From 4c2635670b82565a541fddd51f1c7c190efbf94a Mon Sep 17 00:00:00 2001
From: Simon Backx <simon@ghost.org>
Date: Tue, 23 May 2023 14:58:33 +0200
Subject: [PATCH] Added signup-form package (#16846)

fixes https://github.com/TryGhost/Team/issues/3275
fixes https://github.com/TryGhost/Team/issues/3279
fixes https://github.com/TryGhost/Team/issues/3278

This pull request adds a new signup form package to the Ghost core
repository. The signup form package is a React component, embeddable on
any site, that renders a form for users to subscribe to a Ghost site.
---
 .gitignore                                    |   4 +
 ghost/core/core/shared/config/defaults.json   |   4 +
 ghost/signup-form/.env.development            |   2 +
 ghost/signup-form/.eslintrc.cjs               |  42 ++++
 ghost/signup-form/.storybook/main.tsx         |  27 +++
 ghost/signup-form/.storybook/preview.tsx      |  31 +++
 ghost/signup-form/.yarnrc                     |   2 +
 ghost/signup-form/README.md                   |  28 +++
 ghost/signup-form/demo/demo.tsx               |  10 +
 ghost/signup-form/index.html                  |  64 ++++++
 ghost/signup-form/package.json                |  85 ++++++++
 ghost/signup-form/postcss.config.cjs          |   8 +
 ghost/signup-form/src/App.tsx                 |  52 +++++
 ghost/signup-form/src/AppContext.ts           |  22 ++
 .../signup-form/src/components/ContentBox.tsx |  20 ++
 ghost/signup-form/src/components/Frame.tsx    |  70 +++++++
 ghost/signup-form/src/components/IFrame.tsx   |  68 ++++++
 .../src/components/pages/FormPage.tsx         |  70 +++++++
 .../src/components/pages/SuccessPage.tsx      |  21 ++
 ghost/signup-form/src/index.tsx               |  64 ++++++
 ghost/signup-form/src/pages.tsx               |  24 +++
 ghost/signup-form/src/styles/demo.css         |  32 +++
 ghost/signup-form/src/styles/iframe.css       |   8 +
 ghost/signup-form/src/utils/api.tsx           |  41 ++++
 ghost/signup-form/src/utils/constants.tsx     |   1 +
 ghost/signup-form/src/utils/helpers.tsx       |   5 +
 ghost/signup-form/src/utils/validator.tsx     |   4 +
 ghost/signup-form/src/vite-env.d.ts           |   1 +
 ghost/signup-form/tailwind.config.cjs         | 194 ++++++++++++++++++
 ghost/signup-form/test/hello.test.js          |   8 +
 ghost/signup-form/tsconfig.json               |  24 +++
 ghost/signup-form/tsconfig.node.json          |  10 +
 ghost/signup-form/vite.config.ts              |  60 ++++++
 33 files changed, 1106 insertions(+)
 create mode 100644 ghost/signup-form/.env.development
 create mode 100644 ghost/signup-form/.eslintrc.cjs
 create mode 100644 ghost/signup-form/.storybook/main.tsx
 create mode 100644 ghost/signup-form/.storybook/preview.tsx
 create mode 100644 ghost/signup-form/.yarnrc
 create mode 100644 ghost/signup-form/README.md
 create mode 100644 ghost/signup-form/demo/demo.tsx
 create mode 100644 ghost/signup-form/index.html
 create mode 100644 ghost/signup-form/package.json
 create mode 100644 ghost/signup-form/postcss.config.cjs
 create mode 100644 ghost/signup-form/src/App.tsx
 create mode 100644 ghost/signup-form/src/AppContext.ts
 create mode 100644 ghost/signup-form/src/components/ContentBox.tsx
 create mode 100644 ghost/signup-form/src/components/Frame.tsx
 create mode 100644 ghost/signup-form/src/components/IFrame.tsx
 create mode 100644 ghost/signup-form/src/components/pages/FormPage.tsx
 create mode 100644 ghost/signup-form/src/components/pages/SuccessPage.tsx
 create mode 100644 ghost/signup-form/src/index.tsx
 create mode 100644 ghost/signup-form/src/pages.tsx
 create mode 100644 ghost/signup-form/src/styles/demo.css
 create mode 100644 ghost/signup-form/src/styles/iframe.css
 create mode 100644 ghost/signup-form/src/utils/api.tsx
 create mode 100644 ghost/signup-form/src/utils/constants.tsx
 create mode 100644 ghost/signup-form/src/utils/helpers.tsx
 create mode 100644 ghost/signup-form/src/utils/validator.tsx
 create mode 100644 ghost/signup-form/src/vite-env.d.ts
 create mode 100644 ghost/signup-form/tailwind.config.cjs
 create mode 100644 ghost/signup-form/test/hello.test.js
 create mode 100644 ghost/signup-form/tsconfig.json
 create mode 100644 ghost/signup-form/tsconfig.node.json
 create mode 100644 ghost/signup-form/vite.config.ts

diff --git a/.gitignore b/.gitignore
index ea67295014..4887893825 100644
--- a/.gitignore
+++ b/.gitignore
@@ -130,6 +130,10 @@ Caddyfile
 /ghost/sodo-search/public/main.css
 /ghost/sodo-search/umd
 
+# Signup Form and local environments
+/ghost/signup-form/umd
+/ghost/signup-form/.env*.local
+
 # Announcement-Bar
 /ghost/announcement-bar/umd
 
diff --git a/ghost/core/core/shared/config/defaults.json b/ghost/core/core/shared/config/defaults.json
index 76d7cd139e..510b2311b5 100644
--- a/ghost/core/core/shared/config/defaults.json
+++ b/ghost/core/core/shared/config/defaults.json
@@ -200,6 +200,10 @@
         "url": "https://cdn.jsdelivr.net/ghost/admin-x-settings@~{version}/dist/admin-x-settings.umd.js",
         "version": "0.0"
     },
+    "signupForm": {
+        "url": "https://cdn.jsdelivr.net/ghost/signup-form@~{version}/umd/signup-form.min.js",
+        "version": "0.0"
+    },
     "tenor": {
         "googleApiKey": null,
         "contentFilter": "off"
diff --git a/ghost/signup-form/.env.development b/ghost/signup-form/.env.development
new file mode 100644
index 0000000000..78483124be
--- /dev/null
+++ b/ghost/signup-form/.env.development
@@ -0,0 +1,2 @@
+# Override this in .env.development.local if needed
+VITE_SITE_URL=https://127.0.0.1:2368
diff --git a/ghost/signup-form/.eslintrc.cjs b/ghost/signup-form/.eslintrc.cjs
new file mode 100644
index 0000000000..5e6629063e
--- /dev/null
+++ b/ghost/signup-form/.eslintrc.cjs
@@ -0,0 +1,42 @@
+/* eslint-env node */
+module.exports = {
+    root: true,
+    extends: [
+        'react-app',
+        'plugin:ghost/browser',
+        'plugin:react/recommended'
+    ],
+    plugins: [
+        'ghost',
+        'tailwindcss'
+    ],
+    rules: {
+        // sort multiple import lines into alphabetical groups
+        'ghost/sort-imports-es6-autofix/sort-imports-es6': ['error', {
+            memberSyntaxSortOrder: ['none', 'all', 'single', 'multiple']
+        }],
+
+        // suppress errors for missing 'import React' in JSX files, as we don't need it
+        'react/react-in-jsx-scope': 'off',
+        // ignore prop-types for now
+        'react/prop-types': 'off',
+
+        // custom react rules
+        'react/jsx-sort-props': ['error', {
+            reservedFirst: true,
+            callbacksLast: true,
+            shorthandLast: true,
+            locale: 'en'
+        }],
+        'react/button-has-type': 'error',
+        'react/no-array-index-key': 'error',
+
+        'tailwindcss/classnames-order': ['error', {config: 'tailwind.config.cjs'}],
+        'tailwindcss/enforces-negative-arbitrary-values': ['warn', {config: 'tailwind.config.cjs'}],
+        'tailwindcss/enforces-shorthand': ['warn', {config: 'tailwind.config.cjs'}],
+        'tailwindcss/migration-from-tailwind-2': ['warn', {config: 'tailwind.config.cjs'}],
+        'tailwindcss/no-arbitrary-value': 'off',
+        'tailwindcss/no-custom-classname': 'off',
+        'tailwindcss/no-contradicting-classname': ['error', {config: 'tailwind.config.cjs'}]
+    }
+};
diff --git a/ghost/signup-form/.storybook/main.tsx b/ghost/signup-form/.storybook/main.tsx
new file mode 100644
index 0000000000..23facc7c95
--- /dev/null
+++ b/ghost/signup-form/.storybook/main.tsx
@@ -0,0 +1,27 @@
+import type { StorybookConfig } from "@storybook/react-vite";
+const config: StorybookConfig = {
+	stories: ["../src/**/*.mdx", "../src/**/*.stories.@(js|jsx|ts|tsx)"],
+	addons: [
+		"@storybook/addon-links",
+		"@storybook/addon-essentials",
+		"@storybook/addon-interactions",
+		{
+			name: '@storybook/addon-styling',
+		},
+	],
+	framework: {
+		name: "@storybook/react-vite",
+		options: {},
+	},
+	docs: {
+		autodocs: "tag",
+	},
+	// staticDirs: ['../public/fonts'],
+	async viteFinal(config, options) {
+		config.resolve.alias = {
+			crypto: require.resolve('rollup-plugin-node-builtins'),
+		}
+		return config;
+	},
+};
+export default config;
diff --git a/ghost/signup-form/.storybook/preview.tsx b/ghost/signup-form/.storybook/preview.tsx
new file mode 100644
index 0000000000..7540781ccd
--- /dev/null
+++ b/ghost/signup-form/.storybook/preview.tsx
@@ -0,0 +1,31 @@
+import React from 'react';
+
+import '../src/styles/demo.css';
+import type { Preview } from "@storybook/react";
+
+const preview: Preview = {
+	parameters: {
+		actions: { argTypesRegex: "^on[A-Z].*" },
+		controls: {
+			matchers: {
+				color: /(background|color)$/i,
+				date: /Date$/,
+			},
+		},
+		options: {
+			storySort: {
+				order: ['Global', 'Settings', 'Experimental'],
+			},
+		},
+	},
+	decorators: [
+		(Story) => (
+			<div className="signup-form" style={{ padding: '24px' }}>
+				{/* 👇 Decorators in Storybook also accept a function. Replace <Story/> with Story() to enable it  */}
+				<Story />
+			</div>
+		),
+	],
+};
+
+export default preview;
diff --git a/ghost/signup-form/.yarnrc b/ghost/signup-form/.yarnrc
new file mode 100644
index 0000000000..6380a3bd68
--- /dev/null
+++ b/ghost/signup-form/.yarnrc
@@ -0,0 +1,2 @@
+version-tag-prefix "@tryghost/signup-form@"
+version-git-message "Released Signup Form v%s"
diff --git a/ghost/signup-form/README.md b/ghost/signup-form/README.md
new file mode 100644
index 0000000000..3accb04260
--- /dev/null
+++ b/ghost/signup-form/README.md
@@ -0,0 +1,28 @@
+# Embeddable Signup Form
+
+Embed a Ghost signup form on any site.
+
+## Development
+
+### Pre-requisites
+
+- Run `yarn` in Ghost monorepo root
+- Run `yarn` in this directory
+
+### Running the development version
+
+Run `yarn dev` to start the development server to test/develop the form standalone. This will generate a demo site from the `index.html` file which renders the app and makes it available on http://localhost:5137
+
+## Develop
+
+This is a monorepo package.
+
+Follow the instructions for the top-level repo.
+1. `git clone` this repo & `cd` into it as usual
+2. Run `yarn` to install top-level dependencies.
+
+
+## Test
+
+- `yarn lint` run just eslint
+- `yarn test` run lint and tests
diff --git a/ghost/signup-form/demo/demo.tsx b/ghost/signup-form/demo/demo.tsx
new file mode 100644
index 0000000000..5f48cff1ad
--- /dev/null
+++ b/ghost/signup-form/demo/demo.tsx
@@ -0,0 +1,10 @@
+console.log('Hello world!', import.meta);
+
+// The demo is loaded via ESM, but normally the script is loaded via a <script> tag, using a UMD bundle.
+// The script on itself expects document.currentScript to be set, but this is not the case when loaded via ESM.
+// So we map it manually here
+
+const scriptTag = document.querySelector('script');
+document.currentScript = scriptTag;
+
+import('../src/index.tsx');
diff --git a/ghost/signup-form/index.html b/ghost/signup-form/index.html
new file mode 100644
index 0000000000..db6d7045d7
--- /dev/null
+++ b/ghost/signup-form/index.html
@@ -0,0 +1,64 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Signup Form</title>
+    <link rel="stylesheet" href="/src/styles/demo.css" />
+  </head>
+  <body>
+    <div id="demo-container">
+        <h1>Full signup form</h1>
+        <p>
+            This is a live preview of the embeddable signup form<br>
+            It is currently connected to Ghost running at <code>%VITE_SITE_URL%</code>. Please duplicate <code>.env.development</code> as <code>.env.development.local</code> and modify it to change the site url locally (when you get an error when submitting the forms).
+        </p>
+
+        <!-- Because we need to use ESM modules during develoment, the src should be different to force reexecution of each script -->
+        <script
+            type="module"
+            src="/src/index.tsx"
+            data-title="My site name"
+            data-description="An independent publication about embeddable signup forms."
+            data-logo="https://user-images.githubusercontent.com/65487235/157884383-1b75feb1-45d8-4430-b636-3f7e06577347.png"
+            data-color="#4664dd"
+            data-site="%VITE_SITE_URL%"
+            data-labels="signup-form,with-logo"
+        ></script>
+
+        <hr>
+        <h1>Without logo</h1>
+        <script
+            type="module"
+            src="/src/index.tsx?withoutlogo"
+            data-title="Site without logo"
+            data-description="An independent publication about embeddable signup forms."
+            data-color="#4664dd"
+            data-site="%VITE_SITE_URL%"
+            data-labels="signup-form,without-logo"
+        ></script>
+
+        <hr>
+        <h1>Minimal</h1>
+
+        <script
+            type="module"
+            src="/src/index.tsx?other"
+            data-color="#ff0095"
+            data-site="%VITE_SITE_URL%"
+            data-labels="signup-form,minimal"
+        ></script>
+
+        <hr>
+        <h1>With invalid configuration</h1>
+        <p>When you submit this one, it will throw an error.</p>
+
+        <script
+            type="module"
+            src="/src/index.tsx?other2"
+            data-color="#ff0095"
+            data-site="https://invalid/"
+        ></script>
+    </div>
+  </body>
+</html>
diff --git a/ghost/signup-form/package.json b/ghost/signup-form/package.json
new file mode 100644
index 0000000000..2d4e35242d
--- /dev/null
+++ b/ghost/signup-form/package.json
@@ -0,0 +1,85 @@
+{
+    "name": "@tryghost/signup-form",
+    "version": "0.0.0",
+    "license": "MIT",
+    "repository": {
+      "type": "git",
+      "url": "https://github.com/TryGhost/Ghost/tree/main/packages/signup-form"
+    },
+    "author": "Ghost Foundation",
+    "type": "module",
+    "files": [
+      "LICENSE",
+      "README.md",
+      "dist/"
+    ],
+    "main": "./dist/signup-form.umd.cjs",
+    "module": "./dist/signup-form.js",
+    "exports": {
+      ".": {
+        "import": "./dist/signup-form.js",
+        "require": "./dist/signup-form.umd.cjs"
+      }
+    },
+    "publishConfig": {
+      "access": "public",
+      "registry": "https://registry.npmjs.org/"
+    },
+    "scripts": {
+      "dev": "vite",
+      "dev:preview": "concurrently \"vite preview\" \"vite build --watch\"",
+      "build": "tsc && vite build",
+      "lint": "yarn run lint:js",
+      "lint:js": "eslint --ext .js,.ts,.cjs,.tsx --cache src test",
+      "test:unit": "yarn build",
+      "preview": "vite preview",
+      "storybook": "storybook dev -p 6006",
+      "build-storybook": "storybook build",
+      "preship": "yarn lint",
+      "ship": "STATUS=$(git status --porcelain); echo $STATUS; if [ -z \"$STATUS\" ]; then yarn version; fi",
+      "postship": "git push ${GHOST_UPSTREAM:-origin} --follow-tags && npm publish",
+      "prepublishOnly": "yarn build"
+    },
+    "dependencies": {
+      "react": "^18.2.0",
+      "react-dom": "^18.2.0",
+      "@tryghost/timezone-data": "0.3.0"
+    },
+    "devDependencies": {
+      "@storybook/addon-essentials": "7.0.12",
+      "@storybook/addon-interactions": "7.0.12",
+      "@storybook/addon-links": "7.0.12",
+      "@storybook/addon-styling": "1.0.6",
+      "@storybook/blocks": "7.0.12",
+      "@storybook/react": "7.0.12",
+      "@storybook/react-vite": "7.0.12",
+      "@storybook/testing-library": "0.1.0",
+      "@tailwindcss/forms": "0.5.3",
+      "@tailwindcss/line-clamp": "0.4.4",
+      "@types/react": "18.0.28",
+      "@types/react-dom": "18.0.11",
+      "@typescript-eslint/eslint-plugin": "5.57.1",
+      "@typescript-eslint/parser": "5.57.1",
+      "@vitejs/plugin-react": "4.0.0",
+      "autoprefixer": "10.4.14",
+      "concurrently": "8.0.1",
+      "eslint": "8.38.0",
+      "eslint-config-react-app": "7.0.1",
+      "eslint-plugin-ghost": "2.18.0",
+      "eslint-plugin-react": "7.32.2",
+      "eslint-plugin-react-hooks": "4.6.0",
+      "eslint-plugin-react-refresh": "0.3.4",
+      "eslint-plugin-tailwindcss": "3.11.0",
+      "postcss": "8.4.23",
+      "postcss-import": "^15.1.0",
+      "prop-types": "15.8.1",
+      "rollup-plugin-node-builtins": "2.1.2",
+      "storybook": "7.0.12",
+      "stylelint": "15.6.1",
+      "tailwindcss": "3.3.2",
+      "typescript": "5.0.4",
+      "vite": "4.3.8",
+      "vite-plugin-svgr": "3.2.0",
+      "vitest": "0.31.1"
+    }
+  }
diff --git a/ghost/signup-form/postcss.config.cjs b/ghost/signup-form/postcss.config.cjs
new file mode 100644
index 0000000000..ab7c4939b1
--- /dev/null
+++ b/ghost/signup-form/postcss.config.cjs
@@ -0,0 +1,8 @@
+module.exports = {
+    plugins: {
+        'postcss-import': {},
+        'tailwindcss/nesting': {},
+        tailwindcss: {},
+        autoprefixer: {}
+    }
+};
diff --git a/ghost/signup-form/src/App.tsx b/ghost/signup-form/src/App.tsx
new file mode 100644
index 0000000000..36ccbc71cd
--- /dev/null
+++ b/ghost/signup-form/src/App.tsx
@@ -0,0 +1,52 @@
+import React, {ComponentProps} from 'react';
+import pages, {Page, PageName} from './pages';
+import {AppContext, SignupFormOptions} from './AppContext';
+import {ContentBox} from './components/ContentBox';
+import {Frame} from './components/Frame';
+import {setupGhostApi} from './utils/api';
+
+type Props = {
+    options: SignupFormOptions;
+};
+
+const App: React.FC<Props> = ({options}) => {
+    const [page, setPage] = React.useState<Page>({
+        name: 'FormPage',
+        data: {}
+    });
+
+    const api = React.useMemo(() => {
+        return setupGhostApi({siteUrl: options.site});
+    }, [options.site]);
+
+    const _setPage = <T extends PageName>(name: T, data: ComponentProps<typeof pages[T]>) => {
+        setPage({
+            name,
+            data
+        } as Page);
+    };
+
+    const context = {
+        page,
+        api,
+        options,
+        setPage: _setPage
+    };
+
+    const PageComponent = pages[page.name];
+    const data = page.data as any; // issue with TypeScript understanding the type here when passing it to the component
+
+    return (
+        <div>
+            <AppContext.Provider value={context}>
+                <Frame>
+                    <ContentBox>
+                        <PageComponent {...data} />
+                    </ContentBox>
+                </Frame>
+            </AppContext.Provider>
+        </div>
+    );
+};
+
+export default App;
diff --git a/ghost/signup-form/src/AppContext.ts b/ghost/signup-form/src/AppContext.ts
new file mode 100644
index 0000000000..88ee8dd6b8
--- /dev/null
+++ b/ghost/signup-form/src/AppContext.ts
@@ -0,0 +1,22 @@
+// Ref: https://reactjs.org/docs/context.html
+import React, {ComponentProps} from 'react';
+import pages, {Page, PageName} from './pages';
+import {GhostApi} from './utils/api';
+
+export type SignupFormOptions = {
+    title?: string,
+    description?: string,
+    logo?: string,
+    color?: string,
+    site: string,
+    labels: string[],
+};
+
+export type AppContextType = {
+    page: Page,
+    setPage: <T extends PageName>(name: T, data: ComponentProps<typeof pages[T]>) => void,
+    options: SignupFormOptions,
+    api: GhostApi,
+}
+
+export const AppContext = React.createContext<AppContextType>({} as any);
diff --git a/ghost/signup-form/src/components/ContentBox.tsx b/ghost/signup-form/src/components/ContentBox.tsx
new file mode 100644
index 0000000000..e148f3ce5f
--- /dev/null
+++ b/ghost/signup-form/src/components/ContentBox.tsx
@@ -0,0 +1,20 @@
+import React from 'react';
+import {AppContext} from '../AppContext';
+
+type Props = {
+    children: React.ReactNode
+};
+
+export const ContentBox: React.FC<Props> = ({children}) => {
+    const {color} = React.useContext(AppContext).options;
+
+    const style = {
+        '--gh-accent-color': color
+    } as React.CSSProperties;
+
+    return (
+        <section style={style}>
+            {children}
+        </section>
+    );
+};
diff --git a/ghost/signup-form/src/components/Frame.tsx b/ghost/signup-form/src/components/Frame.tsx
new file mode 100644
index 0000000000..0f5984009d
--- /dev/null
+++ b/ghost/signup-form/src/components/Frame.tsx
@@ -0,0 +1,70 @@
+import IFrame from './IFrame';
+import React, {useCallback, useState} from 'react';
+import styles from '../styles/iframe.css?inline';
+
+type FrameProps = {
+    children: React.ReactNode
+};
+
+/**
+ * This ResizableFrame takes the full width of the parent container
+ */
+export const Frame: React.FC<FrameProps> = ({children}) => {
+    const style: React.CSSProperties = {
+        width: '100%',
+        height: '0px' // = default height
+    };
+    return (
+        <ResizableFrame style={style} title="signup frame">
+            {children}
+        </ResizableFrame>
+    );
+};
+
+type ResizableFrameProps = FrameProps & {
+    style: React.CSSProperties,
+    title: string,
+};
+
+/**
+ * This TailwindFrame has the same height as it contents and mimics a shadow DOM component
+ */
+const ResizableFrame: React.FC<ResizableFrameProps> = ({children, style, title}) => {
+    const [iframeStyle, setIframeStyle] = useState(style);
+    const onResize = useCallback((iframeRoot: HTMLElement) => {
+        setIframeStyle((current) => {
+            return {
+                ...current,
+                height: `${iframeRoot.scrollHeight}px`
+            };
+        });
+    }, []);
+
+    return (
+        <TailwindFrame style={iframeStyle} title={title} onResize={onResize}>
+            {children}
+        </TailwindFrame>
+    );
+};
+
+type TailwindFrameProps = ResizableFrameProps & {
+    onResize: (el: HTMLElement) => void
+};
+
+/**
+ * Loads all the CSS styles inside an iFrame.
+ */
+const TailwindFrame: React.FC<TailwindFrameProps> = ({children, onResize, style, title}) => {
+    const head = (
+        <>
+            <style dangerouslySetInnerHTML={{__html: styles}} />
+            <meta content="width=device-width, initial-scale=1.0, maximum-scale=1.0" name="viewport" />
+        </>
+    );
+
+    return (
+        <IFrame head={head} style={style} title={title} onResize={onResize}>
+            {children}
+        </IFrame>
+    );
+};
diff --git a/ghost/signup-form/src/components/IFrame.tsx b/ghost/signup-form/src/components/IFrame.tsx
new file mode 100644
index 0000000000..7e6ede6458
--- /dev/null
+++ b/ghost/signup-form/src/components/IFrame.tsx
@@ -0,0 +1,68 @@
+import {Component} from 'react';
+import {createPortal} from 'react-dom';
+
+/**
+ * This is still a class component because it causes issues with the behaviour (DOM recreation and layout glitches) if we switch to a functional component. Feel free to refactor.
+ */
+export default class IFrame extends Component<any> {
+    node: any;
+    iframeHtml: any;
+    iframeHead: any;
+    iframeRoot: any;
+
+    constructor(props: {onResize: (el: HTMLElement) => void, children: any}) {
+        super(props);
+        this.setNode = this.setNode.bind(this);
+        this.node = null;
+    }
+
+    componentDidMount() {
+        this.node.addEventListener('load', this.handleLoad);
+    }
+
+    handleLoad = () => {
+        this.setupFrameBaseStyle();
+    };
+
+    componentWillUnmount() {
+        this.node.removeEventListener('load', this.handleLoad);
+    }
+
+    setupFrameBaseStyle() {
+        if (this.node.contentDocument) {
+            this.iframeHtml = this.node.contentDocument.documentElement;
+            this.iframeHead = this.node.contentDocument.head;
+            this.iframeRoot = this.node.contentDocument.body;
+            this.forceUpdate();
+
+            if (this.props.onResize) {
+                (new ResizeObserver(_ => this.props.onResize(this.iframeRoot)))?.observe?.(this.iframeRoot);
+            }
+
+            // This is a bit hacky, but prevents us to need to attach even listeners to all the iframes we have
+            // because when we want to listen for keydown events, those are only send in the window of iframe that is focused
+            // To get around this, we pass down the keydown events to the main window
+            // No need to detach, because the iframe would get removed
+            this.node.contentWindow.addEventListener('keydown', (e: KeyboardEvent | undefined) => {
+                // dispatch a new event
+                window.dispatchEvent(
+                    new KeyboardEvent('keydown', e)
+                );
+            });
+        }
+    }
+
+    setNode(node: any) {
+        this.node = node;
+    }
+
+    render() {
+        const {children, head, title = '', style = {}, onResize, ...rest} = this.props;
+        return (
+            <iframe srcDoc={`<!DOCTYPE html>`} {...rest} ref={this.setNode} frameBorder="0" style={style} title={title}>
+                {this.iframeHead && createPortal(head, this.iframeHead)}
+                {this.iframeRoot && createPortal(children, this.iframeRoot)}
+            </iframe>
+        );
+    }
+}
diff --git a/ghost/signup-form/src/components/pages/FormPage.tsx b/ghost/signup-form/src/components/pages/FormPage.tsx
new file mode 100644
index 0000000000..a98d55e743
--- /dev/null
+++ b/ghost/signup-form/src/components/pages/FormPage.tsx
@@ -0,0 +1,70 @@
+import React, {FormEventHandler} from 'react';
+import {AppContext} from '../../AppContext';
+import {isMinimal} from '../../utils/helpers';
+import {isValidEmail} from '../../utils/validator';
+
+type Props = {};
+
+export const FormPage: React.FC<Props> = () => {
+    const {options} = React.useContext(AppContext);
+
+    if (isMinimal(options)) {
+        return (
+            <Form />
+        );
+    }
+
+    const title = options.title;
+    const description = options.description;
+    const logo = options.logo;
+
+    return <div className='bg-grey-300 p-24'>
+        {logo && <img alt={title} src={logo} width='100' />}
+        {title && <h1 className="text-4xl font-bold">{title}</h1>}
+        {description && <p className='pb-3'>{description}</p>}
+
+        <Form />
+    </div>;
+};
+
+const Form: React.FC<Props> = () => {
+    const [email, setEmail] = React.useState('');
+    const [error, setError] = React.useState('');
+    const [loading, setLoading] = React.useState(false);
+    const {api, setPage, options} = React.useContext(AppContext);
+    const labels = options.labels;
+
+    const submit: FormEventHandler<HTMLFormElement> = async (e) => {
+        e.preventDefault();
+
+        if (!isValidEmail(email)) {
+            setError('Please enter a valid email address');
+            return;
+        }
+
+        setError('');
+        setLoading(true);
+
+        try {
+            await api.sendMagicLink({email, labels});
+            setPage('SuccessPage', {
+                email
+            });
+        } catch (_) {
+            setLoading(false);
+            setError('Something went wrong, please try again.');
+        }
+    };
+
+    const borderStyle = error ? 'border-red-500' : 'border-grey-500';
+
+    return (
+        <div>
+            <form className='flex' onSubmit={submit}>
+                <input className={'flex-1 p-3 border ' + borderStyle} disabled={loading} placeholder='jamie@example.com' type="text" value={email} onChange={e => setEmail(e.target.value)}/>
+                <button className='bg-accent p-3 text-white' disabled={loading} type='submit'>Subscribe</button>
+            </form>
+            {error && <p className='pt-0.5 text-red-500'>{error}</p>}
+        </div>
+    );
+};
diff --git a/ghost/signup-form/src/components/pages/SuccessPage.tsx b/ghost/signup-form/src/components/pages/SuccessPage.tsx
new file mode 100644
index 0000000000..2baec7140d
--- /dev/null
+++ b/ghost/signup-form/src/components/pages/SuccessPage.tsx
@@ -0,0 +1,21 @@
+import React from 'react';
+import {AppContext} from '../../AppContext';
+import {isMinimal} from '../../utils/helpers';
+
+type Props = {
+    email: string;
+};
+
+export const SuccessPage: React.FC<Props> = ({email}) => {
+    const {options} = React.useContext(AppContext);
+
+    if (isMinimal(options)) {
+        return <div>
+            <h1 className="text-xl font-bold">Now check your email!</h1>
+        </div>;
+    }
+    return <div className='bg-grey-300 p-24'>
+        <h1 className="text-4xl font-bold">Now check your email!</h1>
+        <p className='pb-3'>An email has been send to {email}.</p>
+    </div>;
+};
diff --git a/ghost/signup-form/src/index.tsx b/ghost/signup-form/src/index.tsx
new file mode 100644
index 0000000000..ae9e152e64
--- /dev/null
+++ b/ghost/signup-form/src/index.tsx
@@ -0,0 +1,64 @@
+import App from './App.tsx';
+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import {ROOT_DIV_CLASS} from './utils/constants';
+import {SignupFormOptions} from './AppContext.ts';
+
+function getScriptTag(): HTMLElement {
+    let scriptTag = document.currentScript as HTMLElement | null;
+
+    if (!scriptTag && import.meta.env.DEV) {
+        // In development mode, use any script tag (because in ESM mode, document.currentScript is not set)
+        // We use the first script in the body element
+        scriptTag = document.querySelector('body script:not([data-used="true"])') as HTMLElement;
+        if (scriptTag) {
+            scriptTag.dataset.used = 'true';
+        }
+    }
+
+    if (!scriptTag) {
+        throw new Error('[Signup Form] Cannot find current script tag');
+    }
+
+    return scriptTag;
+}
+
+/**
+ * Note that we need to support multiple signup forms on the same page, so we need to find the root div for each script tag
+ */
+function getRootDiv(scriptTag: HTMLElement) {
+    if (scriptTag.previousElementSibling && scriptTag.previousElementSibling.className === ROOT_DIV_CLASS) {
+        return scriptTag.previousElementSibling;
+    }
+
+    if (!scriptTag.parentElement) {
+        throw new Error('[Signup Form] Script tag does not have a parent element');
+    }
+
+    const elem = document.createElement('div');
+    elem.className = ROOT_DIV_CLASS;
+    scriptTag.parentElement.insertBefore(elem, scriptTag);
+    return elem;
+}
+
+function init() {
+    const scriptTag = getScriptTag();
+    const root = getRootDiv(scriptTag);
+
+    const options: SignupFormOptions = {
+        title: scriptTag.dataset.title || undefined,
+        description: scriptTag.dataset.description || undefined,
+        logo: scriptTag.dataset.logo || undefined,
+        color: scriptTag.dataset.color || undefined,
+        site: scriptTag.dataset.site || window.location.origin,
+        labels: scriptTag.dataset.labels ? scriptTag.dataset.labels.split(',') : []
+    };
+
+    ReactDOM.createRoot(root).render(
+        <React.StrictMode>
+            <App options={options} />
+        </React.StrictMode>
+    );
+}
+
+init();
diff --git a/ghost/signup-form/src/pages.tsx b/ghost/signup-form/src/pages.tsx
new file mode 100644
index 0000000000..3b696d172a
--- /dev/null
+++ b/ghost/signup-form/src/pages.tsx
@@ -0,0 +1,24 @@
+import React from 'react';
+import {FormPage} from './components/pages/FormPage';
+import {SuccessPage} from './components/pages/SuccessPage';
+
+// When adding a new page, also add it at the bottom to the Page type (*)
+const Pages = {
+    FormPage,
+    SuccessPage
+};
+
+// (*) Note we have repeated names here, and don't use PageName
+// to make type checking work for the Page type, so we have type checks in place
+// that we pass the right data to the right page (otherwise it will only check if
+// the name is correct, and the data is correct for any page, not the specific page)
+export type Page = PageType<'FormPage'> | PageType<'SuccessPage'>;
+
+export type PageName = keyof typeof Pages;
+export type PageType<Name extends PageName> = {
+    name: Name;
+    // get props of component
+    data: React.ComponentProps<typeof Pages[Name]>;
+}
+
+export default Pages;
diff --git a/ghost/signup-form/src/styles/demo.css b/ghost/signup-form/src/styles/demo.css
new file mode 100644
index 0000000000..8eb6c8a52f
--- /dev/null
+++ b/ghost/signup-form/src/styles/demo.css
@@ -0,0 +1,32 @@
+body {
+    font-family: sans-serif;
+}
+
+#demo-container {
+    max-width: 800px;
+    margin: 0 auto;
+    padding: 50px 0;
+}
+
+hr {
+    border: 0;
+    border-top: 1px solid #eee;
+    margin: 40px 0;
+}
+
+h1 {
+    padding: 20px 0;
+    margin: 0;
+}
+
+p {
+    padding: 0 0 40px 0;
+    margin: 0;
+    line-height: 2;
+    font-size: 16px;
+}
+
+code {
+    background: #eee;
+    padding: 2px 4px;
+}
diff --git a/ghost/signup-form/src/styles/iframe.css b/ghost/signup-form/src/styles/iframe.css
new file mode 100644
index 0000000000..817bdaa62c
--- /dev/null
+++ b/ghost/signup-form/src/styles/iframe.css
@@ -0,0 +1,8 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+/* Disable scrolling inside iframe */
+body, html {
+    overflow: hidden;
+}
diff --git a/ghost/signup-form/src/utils/api.tsx b/ghost/signup-form/src/utils/api.tsx
new file mode 100644
index 0000000000..ebf0d05f78
--- /dev/null
+++ b/ghost/signup-form/src/utils/api.tsx
@@ -0,0 +1,41 @@
+export const setupGhostApi = ({siteUrl}: {siteUrl: string}) => {
+    const apiPath = 'members/api';
+
+    function endpointFor({type, resource}: {type: 'members', resource: string}) {
+        if (type === 'members') {
+            return `${siteUrl.replace(/\/$/, '')}/${apiPath}/${resource}/`;
+        }
+
+        throw new Error(`Unknown type ${type}`);
+    }
+
+    return {
+        sendMagicLink: async ({email, labels}: {email: string, labels: string[]}) => {
+            const url = endpointFor({type: 'members', resource: 'send-magic-link'});
+
+            const payload = JSON.stringify({
+                email,
+                emailType: 'signup',
+                labels
+            });
+
+            const response = await fetch(url, {
+                headers: {
+                    'app-pragma': 'no-cache',
+                    'x-ghost-version': '5.47',
+                    'Content-Type': 'application/json'
+                },
+                body: payload,
+                method: 'POST'
+            });
+
+            if (response.status < 200 || response.status >= 300) {
+                return false;
+            }
+
+            return true;
+        }
+    };
+};
+
+export type GhostApi = ReturnType<typeof setupGhostApi>;
diff --git a/ghost/signup-form/src/utils/constants.tsx b/ghost/signup-form/src/utils/constants.tsx
new file mode 100644
index 0000000000..2ab9d19d4f
--- /dev/null
+++ b/ghost/signup-form/src/utils/constants.tsx
@@ -0,0 +1 @@
+export const ROOT_DIV_CLASS = 'gh-signup-root';
diff --git a/ghost/signup-form/src/utils/helpers.tsx b/ghost/signup-form/src/utils/helpers.tsx
new file mode 100644
index 0000000000..d8c4decde6
--- /dev/null
+++ b/ghost/signup-form/src/utils/helpers.tsx
@@ -0,0 +1,5 @@
+import {SignupFormOptions} from '../AppContext';
+
+export function isMinimal(options: SignupFormOptions): boolean {
+    return !options.title;
+}
diff --git a/ghost/signup-form/src/utils/validator.tsx b/ghost/signup-form/src/utils/validator.tsx
new file mode 100644
index 0000000000..ce75e1a5db
--- /dev/null
+++ b/ghost/signup-form/src/utils/validator.tsx
@@ -0,0 +1,4 @@
+export const isValidEmail = (email: string) => {
+    const re = /^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/;
+    return !!email && re.test(String(email).toLowerCase());
+};
diff --git a/ghost/signup-form/src/vite-env.d.ts b/ghost/signup-form/src/vite-env.d.ts
new file mode 100644
index 0000000000..11f02fe2a0
--- /dev/null
+++ b/ghost/signup-form/src/vite-env.d.ts
@@ -0,0 +1 @@
+/// <reference types="vite/client" />
diff --git a/ghost/signup-form/tailwind.config.cjs b/ghost/signup-form/tailwind.config.cjs
new file mode 100644
index 0000000000..af7f61507a
--- /dev/null
+++ b/ghost/signup-form/tailwind.config.cjs
@@ -0,0 +1,194 @@
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+    corePlugins: {
+        preflight: true
+    },
+    content: ['./index.html', './src/**/*.{js,ts,jsx,tsx}'],
+    theme: {
+        screens: {
+            sm: '480px',
+            md: '640px',
+            lg: '1024px',
+            xl: '1280px'
+        },
+        colors: {
+            accent: 'var(--gh-accent-color, #ff0095)',
+            transparent: 'transparent',
+            current: 'currentColor',
+            white: '#FFF',
+            black: '#15171A',
+            grey: {
+                DEFAULT: '#ABB4BE',
+                50: '#FAFAFB',
+                100: '#F4F5F6',
+                200: '#EBEEF0',
+                300: '#DDE1E5',
+                400: '#CED4D9',
+                500: '#AEB7C1',
+                600: '#95A1AD',
+                700: '#7C8B9A',
+                800: '#626D79',
+                900: '#394047'
+            },
+            green: {
+                DEFAULT: '#30CF43',
+                100: '#E1F9E4',
+                400: '#58DA67',
+                500: '#30CF43',
+                600: '#2AB23A'
+            },
+            blue: {
+                DEFAULT: '#14B8FF',
+                100: '#DBF4FF',
+                400: '#42C6FF',
+                500: '#14B8FF',
+                600: '#00A4EB'
+            },
+            purple: {
+                DEFAULT: '#8E42FF',
+                100: '#EDE0FF',
+                400: '#A366FF',
+                500: '#8E42FF',
+                600: '7B1FFF'
+            },
+            pink: {
+                DEFAULT: '#FB2D8D',
+                100: '#FFDFEE',
+                400: '#FF5CA8',
+                500: '#FB2D8D',
+                600: '#F70878'
+            },
+            red: {
+                DEFAULT: '#F50B23',
+                100: '#FFE0E0',
+                400: '#F9394C',
+                500: '#F50B23',
+                600: '#DC091E'
+            },
+            yellow: {
+                DEFAULT: '#FFB41F',
+                100: '#FFF1D6',
+                400: '#FFC247',
+                500: '#FFB41F',
+                600: '#F0A000'
+            },
+            lime: {
+                DEFAULT: '#B5FF18'
+            }
+        },
+        fontFamily: {
+            inter: 'Inter',
+            sans: 'Inter, -apple-system, BlinkMacSystemFont, avenir next, avenir, helvetica neue, helvetica, ubuntu, roboto, noto, segoe ui, arial, sans-serif',
+            serif: 'Georgia, serif',
+            mono: 'Consolas, Liberation Mono, Menlo, Courier, monospace'
+        },
+        boxShadow: {
+            DEFAULT: '0 0 1px rgba(0,0,0,.05), 0 5px 18px rgba(0,0,0,.08)',
+            sm: '0 0 1px rgba(0,0,0,.12), 0 1px 6px rgba(0,0,0,0.03), 0 6px 10px -8px rgba(0,0,0,.1)',
+            md: '0 0 1px rgba(0,0,0,.05), 0 8px 28px rgba(0,0,0,.12)',
+            lg: '0 0 7px rgba(0, 0, 0, 0.08), 0 2.1px 2.2px -5px rgba(0, 0, 0, 0.011), 0 5.1px 5.3px -5px rgba(0, 0, 0, 0.016), 0 9.5px 10px -5px rgba(0, 0, 0, 0.02), 0 17px 17.9px -5px rgba(0, 0, 0, 0.024), 0 31.8px 33.4px -5px rgba(0, 0, 0, 0.029), 0 76px 80px -5px rgba(0, 0, 0, 0.04)',
+            xl: '0 2.8px 2.2px rgba(0, 0, 0, 0.02), 0 6.7px 5.3px rgba(0, 0, 0, 0.028), 0 12.5px 10px rgba(0, 0, 0, 0.035), 0 22.3px 17.9px rgba(0, 0, 0, 0.042), 0 41.8px 33.4px rgba(0, 0, 0, 0.05), 0 100px 80px rgba(0, 0, 0, 0.07)',
+            inner: 'inset 0 0 4px 0 rgb(0 0 0 / 0.08)',
+            none: '0 0 #0000'
+        },
+        extend: {
+            spacing: {
+                px: '1px',
+                0: '0px',
+                0.5: '0.2rem',
+                1: '0.4rem',
+                1.5: '0.6rem',
+                2: '0.8rem',
+                2.5: '1rem',
+                3: '1.2rem',
+                3.5: '1.4rem',
+                4: '1.6rem',
+                5: '2rem',
+                6: '2.4rem',
+                7: '2.8rem',
+                8: '3.2rem',
+                9: '3.6rem',
+                10: '4rem',
+                11: '4.4rem',
+                12: '4.8rem',
+                14: '5.6rem',
+                16: '6.4rem',
+                18: '7.2rem',
+                20: '8rem',
+                24: '9.6rem',
+                28: '11.2rem',
+                32: '12.8rem',
+                36: '14.4rem',
+                40: '16rem',
+                44: '17.6rem',
+                48: '19.2rem',
+                52: '20.8rem',
+                56: '22.4rem',
+                60: '24rem',
+                64: '25.6rem',
+                72: '28.8rem',
+                80: '32rem',
+                96: '38.4rem'
+            },
+            maxWidth: {
+                none: 'none',
+                0: '0rem',
+                xs: '32rem',
+                sm: '38.4rem',
+                md: '44.8rem',
+                lg: '51.2rem',
+                xl: '57.6rem',
+                '2xl': '67.2rem',
+                '3xl': '76.8rem',
+                '4xl': '89.6rem',
+                '5xl': '102.4rem',
+                '6xl': '115.2rem',
+                '7xl': '128rem',
+                '8xl': '140rem',
+                '9xl': '156rem',
+                full: '100%',
+                min: 'min-content',
+                max: 'max-content',
+                fit: 'fit-content',
+                prose: '65ch'
+            },
+            borderRadius: {
+                sm: '0.3rem',
+                DEFAULT: '0.4rem',
+                md: '0.6rem',
+                lg: '0.8rem',
+                xl: '1.2rem',
+                '2xl': '1.6rem',
+                '3xl': '2.4rem',
+                full: '9999px'
+            },
+            fontSize: {
+                '2xs': '1.05rem',
+                base: '1.5rem',
+                xs: '1.2rem',
+                sm: '1.35rem',
+                md: '1.5rem',
+                lg: '1.8rem',
+                xl: '2rem',
+                '2xl': '2.4rem',
+                '3xl': '3rem',
+                '4xl': '3.6rem',
+                '5xl': ['4.2rem', '1.15'],
+                '6xl': ['6rem', '1'],
+                '7xl': ['7.2rem', '1'],
+                '8xl': ['9.6rem', '1'],
+                '9xl': ['12.8rem', '1']
+            },
+            lineHeight: {
+                base: '1.5em',
+                tight: '1.35em',
+                tighter: '1.25em',
+                supertight: '1.1em'
+            },
+            transition: {
+                basic: 'all 0.4 ease'
+            }
+        }
+    }
+    // plugins: [require('@tailwindcss/forms')],
+};
diff --git a/ghost/signup-form/test/hello.test.js b/ghost/signup-form/test/hello.test.js
new file mode 100644
index 0000000000..3224ab57bf
--- /dev/null
+++ b/ghost/signup-form/test/hello.test.js
@@ -0,0 +1,8 @@
+const assert = require('assert');
+
+describe('Hello world', function () {
+    it('Runs a test', function () {
+        // TODO: Write me!
+        assert.ok(require('../index'));
+    });
+});
diff --git a/ghost/signup-form/tsconfig.json b/ghost/signup-form/tsconfig.json
new file mode 100644
index 0000000000..c81ef9f382
--- /dev/null
+++ b/ghost/signup-form/tsconfig.json
@@ -0,0 +1,24 @@
+{
+  "compilerOptions": {
+    "target": "ESNext",
+    "lib": ["DOM", "DOM.Iterable", "ESNext"],
+    "module": "ESNext",
+    "skipLibCheck": true,
+
+    /* Bundler mode */
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "noEmit": true,
+    "jsx": "react-jsx",
+
+    /* Linting */
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noFallthroughCasesInSwitch": true
+  },
+  "include": ["src"],
+  "references": [{ "path": "./tsconfig.node.json" }]
+}
diff --git a/ghost/signup-form/tsconfig.node.json b/ghost/signup-form/tsconfig.node.json
new file mode 100644
index 0000000000..364bc0ea55
--- /dev/null
+++ b/ghost/signup-form/tsconfig.node.json
@@ -0,0 +1,10 @@
+{
+  "compilerOptions": {
+    "composite": true,
+    "skipLibCheck": true,
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "allowSyntheticDefaultImports": true
+  },
+  "include": ["vite.config.ts", "package.json"]
+}
diff --git a/ghost/signup-form/vite.config.ts b/ghost/signup-form/vite.config.ts
new file mode 100644
index 0000000000..48f42503cc
--- /dev/null
+++ b/ghost/signup-form/vite.config.ts
@@ -0,0 +1,60 @@
+import pkg from './package.json';
+import react from '@vitejs/plugin-react';
+import svgr from 'vite-plugin-svgr';
+import {defineConfig} from 'vitest/config';
+import {resolve} from 'path';
+
+const outputFileName = pkg.name[0] === '@' ? pkg.name.slice(pkg.name.indexOf('/') + 1) : pkg.name;
+
+// https://vitejs.dev/config/
+export default (function viteConfig() {
+    return defineConfig({
+        plugins: [
+            svgr(),
+            react()
+        ],
+        define: {
+            'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV),
+            'process.env.VITEST_SEGFAULT_RETRY': 3
+        },
+        preview: {
+            port: 6174
+        },
+        build: {
+            outDir: resolve(__dirname, 'umd'),
+            emptyOutDir: true,
+            minify: true,
+            sourcemap: true,
+            cssCodeSplit: true,
+            lib: {
+                entry: resolve(__dirname, 'src/index.tsx'),
+                formats: ['umd'],
+                name: pkg.name,
+                fileName(format) {
+                    if (format === 'umd') {
+                        return `${outputFileName}.min.js`;
+                    }
+
+                    return `${outputFileName}.js`;
+                }
+            },
+            rollupOptions: {
+                output: {}
+            },
+            commonjsOptions: {
+                include: [/packages/, /node_modules/]
+            }
+        },
+        test: {
+            globals: true, // required for @testing-library/jest-dom extensions
+            environment: 'jsdom',
+            setupFiles: './test/test-setup.js',
+            include: ['./test/unit/*'],
+            testTimeout: process.env.TIMEOUT ? parseInt(process.env.TIMEOUT) : 10000,
+            ...(process.env.CI && { // https://github.com/vitest-dev/vitest/issues/1674
+                minThreads: 1,
+                maxThreads: 2
+            })
+        }
+    });
+});