Example: slash-menu

import 'prosekit/basic/style.css'
import 'prosekit/basic/typography.css'

import { createEditor } from 'prosekit/core'
import { ProseKit } from 'prosekit/react'
import { useMemo } from 'react'

import { defineExtension } from './extension'
import SlashMenu from './slash-menu'

export default function Editor() {
  const editor = useMemo(() => {
    return createEditor({ extension: defineExtension() })
  }, [])

  return (
    <ProseKit editor={editor}>
      <div className='box-border h-full w-full min-h-36 overflow-y-hidden overflow-x-hidden rounded-md border border-solid border-gray-200 shadow dark:border-zinc-700 flex flex-col bg-white dark:bg-gray-950'>
        <div className='relative w-full flex-1 box-border overflow-y-scroll'>
          <div ref={editor.mount} className='ProseMirror box-border min-h-full px-[max(4rem,_calc(50%-20rem))] py-8 outline-none outline-0 [&_span[data-mention="user"]]:text-blue-500 [&_span[data-mention="tag"]]:text-violet-500'></div>
          <SlashMenu />
        </div>
      </div>
    </ProseKit>
  )
}

import { defineBasicExtension } from 'prosekit/basic'
import { union } from 'prosekit/core'
import { definePlaceholder } from 'prosekit/extensions/placeholder'

export function defineExtension() {
  return union(
    defineBasicExtension(),
    definePlaceholder({ placeholder: 'Press / for commands...' }),
  )
}

export type EditorExtension = ReturnType<typeof defineExtension>

import { AutocompleteEmpty } from 'prosekit/react/autocomplete'

export default function SlashMenuEmpty() {
  return (
    <AutocompleteEmpty className='relative flex items-center justify-between min-w-[8rem] scroll-my-1 rounded px-3 py-1.5 box-border cursor-default select-none whitespace-nowrap outline-none data-[focused]:bg-gray-100 dark:data-[focused]:bg-gray-800'>
      <span>No results</span>
    </AutocompleteEmpty>
  )
}

import { AutocompleteItem } from 'prosekit/react/autocomplete'

export default function SlashMenuItem(props: {
  label: string
  kbd?: string
  onSelect: () => void
}) {
  return (
    <AutocompleteItem onSelect={props.onSelect} className='relative flex items-center justify-between min-w-[8rem] scroll-my-1 rounded px-3 py-1.5 box-border cursor-default select-none whitespace-nowrap outline-none data-[focused]:bg-gray-100 dark:data-[focused]:bg-gray-800'>
      <span>{props.label}</span>
      {props.kbd && <kbd className='text-xs font-mono text-gray-400 dark:text-gray-500'>{props.kbd}</kbd>}
    </AutocompleteItem>
  )
}

import { useEditor } from 'prosekit/react'
import {
  AutocompleteList,
  AutocompletePopover,
} from 'prosekit/react/autocomplete'

import type { EditorExtension } from './extension'
import SlashMenuEmpty from './slash-menu-empty'
import SlashMenuItem from './slash-menu-item'

export default function SlashMenu() {
  const editor = useEditor<EditorExtension>()

  return (
    <AutocompletePopover regex={/\/.*$/iu} className='relative block max-h-[25rem] min-w-[15rem] select-none overflow-auto whitespace-nowrap p-1 z-10 box-border rounded-lg border border-gray-200 dark:border-gray-800 bg-white dark:bg-gray-950 shadow-lg [&:not([data-state])]:hidden'>
      <AutocompleteList>
        <SlashMenuItem
          label="Text"
          onSelect={() => editor.commands.setParagraph()}
        />

        <SlashMenuItem
          label="Heading 1"
          kbd="#"
          onSelect={() => editor.commands.setHeading({ level: 1 })}
        />

        <SlashMenuItem
          label="Heading 2"
          kbd="##"
          onSelect={() => editor.commands.setHeading({ level: 2 })}
        />

        <SlashMenuItem
          label="Heading 3"
          kbd="###"
          onSelect={() => editor.commands.setHeading({ level: 3 })}
        />

        <SlashMenuItem
          label="Bullet list"
          kbd="-"
          onSelect={() => editor.commands.wrapInList({ kind: 'bullet' })}
        />

        <SlashMenuItem
          label="Ordered list"
          kbd="1."
          onSelect={() => editor.commands.wrapInList({ kind: 'ordered' })}
        />

        <SlashMenuItem
          label="Task list"
          kbd="[]"
          onSelect={() => editor.commands.wrapInList({ kind: 'task' })}
        />

        <SlashMenuItem
          label="Toggle list"
          kbd=">>"
          onSelect={() => editor.commands.wrapInList({ kind: 'toggle' })}
        />

        <SlashMenuItem
          label="Quote"
          kbd=">"
          onSelect={() => editor.commands.setBlockquote()}
        />

        <SlashMenuItem
          label="Table"
          onSelect={() => editor.commands.insertTable({ row: 3, col: 3 })}
        />

        <SlashMenuItem
          label="Divider"
          kbd="---"
          onSelect={() => editor.commands.insertHorizontalRule()}
        />

        <SlashMenuItem
          label="Code"
          kbd="```"
          onSelect={() => editor.commands.setCodeBlock()}
        />

        <SlashMenuEmpty />
      </AutocompleteList>
    </AutocompletePopover>
  )
}