TypeError: Cannot read properties of undefined (reading 'channels')

[JanVeb]

Description Describe the problem and how to reproduce it. If appropriate, include code samples, screenshots, error messages, etc.

Environment: Specify the environment where you are witnessing the problem:

• Library version and flavour (CJS, ESM or IIFE)
• Runtime (browser or Node.js) and version
• Language (JavaScript or TypeScript)
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Details Add any other information, context or details that could help track down the problem.

Trying to add web midi to a project but have issues:

TypeError: Cannot read properties of undefined (reading 'channels') at onEnabled (main.js:303:1)

import {WebMidi} from "webmidi"; WebMidi .enable() .then(onEnabled) .catch(err => console.log(err));

function onEnabled() { if (WebMidi.inputs.length < 1) { document.body.innerHTML+= "No device detected."; } else { WebMidi.inputs.forEach((device, index) => { document.body.innerHTML+= ${index}: ${device.name} <br>; }); }

const mySynth = WebMidi.inputs[0]; // const mySynth = WebMidi.getInputByName("TYPE NAME HERE!")

mySynth.channels[0].addListener("noteon", e => { document.body.innerHTML+= ${e.note.name} <br>; });

}

window.WebMidi = WebMidi;

when I call window.WebMidi() in console output is:{ "eventMap": {}, "eventsSuspended": false, "defaults": { "note": { "attack": 0.5039370078740157, "release": 0.5039370078740157, "duration": null } }, "interface": {}, "validation": true, "_inputs": [], "_disconnectedInputs": [], "_outputs": [], "_disconnectedOutputs": [], "_stateChangeQueue": [], "_octaveOffset": 0, "constructor": null }

calling window.inputs logs []

Same error appears when I try to play a note instead.

App is developed with react.js, ionic and capacitor.js Node.js v17.8.0 Language: Javascript On MacOs BigSur

[djipco]

MIDI channels are from 1 to 16. There is no channel 0.