re-localforage

yarn add localforage
yarn add re-localforage

Then add

  "bs-dependencies": ["re-localforage"]

to your bsconfig.json.

Then you can use it like this (assuming you have some webpack setup that can import Elm files like elm-webpack-loader):

let lf = LocalForage.instance;
/* This'll be a promise of unit. */
let setItemPromise = lf##setItem("user", someJson)
/* This'll be a promise with some json in it.*/
let getItemPromise = lf##getItem("user")