Example: word-counter

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 WordCounter from './word-counter'

export default function Editor() {
  const editor = useMemo(() => {
    const extension = defineExtension()
    return createEditor({
      extension,
      defaultContent: 'Start typing and observe the word count update below.',
    })
  }, [])

  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 dark:border-gray-700 shadow flex flex-col bg-white dark:bg-gray-950 color-black dark:color-white'>
        <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>
          <WordCounter />
        </div>
      </div>
    </ProseKit>
  )
}

import { defineBasicExtension } from 'prosekit/basic'
import { union } from 'prosekit/core'

export function defineExtension() {
  return union(defineBasicExtension())
}

export type EditorExtension = ReturnType<typeof defineExtension>

import { useEditor } from 'prosekit/react'

export default function WordCounter() {
  const editor = useEditor({ update: true })

  const doc = editor.state.doc
  const words = doc ? doc.textBetween(0, doc.content.size, ' ') : ''
  const wordCount = words.split(/\s+/).filter((s) => s).length
  const characterCount = doc ? doc.textContent.length : 0

  return (
    <div className="p-4 text-center italic tabular-nums">
      Word Count: {wordCount}
      <br />
      Character Count: {characterCount}
    </div>
  )
}

<script lang="ts">
import 'prosekit/basic/style.css'
import 'prosekit/basic/typography.css'

import { createEditor } from 'prosekit/core'
import { ProseKit } from 'prosekit/svelte'
import { defineExtension } from './extension'
import WordCounter from './word-counter.svelte'

const editor = createEditor({
  extension: defineExtension(),
  defaultContent: 'Start typing and observe the word count update below.',
})

const mount = (element: HTMLElement) => {
  editor.mount(element)
  return { destroy: () => editor.unmount() }
}
</script>

<ProseKit {editor}>
  <div class='box-border h-full w-full min-h-36 overflow-y-hidden overflow-x-hidden rounded-md border border-solid border-gray-200 dark:border-gray-700 shadow flex flex-col bg-white dark:bg-gray-950 color-black dark:color-white'>
    <div class='relative w-full flex-1 box-border overflow-y-scroll'>
      <div use:mount class='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>
      <WordCounter />
    </div>
  </div>
</ProseKit>

import { defineBasicExtension } from 'prosekit/basic'

export function defineExtension() {
  return defineBasicExtension()
}

export type EditorExtension = ReturnType<typeof defineExtension>

<script lang="ts">
import { useEditor } from 'prosekit/svelte'
import { derived } from 'svelte/store'
import type { EditorExtension } from './extension'

const editor = useEditor<EditorExtension>({ update: true })

const wordCount = derived(editor, ($editor) => {
  const doc = $editor.state.doc
  const words = doc ? doc.textBetween(0, doc.content.size, ' ') : ''
  return words.split(/\s+/).filter((s) => s).length
})

const characterCount = derived(editor, ($editor) => {
  const doc = $editor.state.doc
  return doc ? doc.textContent.length : 0
})
</script>

<div class="p-4 text-center italic tabular-nums">
  Word Count: {$wordCount}
  <br />
  Character Count: {$characterCount}
</div>

<script setup lang="ts">
import 'prosekit/basic/style.css'
import 'prosekit/basic/typography.css'

import { createEditor } from 'prosekit/core'
import { ProseKit } from 'prosekit/vue'
import {
  ref,
  watchPostEffect,
} from 'vue'

import { defineExtension } from './extension'
import WordCounter from './word-counter.vue'

const editor = createEditor({
  extension: defineExtension(),
  defaultContent: 'Start typing and observe the word count update below.',
})
const editorRef = ref<HTMLDivElement | null>(null)
watchPostEffect((onCleanup) => {
  editor.mount(editorRef.value)
  onCleanup(() => editor.unmount())
})
</script>

<template>
  <ProseKit :editor="editor">
    <div class='box-border h-full w-full min-h-36 overflow-y-hidden overflow-x-hidden rounded-md border border-solid border-gray-200 dark:border-gray-700 shadow flex flex-col bg-white dark:bg-gray-950 color-black dark:color-white'>
      <div class='relative w-full flex-1 box-border overflow-y-scroll'>
        <div ref="editorRef" class='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' />
        <WordCounter />
      </div>
    </div>
  </ProseKit>
</template>

import { defineBasicExtension } from 'prosekit/basic'
import { union } from 'prosekit/core'

export function defineExtension() {
  return union(defineBasicExtension())
}

export type EditorExtension = ReturnType<typeof defineExtension>

<script setup lang="ts">
import { useEditor } from 'prosekit/vue'
import { computed } from 'vue'

import type { EditorExtension } from './extension'

const editor = useEditor<EditorExtension>({ update: true })

const wordCount = computed(() => {
  const doc = editor.value.state.doc
  const words = doc ? doc.textBetween(0, doc.content.size, ' ') : ''
  return words.split(/\s+/).filter((s) => s).length
})

const characterCount = computed(() => {
  const doc = editor.value.state.doc
  return doc ? doc.textContent.length : 0
})
</script>

<template>
  <div class="p-4 text-center italic tabular-nums">
    Word Count: {{ wordCount }}
    <br />
    Character Count: {{ characterCount }}
  </div>
</template>