To build and run, first install esy with
npm install -g esy
Then, install your system's development package for libuv 1.x. On Ubuntu, this is done with
sudo apt install libuv1-dev
Then do
git clone https://github.com/aantron/repromise-example-esy.git
cd repromise-example-esy
esy install
esy build
esy jbuilder exec ./main.exe
This may take a little while to build all the OCaml deps, but then you should
see Hello, world!.
If you see an error message about missing makeinfo from the libffi part of
the build, you can install it with
sudo apt install texinfo
on Ubuntu, and similar commands on other systems. We will remove the libffi dependency in the future. We also plan to vendor libuv.