# Midy

[![GitHub CI Status](https://img.shields.io/github/workflow/status/krmax44/midy/build/master)](https://github.com/krmax44/midy/actions?query=workflow%3Abuild)
[![Code Coverage](https://img.shields.io/codecov/c/github/krmax44/midy)](https://codecov.io/gh/krmax44/midy)
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[![npm version](https://img.shields.io/npm/v/midy)](https://www.npmjs.com/package/midy)

A super-minimalistic MIDI library.

## Installation

```bash
yarn add midy
# or using npm
npm i midy
```

## Example

```js
import Midy from 'midy';

const midy = new Midy();
if (await midy.requestAccess()) {
	midy.on('noteDown', (note, channel, velocity) => {
		console.log('A key was pressed!', note, channel, velocity);
	});
}
```

## Methods

| Method name     | Parameters                               | Description                                                                        | Type               |
| --------------- | ---------------------------------------- | ---------------------------------------------------------------------------------- | ------------------ |
| `requestAccess` | _none_                                   | Request access to the Web MIDI API.                                                | `Promise<boolean>` |
| `on`            | event name `string`, listener `function` | Register an event listener. See [Houk API](https://github.com/krmax44/houk/#api)   | `void`             |
| `off`           | event name `string`, listener `function` | Unregister an event listener. See [Houk API](https://github.com/krmax44/houk/#api) | `boolean`          |

## Events

| Event name    | Description                       | Parameters                                                   |
| ------------- | --------------------------------- | ------------------------------------------------------------ |
| `noteUp`      | Triggered once a key is released. | MIDI note `number`, MIDI channel `number`, velocity `number` |
| `noteDown`    | Triggered once a key is pressed.  | MIDI note `number`, MIDI channel `number`, velocity `number` |
| `midiMessage` | Raw MIDI events.                  | MIDI event `MIDIMessageEvent`                                |

## Properties

| Property name | Description  | Type            |
| ------------- | ------------ | --------------- |
| `access`      | MIDI access  | `MIDIAccess`    |
| `inputs`      | MIDI inputs  | `MIDIInputMap`  |
| `outputs`     | MIDI outputs | `MIDIOutputMap` |
| `state`       | Access state | `'none'         | 'pending' | 'granted' | 'denied'` |


Supply Chain Attack on Axios Pulls Malicious Dependency from npm

midy

krmax44

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Ambiguous License Classifier

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Bad text encoding

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Bad semver

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What is bad dependency semver?

Bad dependency semver

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What are bidirectional unicode control characters?

Bidirectional unicode control characters

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What is bin script confusion?

Bin script confusion

This Chrome extension includes content scripts that execute JavaScript on specified websites.

What are Chrome extension content scripts?

Chrome: Content Script

This Chrome extension requests host permissions to access specific websites or domains.

What are Chrome extension host permissions?

Chrome: Host Permission

This Chrome extension requests permissions to access browser APIs, user data, or system features.

What are Chrome extension permissions?

Chrome: Permission

This Chrome extension requests wildcard host permissions that grant broad access to websites.

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Chrome: Wildcard Host Permission

Semantic versions published out of chronological order.

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Chronological version anomaly

Project maintainer's SSH key has been compromised.

What is a compromised SSH key?

Compromised SSH key

What do I need to know about license files?

Copyleft License

Contains a Critical Common Vulnerability and Exposure (CVE).

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Title

Critical CVE

Contains a high severity Common Vulnerability and Exposure (CVE).

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High CVE

Uses debug, reflection and dynamic code execution features.

What is debug access?

Debug access

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Deprecated

Contains a known deprecated SPDX license exception.

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Deprecated SPDX exception

License is deprecated which may have legal implications regarding the package's use.

What is a deprecated license?

Deprecated license

Package name is similar to other popular packages and may not be the package you want.

What is a typosquat?

Possible typosquat attack

Dynamic require can indicate the package is performing dangerous or unsafe dynamic code execution.

What is dynamic require?

Dynamic require

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What is an empty package?

Empty package

Package accesses environment variables, which may be a sign of credential stuffing or data theft.

What is environment variable access?

Environment variable access

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Explicitly Unlicensed Item

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What are extraneous dependencies?

Name

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File dependency

Accesses the file system, and could potentially read sensitive data.

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Filesystem access

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Wildcard dependency

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What are GitHub Actions taint flows?

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An input argument to this GitHub Action is being passed back as an output. If a user of this action passes untrusted input, it could be used in an insecure manner by consuming workflows.

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An input argument to this GitHub Action flows into a dangerous sink (such as shell command execution). This could allow a malicious user to inject commands or exploit the action.

GitHub Actions: Input argument flows to dangerous sink

A GitHub context variable (such as issue title, PR description, or comment body) is being exported as an environment variable. These context values are user-controlled and could be exploited by subsequent workflow steps.

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A GitHub context variable (such as issue title, PR description, or comment body) flows into a dangerous sink (such as shell command execution). This is a critical security issue that could allow command injection or code execution attacks.

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An environment variable flows into a dangerous sink (such as shell command execution). If this environment variable comes from an untrusted source, it could be exploited to inject commands.

GitHub Actions: Environment variable flows to dangerous sink

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Git dependency

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GitHub dependency

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AI-detected potential code anomaly

AI has identified this package as a potential typosquat of a more popular package. This suggests that the package may be intentionally mimicking another package's name, description, or other metadata.

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AI-detected possible typosquat

AI has identified this package as malware. This is a strong signal that the package may be malicious.

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AI-detected potential malware

AI has determined that this package may contain potential security issues or vulnerabilities.

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AI-detected potential security risk

Contains native code (e.g., compiled binaries or shared libraries). Including native code can obscure malicious behavior.

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Native code

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High entropy strings

Contains unicode homoglyphs which can be used in supply chain confusion attacks.

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Unicode homoglyphs

Contains a dependency which resolves to a remote HTTP URL which could be used to inject untrusted code and reduce overall package reliability.

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HTTP dependency

Install scripts are run when the package is installed or built. Malicious packages often use scripts that run automatically to execute payloads or fetch additional code.

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Install scripts

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Invalid manifest file

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Invisible chars

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License change

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Long strings

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Minified code

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Misc. License Issues

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Missing dependency

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Missing license

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Mixed license

Package contains a modified version of an SPDX license exception. Please read carefully before using this code.

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Modified license exception

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What is a modified license?

Modified license

What is network access?

Network access

A new npm collaborator published a version of the package for the first time. New collaborators are usually benign additions to a project, but do indicate a change to the security surface area of a package.

Method name	Parameters	Description	Type
`requestAccess`	none	Request access to the Web MIDI API.	`Promise<boolean>`
`on`	event name `string`, listener `function`	Register an event listener. See Houk API	`void`
`off`	event name `string`, listener `function`	Unregister an event listener. See Houk API	`boolean`

midy

Midy

Installation

Example

Methods

Events

Properties

Keywords

Related posts

Event name	Description	Parameters
`noteUp`	Triggered once a key is released.	MIDI note `number`, MIDI channel `number`, velocity `number`
`noteDown`	Triggered once a key is pressed.	MIDI note `number`, MIDI channel `number`, velocity `number`
`midiMessage`	Raw MIDI events.	MIDI event `MIDIMessageEvent`

Property name	Description	Type
`access`	MIDI access	`MIDIAccess`
`inputs`	MIDI inputs	`MIDIInputMap`
`outputs`	MIDI outputs	`MIDIOutputMap`
`state`	Access state	`'none'

midy

Midy

Installation

Example

Methods

Events

Properties

Keywords

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