[ISSUE-5815] Add font size extension

.changeset/red-rivers-exist.md

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+---
+"@tiptap/extension-font-size": patch
+---
+
+This adds the new @tiptap/extension-font-size extension for changing the font-size of text based on the textStyle extension

.vscode/settings.json

@@ -22,6 +22,7 @@
     "extension/floating-menu",
     "extension/focus",
     "extension/font-family",
+    "extension/font-size",
     "extension/gapcursor",
     "extension/hard-break",
     "extension/heading",

demos/src/Extensions/FontSize/React/index.jsx

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+import FontSize from '@tiptap/extension-font-size'
+import TextStyle from '@tiptap/extension-text-style'
+import { EditorContent, useEditor } from '@tiptap/react'
+import StarterKit from '@tiptap/starter-kit'
+
+export default () => {
+  const editor = useEditor({
+    shouldRerenderOnTransaction: true,
+    extensions: [StarterKit, TextStyle, FontSize],
+    content: `
+        <p>Adjusting font sizes can greatly affect the readability of your text, making it easier for users to engage with your content.</p>
+        <p>When designing a website, it's crucial to balance large headings and smaller body text for a clean, organized layout.</p>
+        <p>When setting font sizes, it's important to consider accessibility, ensuring that text is readable for users with different visual impairments.</p>
+        <p><span style="font-size: 10px">Too small</span> a font size can strain the eyes, while <span style="font-size: 40px">too large</span> can disrupt the flow of the design.</p>
+        <p>When designing for mobile, font sizes should be adjusted to maintain readability on smaller screens.</p>
+      `,
+  })
+
+  if (!editor) {
+    return null
+  }
+
+  return <>
+    <div className="control-group">
+      <div className="button-group">
+        <button
+          onClick={() => editor.chain().focus().setFontSize('28px').run()}
+          className={editor.isActive('textStyle', { fontSize: '28px' }) ? 'is-active' : ''}
+          data-test-id="28px"
+        >
+          Font size 28px
+        </button>
+        <button
+          onClick={() => editor.chain().focus().setFontSize('32px').run()}
+          className={editor.isActive('textStyle', { fontSize: '32px' }) ? 'is-active' : ''}
+          data-test-id="32px"
+        >
+          Font size 32px
+        </button>
+        <button
+          onClick={() => editor.chain().focus().unsetFontSize().run()}
+          data-test-id="unsetFontSize"
+        >
+          Unset font size
+        </button>
+      </div>
+    </div>
+
+    <EditorContent editor={editor} />
+  </>
+}

demos/src/Extensions/FontSize/React/index.spec.js

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+context('/src/Extensions/FontSize/React/', () => {
+  before(() => {
+    cy.visit('/src/Extensions/FontSize/React/')
+  })
+
+  beforeEach(() => {
+    cy.get('.tiptap').then(([{ editor }]) => {
+      editor.commands.setContent('<p>Example Text</p>')
+    })
+    cy.get('.tiptap').type('{selectall}')
+  })
+
+  it('should set the font-size of the selected text', () => {
+    cy.get('[data-test-id="28px"]')
+      .should('not.have.class', 'is-active')
+      .click()
+      .should('have.class', 'is-active')
+
+    cy.get('.tiptap').find('span').should('have.attr', 'style', 'font-size: 28px')
+  })
+
+  it('should remove the font-size of the selected text', () => {
+    cy.get('[data-test-id="28px"]').click()
+    cy.get('.tiptap').find('span').should('have.attr', 'style', 'font-size: 28px')
+    cy.get('[data-test-id="unsetFontSize"]').click()
+    cy.get('.tiptap').get('span').should('not.exist')
+  })
+})

demos/src/Extensions/FontSize/Vue/index.spec.js

@@ -0,0 +1,28 @@
+context('/src/Extensions/FontSize/Vue/', () => {
+  before(() => {
+    cy.visit('/src/Extensions/FontSize/Vue/')
+  })
+
+  beforeEach(() => {
+    cy.get('.tiptap').then(([{ editor }]) => {
+      editor.commands.setContent('<p>Example Text</p>')
+    })
+    cy.get('.tiptap').type('{selectall}')
+  })
+
+  it('should set the font-size of the selected text', () => {
+    cy.get('[data-test-id="28px"]')
+      .should('not.have.class', 'is-active')
+      .click()
+      .should('have.class', 'is-active')
+
+    cy.get('.tiptap').find('span').should('have.attr', 'style', 'font-size: 28px')
+  })
+
+  it('should remove the font-size of the selected text', () => {
+    cy.get('[data-test-id="28px"]').click()
+    cy.get('.tiptap').find('span').should('have.attr', 'style', 'font-size: 28px')
+    cy.get('[data-test-id="unsetFontSize"]').click()
+    cy.get('.tiptap').get('span').should('not.exist')
+  })
+})

demos/src/Extensions/FontSize/Vue/index.vue

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+<template>
+  <div v-if="editor" class="container">
+    <div class="control-group">
+      <div class="button-group">
+        <button @click="editor.chain().focus().setFontSize('28px').run()" :class="{ 'is-active': editor.isActive('textStyle', { fontSize: '28px' }) }" data-test-id="28px">
+          Font size 28px
+        </button>
+        <button @click="editor.chain().focus().setFontSize('32px').run()" :class="{ 'is-active': editor.isActive('textStyle', { fontSize: '32px' }) }" data-test-id="32px">
+          Font size 32px
+        </button>
+        <button @click="editor.chain().focus().unsetFontSize().run()" data-test-id="unsetFontSize">
+          Unset font size
+        </button>
+      </div>
+    </div>
+    <editor-content :editor="editor" />
+  </div>
+</template>
+
+<script>
+import FontSize from '@tiptap/extension-font-size'
+import TextStyle from '@tiptap/extension-text-style'
+import StarterKit from '@tiptap/starter-kit'
+import { Editor, EditorContent } from '@tiptap/vue-3'
+
+export default {
+  components: {
+    EditorContent,
+  },
+
+  data() {
+    return {
+      editor: null,
+    }
+  },
+
+  mounted() {
+    this.editor = new Editor({
+      extensions: [
+        StarterKit,
+        TextStyle,
+        FontSize,
+      ],
+      content: `
+          <p>Adjusting font sizes can greatly affect the readability of your text, making it easier for users to engage with your content.</p>
+          <p>When designing a website, it's crucial to balance large headings and smaller body text for a clean, organized layout.</p>
+          <p>When setting font sizes, it's important to consider accessibility, ensuring that text is readable for users with different visual impairments.</p>
+          <p><span style="font-size: 10px">Too small</span> a font size can strain the eyes, while <span style="font-size: 40px">too large</span> can disrupt the flow of the design.</p>
+          <p>When designing for mobile, font sizes should be adjusted to maintain readability on smaller screens.</p>
+        `,
+    })
+  },
+
+  beforeUnmount() {
+    this.editor.destroy()
+  },
+}
+</script>

packages/extension-font-size/CHANGELOG.md

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+# Change Log
+
+## 2.10.2

packages/extension-font-size/README.md

@@ -0,0 +1,14 @@
+# @tiptap/extension-font-size
+[![Version](https://img.shields.io/npm/v/@tiptap/extension-font-size.svg?label=version)](https://www.npmjs.com/package/@tiptap/extension-font-size)
+[![Downloads](https://img.shields.io/npm/dm/@tiptap/extension-font-size.svg)](https://npmcharts.com/compare/tiptap?minimal=true)
+[![License](https://img.shields.io/npm/l/@tiptap/extension-font-size.svg)](https://www.npmjs.com/package/@tiptap/extension-font-size)
+[![Sponsor](https://img.shields.io/static/v1?label=Sponsor&message=%E2%9D%A4&logo=GitHub)](https://github.com/sponsors/ueberdosis)
+
+## Introduction
+Tiptap is a headless wrapper around [ProseMirror](https://ProseMirror.net) – a toolkit for building rich text WYSIWYG editors, which is already in use at many well-known companies such as *New York Times*, *The Guardian* or *Atlassian*.
+
+## Official Documentation
+Documentation can be found on the [Tiptap website](https://tiptap.dev).
+
+## License
+Tiptap is open sourced software licensed under the [MIT license](https://github.com/ueberdosis/tiptap/blob/main/LICENSE.md).

packages/extension-font-size/package.json

@@ -0,0 +1,46 @@
+{
+  "name": "@tiptap/extension-font-size",
+  "description": "font size extension for tiptap",
+  "version": "3.0.0-next.3",
+  "homepage": "https://tiptap.dev",
+  "keywords": [
+    "tiptap",
+    "tiptap extension"
+  ],
+  "license": "MIT",
+  "funding": {
+    "type": "github",
+    "url": "https://github.com/sponsors/ueberdosis"
+  },
+  "type": "module",
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "import": "./dist/index.js",
+      "require": "./dist/index.cjs"
+    }
+  },
+  "main": "dist/index.cjs",
+  "module": "dist/index.js",
+  "types": "dist/index.d.ts",
+  "files": [
+    "src",
+    "dist"
+  ],
+  "devDependencies": {
+    "@tiptap/core": "^3.0.0-next.3",
+    "@tiptap/extension-text-style": "^3.0.0-next.3"
+  },
+  "peerDependencies": {
+    "@tiptap/core": "^3.0.0-next.3",
+    "@tiptap/extension-text-style": "^3.0.0-next.3"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/ueberdosis/tiptap",
+    "directory": "packages/extension-font-size"
+  },
+  "scripts": {
+    "build": "tsup"
+  }
+}

packages/extension-font-size/src/font-size.ts

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+import '@tiptap/extension-text-style'
+
+import { Extension } from '@tiptap/core'
+
+export type FontSizeOptions = {
+  /**
+   * A list of node names where the font size can be applied.
+   * @default ['textStyle']
+   * @example ['heading', 'paragraph']
+   */
+  types: string[];
+};
+
+declare module '@tiptap/core' {
+  interface Commands<ReturnType> {
+    fontSize: {
+      /**
+       * Set the font size
+       * @param fontSize The font size
+       * @example editor.commands.setFontSize('Arial')
+       */
+      setFontSize: (fontSize: string) => ReturnType;
+      /**
+       * Unset the font size
+       * @example editor.commands.unsetFontSize()
+       */
+      unsetFontSize: () => ReturnType;
+    };
+  }
+}
+
+/**
+ * This extension allows you to set a font size for text.
+ * @see https://www.tiptap.dev/api/extensions/font-size
+ */
+export const FontSize = Extension.create<FontSizeOptions>({
+  name: 'fontSize',
+
+  addOptions() {
+    return {
+      types: ['textStyle'],
+    }
+  },
+
+  addGlobalAttributes() {
+    return [
+      {
+        types: this.options.types,
+        attributes: {
+          fontSize: {
+            default: null,
+            parseHTML: element => element.style.fontSize,
+            renderHTML: attributes => {
+              if (!attributes.fontSize) {
+                return {}
+              }
+
+              return {
+                style: `font-size: ${attributes.fontSize}`,
+              }
+            },
+          },
+        },
+      },
+    ]
+  },
+
+  addCommands() {
+    return {
+      setFontSize:
+        fontSize => ({ chain }) => {
+          return chain().setMark('textStyle', { fontSize }).run()
+        },
+      unsetFontSize:
+        () => ({ chain }) => {
+          return chain().setMark('textStyle', { fontSize: null }).removeEmptyTextStyle().run()
+        },
+    }
+  },
+})

packages/extension-font-size/src/index.ts

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+import { FontSize } from './font-size.js'
+
+export * from './font-size.js'
+
+export default FontSize

packages/extension-font-size/tsup.config.ts

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+import { defineConfig } from 'tsup'
+
+export default defineConfig({
+  entry: ['src/index.ts'],
+  tsconfig: '../../tsconfig.build.json',
+  outDir: 'dist',
+  dts: true,
+  clean: true,
+  sourcemap: true,
+  format: [
+    'esm',
+    'cjs',
+  ],
+})