Device class / typings are not exported

[Benji]

It's impossible to declare TypeScript typings for a function that takes in a USB device as an argument, since it is not exported:

import usb from "https://deno.land/x/webusb@0.4.0/mod.ts"

const devices = await usb.getDevices()

initDevice(devices[0])

async function initDevice(device: /* what goes here? */) {
    await device.open()
    console.log(`${device.productName} - ${device.serialNumber}`);
}

Likewise, it's impossible to tell if an object is a USB device via an instanceof check, since the class isn't exported either.

Could you consider exporting the types/classes?

[Divy Srivastava]

types and classes should be exported in 0.4.1. The module might not work well with TypeScript though, as I use --no-check for most of the things. PRs fixing type issues are welcome.

[Benji]

Gotcha 👍 In case anyone else stumbles upon this issue, one workaround is to use external typings. This depends on the implementation being aligned with the spec

// @deno-types="https://esm.sh/@types/w3c-web-usb/index.d.ts"
import "https://deno.land/x/webusb@0.4.0/mod.ts"

// Accessible via `navigator.usb`