Get MIDI input and output devices from the Web MIDI API by name

findMidiDevices.js

function findMidiDevices(name) {
  return navigator
    .requestMIDIAccess()
    .then((midiAccess) => {
      let input, output;
      midiAccess.inputs.forEach((currentInput) => {
        if(currentInput.name === name) input = currentInput;
      });
      midiAccess.outputs.forEach((currentOutput) => {
        if(currentOutput.name === name) output = currentOutput;
      })
      return { input, output };
    });
}