---
title: Contribution
description: Learn on how to contribute to shadcn/vue.
---
<script setup lang="ts">
import { Button } from "@/registry/new-york/ui/button"

const latestSyncCommitTag = "06cc0cdf3d080555d26abbe6639f2d7f6341ec73"

const latestSyncCommitUrl = `https://github.com/shadcn-ui/ui/commit/${latestSyncCommitTag}`
const diffUrl = `https://github.com/shadcn-ui/ui/compare/${latestSyncCommitTag}...main`
</script>

## Introduction

Thanks for your interest in contributing to shadcn-vue.com. We're happy to have you here.

Please take a moment to review this document before submitting your first pull request. We also strongly recommend that you check for open issues and pull requests to see if someone else is working on something similar.

If you need any help, feel free to reach out to the core team on [Discord](https://chat.unovue.com/).

This guide provides detailed information to help new contributors.

## About this repository

This repository is a monorepo.

- We use [pnpm](https://pnpm.io) and [`workspaces`](https://pnpm.io/workspaces) for development.

## Project Structure

The GitHub repository consists of the several folders. here's a quick view.

<VPImage
    alt="folder-structure"
    class="block" :image="{
        dark: '/diagrams/structure-dark.svg',
        light: '/diagrams/structure-light.svg',
    }"
/>

1. **packages** -
Contains source code for supporting `nuxt` as a module and the `cli` to add new components.

2. **apps/www** -
The main folder that holds the source code for the website and every `shadcn/vue` component. This folder contains important sub-folders and is a subproject with its own `package.json`.

3. **.vitepress** -
Contains the configuration and source code for `vitepress` and the `shadcn/vue` website.

4. **src** -
Hosts the main source code for every `shadcn/vue` component or demo and their documentation on the website.

5. **\_\_registry\_\_** -
Holds the registry file generated by `scripts/build-registry.ts` to serve components for the `cli`. This folder's content is auto-generated and should not be edited manually.

6. **scripts** -
Contains various helper scripts, such as `build-registry.ts`, which automatically generates the `__registry__` folder.

7. **content** -
This folder holds all the documentation for the `/docs` route. Each component has one `.md` file documenting the installation and usage of the component.

8. **examples** -
Holds all examples not part of `/docs`, like the [main page](/).

9. **registry** -
The main folder hosts the source code for different styles of every component. This is likely the main folder you'll be changing.

We support two different styles for every component in `shadcn/vue`:

1. Default
2. New York

Every component added to the repository must support both versions, including the main source code and associated demos.

When adding or modifying components, please ensure that:

1. You make the changes for every style.
2. You update the documentation.
3. You run `pnpm build:registry` to update the registry.

## Development

Start by cloning the repository:

```bash
git clone git@github.com:unovue/shadcn-vue.git
```

### Install dependencies

```bash
pnpm install
```

### Run a workspace

You can use the `pnpm --filter=[WORKSPACE]` command to start the development process for a workspace or some of the shortcut command that we have setup.

#### Examples

1. To run the `shadcn-vue.com` website:

```bash
pnpm dev
```

2. To run the `shadcn-vue` cli package:

```bash
pnpm dev:cli
```

## Documentation

The documentation for this project is located in the `www` workspace. You can run the documentation locally by running the following command:

```bash
pnpm dev
```

Documentation is written using [md](https://vitepress.dev/guide/markdown). You can find the documentation files in the `apps/www/src/content` directory.

## CLI

The `shadcn-vue` package is a CLI for adding components to your project. You can find the documentation for the CLI [here](https://shadcn-vue.com/docs/cli).

Any changes to the CLI should be made in the `packages/cli` directory. If you can, it would be great if you could add tests for your changes.

## Testing

Tests are written using [Vitest](https://vitest.dev). You can run all the tests from the root of the repository.

```bash
pnpm test
```

Please ensure that the tests are passing when submitting a pull request. If you're adding new features, please include tests.

## Commit Convention

Before you create a Pull Request, please check whether your commits comply with
the commit conventions used in this repository.

When you create a commit we kindly ask you to follow the convention
`category(scope or module): message` in your commit message while using one of
the following categories:

- `feat / feature`: all changes that introduce completely new code or new
  features
- `fix`: changes that fix a bug (ideally you will additionally reference an
  issue if present)
- `refactor`: any code related change that is not a fix nor a feature
- `docs`: changing existing or creating new documentation (i.e. README, docs for
  usage of a lib or cli usage)
- `build`: all changes regarding the build of the software, changes to
  dependencies or the addition of new dependencies
- `test`: all changes regarding tests (adding new tests or changing existing
  ones)
- `ci`: all changes regarding the configuration of continuous integration (i.e.
  github actions, ci system)
- `chore`: all changes to the repository that do not fit into any of the above
  categories

  e.g. `feat(components): add new prop to the avatar component`

If you are interested in the detailed specification you can visit [Conventional Commits](https://www.conventionalcommits.org/).

## SFC - Single File Components

Multiple components are integrated into one file in `shadcn/ui` - the React version of `shadcn` - while Vue only supports one component per file, hence the name Single File Component (SFC). In such cases, you need to create separate files for each component part and then export them all in an `index.ts` file.

See the [`Accordion`](https://github.com/unovue/shadcn-vue/tree/v0.10.2/apps/www/registry/default/ui/accordion) source code as an example.

## Wrapping Reka UI Components

[Reka UI](https://www.reka-ui.com) hosts many low-level UI components that are used to build reusable components.
There are many cases that you need to wrap `Reka UI` components.

### Props & Events
All of the `Reka UI` compoennts expose their prop and emit types. We need to forward any props/events that are coming from outside to the `Reka UI` component.

To do so, we have a helper function named [`useForwardPropsEmits`](https://www.reka-ui.com/docs/utilities/use-forward-props-emits.html) that combines props and events that must be binded to the child radix component.

To be more clear, the function `useForwardPropsEmits` takes in props and an optional emit function, and returns a
computed object that combines the parsed props and emits as props.

Here's an example from `Accordion` root component.

```vue
<script setup lang="ts">
import {
  AccordionRoot,
  type AccordionRootEmits,
  type AccordionRootProps,
  useForwardPropsEmits,
} from 'reka-ui'

const props = defineProps<AccordionRootProps>()
const emits = defineEmits<AccordionRootEmits>()

const forwarded = useForwardPropsEmits(props, emits)
</script>

<template>
  <AccordionRoot v-bind="forwarded">
    <slot />
  </AccordionRoot>
</template>
```

As you can see, `AccordionRootEmits` and `AccordionRootProps` types are imported from radix, combined with `useForwardPropsEmits` and then are binded using `v-bind` syntax.

### CSS Classes
There are cases when we want to accept `class` as a prop in our `shadcn/vue` component and then combine it with a default tailwind class on our `Reka UI` component via `cn` utility function.

In these cases, we can not use `v-bind`, because this would lead in [double class binding](https://github.com/unovue/shadcn-vue/pull/241).

Take a look at `DrawerDescription.vue`.

```vue
<script lang="ts" setup>
import type { DrawerDescriptionProps } from 'vaul-vue'
import { cn } from '@/lib/utils'
import { DrawerDescription } from 'vaul-vue'
import { computed, type HtmlHTMLAttributes } from 'vue'

const props = defineProps<DrawerDescriptionProps & { class?: HtmlHTMLAttributes['class'] }>()

const delegatedProps = computed(() => {
  const { class: _, ...delegated } = props

  return delegated
})
</script>

<template>
  <DrawerDescription v-bind="delegatedProps" :class="cn('text-sm text-muted-foreground', props.class)">
    <slot />
  </DrawerDescription>
</template>
```

As you can see, we have created a computed property named `delegatedProps` to remove `class` from props, and only then bind
the returned value to our radix component (`DrawerDescription` in this case).

As for our class, we first declared it as type of `HtmlHTMLAttributes['class']` and used `cn` to merge tailwind classes from `class` prop and our own classes.

This pattern only needs to be applied when the `cn` utility is required. For instances where there are no default Tailwind classes that need to be merged with user-provided classes, this pattern is not necessary. A good example of this is the `SelectValue.vue` component.

```vue
<script setup lang="ts">
import { SelectValue, type SelectValueProps } from 'reka-ui'

const props = defineProps<SelectValueProps>()
</script>

<template>
  <SelectValue v-bind="props">
    <slot />
  </SelectValue>
</template>
```

### Boolean Props
When you are building a wrapper for a component, in some cases you want to ignore Vue [Props Boolean Casting](https://vuejs.org/guide/components/props.html#boolean-casting).
You can either set default value as undefined for all the boolean field, or you can use [`useForwardProps`](https://www.reka-ui.com/docs/utilities/use-forward-props.html) composable.

Take a look at `AccordionItem.vue`

```vue
<script setup lang="ts">
import { cn } from '@/lib/utils'
import { AccordionItem, type AccordionItemProps, useForwardProps } from 'reka-ui'
import { computed, type HTMLAttributes } from 'vue'

const props = defineProps<AccordionItemProps & { class?: HTMLAttributes['class'] }>()

const delegatedProps = computed(() => {
  const { class: _, ...delegated } = props

  return delegated
})

const forwardedProps = useForwardProps(delegatedProps)
</script>

<template>
  <AccordionItem
    v-bind="forwardedProps"
    :class="cn('border-b', props.class)"
  >
    <slot />
  </AccordionItem>
</template>
```

Since `AccordionItemProps` type has atleast one boolean property, we need to use `useForwardProps` on the entire props object.

Note that `useForwardPropsEmits` use `useForwardProps` under the hood.

### Component as Root
Whenever your root component is a `Component` Primitive from vue, it's easier to use [`Primitive`](https://www.reka-ui.com/docs/utilities/primitive.html) instead.

Let's take a look at `Button.vue`

```vue
<script setup lang="ts">
import type { HTMLAttributes } from 'vue'
import { cn } from '@/lib/utils'
import { Primitive, type PrimitiveProps } from 'reka-ui'
import { type ButtonVariants, buttonVariants } from '.'

interface Props extends PrimitiveProps {
  variant?: ButtonVariants['variant']
  size?: ButtonVariants['size']
  class?: HTMLAttributes['class']
}

const props = withDefaults(defineProps<Props>(), {
  as: 'button',
})
</script>

<template>
  <Primitive
    :as="as"
    :as-child="asChild"
    :class="cn(buttonVariants({ variant, size }), props.class)"
  >
    <slot />
  </Primitive>
</template>
```

You'll need to extend `PrimitiveProps` in your props to support `Primitive` component. In most cases you would also need a default value for [`as`](https://www.reka-ui.com/docs/utilities/primitive.html#changing-as-value) property.

## Updating with `shadcn/ui`

`shadcn/vue` is an unofficial, community-led Vue port of `shadcn/ui`, as time goes by, they might get out of sync.

As of today, we are in sync with this <a :href="latestSyncCommitUrl" target="_blank">commit</a> of `shadcn/ui`.

Click on the following link to check if there are newer commits that we should be synced with.

<div class="text-center">
  <a :href="diffUrl" target="_blank">
    <Button>
      Check Diff
    </Button>
  </a>
</div>

1. There are no changes - If you see "There isn’t anything to compare", nothing needs to be done as we are synced with latest version.
2. If there are changes, you should review thoese changes and try to apply them on `shadcn/vue` codebase and create a PR, remember to update the `latestSyncCommitTag` in [this file](https://github.com/unovue/shadcn-vue/blob/dev/apps/www/src/content/docs/contribution.md) too.

## Debugging
Here are some tools and techniques that can help you debug more effectively while contributing to `shadcn/vue` or developing your own projects.

### Install Vue Dev Tools
To easily inspect component props, attributes, events, and more, you can leverage the  [`Vue DevTools`](https://devtools.vuejs.org/)  extension for browsers. This extension provides a user-friendly interface for debugging Vue components and can improve your development experience.

### Enable Custom Formmaters
Vue wraps values stored in a `ref` in a way that, when logged, results in a nested object and requires manual inspection to access the value stored in the ref.

You can enable Custom Formatters in your browser to automate this process.

- [Firefox](https://firefox-source-docs.mozilla.org/devtools-user/custom_formatters/index.html)
- Chrome, Edge, Brave and other Chromium based [browsers](https://www.google.com/search?q=how+to+enable+custom++formatter+chrome)
