[Bug]: Running in ESM (*.mjs) returns "ERROR : use init before"

[SunboX]

Expected behavior

getting a wifi networks list

Current behavior

Error thrown: ERROR : use init before

Which are the affected features

• node API
• CLI

Which is your operating system?

Linux

Environment

OpenEmbedded / Yocto / Linux kernel 5.4.88 running on i.MX6X with ath6k and bcm43236b drivers

Version of node-wifi

2.0.16

Steps to Reproduce

app.mjs

import * as wifi from 'node-wifi'

export class App {

    static async start() {
        console.log(process.platform)

        wifi.init({
            debug: true,
            iface: null // network interface, choose a random wifi interface if set to null
        })

        wifi
            .scan()
            .then(networks => {
                console.log(networks)
            })
            .catch(e => {
                console.log(e)
            })
    }
}

App.start()

$ node app.mjs

linux
ERROR : use init before

Solutions

maybe related to

exports.scan = () => {
  throw new Error('ERROR : use init before');
};

[SunboX]

Running it on macOS:

$ node app.mjs 

darwin
(node:12343) UnhandledPromiseRejectionWarning: Error: ERROR : use init before
    at Module.exports.scan (/xxx/node_modules/node-wifi/src/wifi.js:77:9)
    at Function.start (file:///xxx/app.mjs:14:14)
    at file:///xxx/app.mjs:24:5
    at ModuleJob.run (internal/modules/esm/module_job.js:183:25)
    at async Loader.import (internal/modules/esm/loader.js:178:24)
    at async Object.loadESM (internal/process/esm_loader.js:68:5)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:12343) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:12343) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

[zN3utr4l]

When using type: "module", importing a CommonJS such as node-wifi requires special attention. node-wifi does not natively support ESM, so you must use the createRequire method of Node.js.

import { createRequire } from 'module';
const require = createRequire(import.meta.url);

const wifi = require('node-wifi');