Music Assistant frontend (Vue PWA)

The Music Assistant frontend/panel is developed in Vue, development instructions below.

Recommended IDE Setup

VSCode + Volar (and disable Vetur) + TypeScript Vue Plugin (Volar).

Type Support for `.vue` Imports in TS

TypeScript cannot handle type information for .vue imports by default, so we replace the tsc CLI with vue-tsc for type checking. In editors, we need TypeScript Vue Plugin (Volar) to make the TypeScript language service aware of .vue types.

If the standalone TypeScript plugin doesn't feel fast enough to you, Volar has also implemented a Take Over Mode that is more performant. You can enable it by the following steps:

Disable the built-in TypeScript Extension
1. Run Extensions: Show Built-in Extensions from VSCode's command palette
2. Find TypeScript and JavaScript Language Features, right click and select Disable (Workspace)
Reload the VSCode window by running Developer: Reload Window from the command palette.

Customize configuration

See Vite Configuration Reference.

Project Setup

nvm use node
pnpm install

Compile and Hot-Reload for Development

pnpm dev

This will launch an auto-reload development environment (usually at http://localhost:3000) Open the url in the browser and a popup will ask the location of the MA server. You can either connect to a locally launched dev server or an existing running server on port 8095.

Type-Check, Compile and Minify for Production

pnpm build

Lint with ESLint

pnpm lint

UI Framework

This project is migrating from Vuetify to shadcn-vue as its primary UI component library.

Development Guidelines

Components

Size limit: Keep components under 300–400 lines. If a component grows beyond this, split it into smaller, focused sub-components.
Single responsibility: Each component should do one thing well. Extract repeated logic or UI patterns into reusable components.
Composition over complexity: Prefer composing small components rather than building monolithic ones with many responsibilities.

UI Components

Use shadcn-vue: All new UI should use shadcn-vue components located in src/components/ui/. Do not introduce new Vuetify components.
Extend, don't override: If a shadcn-vue component needs customization, extend it via props or slots rather than overriding styles globally.
Avoid inline styles: Use Tailwind utility classes for styling. Avoid style="" attributes except for dynamic values that cannot be expressed as classes.

TypeScript

Always type props and emits: Define explicit types for all component props and emits — avoid any.
Prefer interface for object shapes: Use interface for defining data shapes and type for unions/intersections.
No implicit any: Every function parameter and return value should be typed or clearly inferrable.

State & Composables

Extract reusable logic into composables: Any stateful logic shared between two or more components belongs in a composable under src/composables/.
Keep <script setup> lean: Heavy logic (data fetching, transformations) should live in composables, not inline in the component.

Helpers & Utilities

Pure functions go in src/helpers/: Any standalone utility function (e.g. string manipulation, date formatting, data transformation) must be placed in src/helpers/ rather than inlined in a component or composable.
One file per concern: Group related helpers in a named file (e.g. src/helpers/string.ts, src/helpers/date.ts). Avoid a single catch-all utils.ts.
Test every helper: Each helper file must be covered by unit tests. For new helpers, add a corresponding test file colocated with the helper (e.g. src/helpers/string.test.ts). Existing tests under tests/helpers/ may remain, but new tests should follow the colocated pattern. Helpers with no test coverage should not be merged.

API Calls & User Feedback

Always show feedback on API calls: Every API call must be wrapped with user feedback:
- On success: call toast.success(...) with a clear confirmation message.
- On failure: call toast.error(...) with a meaningful error message — never silently swallow errors.

Example pattern:

try {
  await api.doSomething()
  toast.success("Action completed successfully")
} catch (e) {
  toast.error("Failed to complete action")
}

Do not use console.error as a substitute for user-facing feedback on API errors (or for meaningful calls).

General Best Practices

No magic numbers/strings: Extract constants with descriptive names.
Meaningful naming: Variables, functions, and components should clearly describe their purpose. Avoid abbreviations unless universally understood.
Keep templates readable: If a template expression is complex, move it to a computed property.
Clean up side effects: Always clean up event listeners and intervals in onUnmounted; manually created watchers outside component setup or manual effect scopes must also be cleaned up.
Accessibility: Use semantic HTML elements and provide aria-* attributes where appropriate.

Translation Management

We use Lokalise to manage the translation files for the Music Assistant frontend

Contributing

If you wish to assist in translating Music Assistant into a language that it currently does not support, please see here https://music-assistant.io/help/lokalise/.

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