vue-peaks

A lightweight Vue wrapper around the bbc/peaks.js audio waveform UI component.

vue-peaks aims to simplify the use of peaks.js in a Vue3 environment. It provides a single component, AudioPeaks.

Explore the live examples.

Installation

npm install vue-peaks --save

Installing vue-peaks also installs peaks.js (version 3) as a dependency. Additionally, peaks.js uses Konva (version 8 or 9) and waveform-data (version 4) as peer dependencies; these will get installed with vue-peaks, if not already available.

How to use

Basic examples

vue-peaks provides three modes of operation:

• Simple mode: just set the media URL, and all views are automatically rendered by default
• Slot mode: the media element and additional views are provided using named slots
• External mode: the media element and additional views are referenced by id or HTML element references

Preferred: Import the compiled component:

import { AudioPeaks } from 'vue-peaks';
// default styles for the AudioPeaks component
import 'vue-peaks/dist/style.css';

Note: Even if you do not use the default (or any other) styles, the overview and zoomview panes still do have a small minimum size set.

Alternative: The package does not currently properly export types, see issue #17. To get TypeScript support, you can also directly include the vue component as SFC:

import AudioPeaks from 'vue-peaks/src/components/AudioPeaks.vue';
// default styles for the AudioPeaks component are already contained in the SFC

Simple mode

By default, the AudioPeaks Vue component template creates a new audio element, with the given source URL, and both view panes (overview and zoom, which are rendered with a default size) and a controls pane. A new audio context is created and used to compute the waveform.

<AudioPeaks src='https://lib.replayer.app/your-light-by-lidija-roos.mp3' />

Slot mode

To provide your own media element, just place it inside the AudioPeaks element (a.k.a. the slot). Vue-peaks will use the first media element in the slot. A new audio context is created and used to compute the waveform.

<AudioPeaks>
  <span>You can also add additional HTML content.</span>
  <audio controls>
    <source src='https://lib.replayer.app/your-light-by-lidija-roos.mp3' />
  </audio>
</AudioPeaks>

Using a specified media element ("external" mode)

If you already have an existing media element, you can reference it by it's (unique) id, or as an HTMLMediaElement object. A new audio context is created and used to compute the waveform.

There are also properties available for the overview area and the zoom view area.

<audio controls id='externalMediaElement'>
  <source src='https://lib.replayer.app/your-light-by-lidija-roos.mp3' />
</audio>
<div><span>
    Using the external media element above.</span></div>
<AudioPeaks mediaElementId='externalMediaElement'>
</AudioPeaks>

See a more detailed documentation and live examples on the GitHub Pages.

Troubleshooting

Uncaught TypeError: Cannot read properties of null (reading 'isCE') When you use Webpack and locally link to the vue-peaks library, make sure vue is not included twice. See vuejs/core#4478 (comment)

Your vue.config.js should look like

const { defineConfig } = require('@vue/cli-service')
const path = require('path') //add

module.exports = defineConfig({
  transpileDependencies: true,
  chainWebpack(config) {
    config.resolve.symlinks(false) //add
    config.resolve.alias.set( 'vue', path.resolve('./node_modules/vue')) // add
  },
})

Build & Development

Project Setup

npm install

Compile and Hot-Reload for Development

npm run dev

Compile and publish on GitHub pages

# setup (required once)
git config --global pull.rebase true
git config --global push.autoSetupRemote true

# remove old code in gh-pages (prevents merge conflicts when pushing subtree)
git checkout gh-pages
git rebase -Xtheirs origin/main
git checkout main

# cleanup
rm -rf dist
npm run build

# to publish to GitHub Pages (requires committing and pushing the build in the /dist folder)
git add dist -f
git commit -m 'built for gh-pages'
git push
npm run publish-gh-pages

Compile for Production an publish as Library

• Update version
• Update CHANGELOG.md
• Disable the App mode and enable the library mode
  • in vite.config.ts
    • uncomment the resolve import
    • comment out the rollupOptions for the App Mode
    • uncomment the lib property and the subsequent rollupOptions for the Library Mode

# cleanup
rm -rf dist
npm run build
# to publish to npm
npm publish

• Change back to App mode

Run Unit Tests with Vitest

npm run test:unit

Credits

• peaks.js, a client-side JavaScript component to display and interact with audio waveforms in the browser. (Released under the LGPL-3.0 license, by the British Broadcasting Corporation and contributors)
• Vue.js, the progressive JavaScript framework. (Released under the MIT License, Copyright © 2014-2021 Evan You)
• Bulma, the modern CSS framework that just works. (Released under the MIT License, by Jeremy Thomas)
• Bulmaswatch, free themes for Bulma. (Released under the MIT License, by Jenil Gogari)
• Material Design Icons, the original. Following Google's Material Design guidelines for system icons. (Icons released under the Apache 2.0 License, by pictogrammers.com)
• Jest, a delightful JavaScript Testing Framework. (Released under the MIT License, by Facebook)
• Music from the Album "Not For Sale" by Lidija Roos (Released to the public, by Lidija Roos)
• @highlightjs/vue-plugin, provides a highlightjs component for use in your Vue.js 3 applications. (Released under the BSD-3-Clause license, by the highlight.js team)
• @rushstack/eslint-patch, a patch that improves how ESLint loads plugins when working in a monorepo with a reusable toolchain. (Released under the MIT License, by Microsoft)
• @types/jsdom, @types/node, the repository for high quality TypeScript type definitions. (Released under the MIT License, by various contributors)
• vite, vitest, @vitejs/plugin-vue, next Generation Frontend Tooling. (Released under the MIT License, by the vite team)
• eslint, a tool for identifying and reporting on patterns found in ECMAScript/JavaScript code. (Released under the MIT License, by the eslint team)
• jsdom, a pure-JavaScript implementation of many web standards. (Released under the MIT License, by the jsdom team)
• npm-run-all, a CLI tool to run multiple npm-scripts in parallel or sequential. (Released under the MIT License, by Toru Nagashima)
• prettier, an opinionated Code Formatter. (Released under the MIT License, by the prettier team)
• typescript, a language for application-scale JavaScript. (Released under the Apache-2.0 license, by Microsoft)
• vue-tsc, high-performance tooling for Vue. (Released under the MIT License, by Johnson Chu)
• Post Making and publishing components with Vue 3 and Vite by Matija Novosel.

Initial code is taken from

• peaks-vue-demo by Giovanni Candeo (MIT-licensed)
• vue-waveform-template by Thomas Parisot (MIT-licensed)

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vue-peaks is created with love by Marcel Suter for the Replayer project.