feat(theme-classic): standalone Admonition component

packages/docusaurus-theme-classic/src/theme-classic.d.ts

@@ -11,6 +11,18 @@ declare module '@docusaurus/theme-classic' {
   };
 }
 
+declare module '@theme/Admonition' {
+  import type {ReactNode} from 'react';
+
+  export interface Props {
+    readonly children: ReactNode;
+    readonly type: 'note' | 'tip' | 'danger' | 'info' | 'caution';
+    readonly icon?: ReactNode;
+    readonly title?: string;
+  }
+  export default function Admonition(props: Props): JSX.Element;
+}
+
 declare module '@theme/AnnouncementBar' {
   const AnnouncementBar: () => JSX.Element | null;
   export default AnnouncementBar;

packages/docusaurus-theme-classic/src/theme/Admonition/index.tsx

@@ -0,0 +1,106 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import React from 'react';
+import clsx from 'clsx';
+import {Props} from '@theme/Admonition';
+
+const icons = {
+  note: (
+    <svg
+      xmlns="http://www.w3.org/2000/svg"
+      width="14"
+      height="16"
+      viewBox="0 0 14 16">
+      <path
+        fillRule="evenodd"
+        d="M6.3 5.69a.942.942 0 0 1-.28-.7c0-.28.09-.52.28-.7.19-.18.42-.28.7-.28.28 0 .52.09.7.28.18.19.28.42.28.7 0 .28-.09.52-.28.7a1 1 0 0 1-.7.3c-.28 0-.52-.11-.7-.3zM8 7.99c-.02-.25-.11-.48-.31-.69-.2-.19-.42-.3-.69-.31H6c-.27.02-.48.13-.69.31-.2.2-.3.44-.31.69h1v3c.02.27.11.5.31.69.2.2.42.31.69.31h1c.27 0 .48-.11.69-.31.2-.19.3-.42.31-.69H8V7.98v.01zM7 2.3c-3.14 0-5.7 2.54-5.7 5.68 0 3.14 2.56 5.7 5.7 5.7s5.7-2.55 5.7-5.7c0-3.15-2.56-5.69-5.7-5.69v.01zM7 .98c3.86 0 7 3.14 7 7s-3.14 7-7 7-7-3.12-7-7 3.14-7 7-7z"
+      />
+    </svg>
+  ),
+  tip: (
+    <svg
+      xmlns="http://www.w3.org/2000/svg"
+      width="12"
+      height="16"
+      viewBox="0 0 12 16">
+      <path
+        fillRule="evenodd"
+        d="M6.5 0C3.48 0 1 2.19 1 5c0 .92.55 2.25 1 3 1.34 2.25 1.78 2.78 2 4v1h5v-1c.22-1.22.66-1.75 2-4 .45-.75 1-2.08 1-3 0-2.81-2.48-5-5.5-5zm3.64 7.48c-.25.44-.47.8-.67 1.11-.86 1.41-1.25 2.06-1.45 3.23-.02.05-.02.11-.02.17H5c0-.06 0-.13-.02-.17-.2-1.17-.59-1.83-1.45-3.23-.2-.31-.42-.67-.67-1.11C2.44 6.78 2 5.65 2 5c0-2.2 2.02-4 4.5-4 1.22 0 2.36.42 3.22 1.19C10.55 2.94 11 3.94 11 5c0 .66-.44 1.78-.86 2.48zM4 14h5c-.23 1.14-1.3 2-2.5 2s-2.27-.86-2.5-2z"
+      />
+    </svg>
+  ),
+  danger: (
+    <svg
+      xmlns="http://www.w3.org/2000/svg"
+      width="12"
+      height="16"
+      viewBox="0 0 12 16">
+      <path
+        fillRule="evenodd"
+        d="M5.05.31c.81 2.17.41 3.38-.52 4.31C3.55 5.67 1.98 6.45.9 7.98c-1.45 2.05-1.7 6.53 3.53 7.7-2.2-1.16-2.67-4.52-.3-6.61-.61 2.03.53 3.33 1.94 2.86 1.39-.47 2.3.53 2.27 1.67-.02.78-.31 1.44-1.13 1.81 3.42-.59 4.78-3.42 4.78-5.56 0-2.84-2.53-3.22-1.25-5.61-1.52.13-2.03 1.13-1.89 2.75.09 1.08-1.02 1.8-1.86 1.33-.67-.41-.66-1.19-.06-1.78C8.18 5.31 8.68 2.45 5.05.32L5.03.3l.02.01z"
+      />
+    </svg>
+  ),
+  info: (
+    <svg
+      xmlns="http://www.w3.org/2000/svg"
+      width="14"
+      height="16"
+      viewBox="0 0 14 16">
+      <path
+        fillRule="evenodd"
+        d="M7 2.3c3.14 0 5.7 2.56 5.7 5.7s-2.56 5.7-5.7 5.7A5.71 5.71 0 0 1 1.3 8c0-3.14 2.56-5.7 5.7-5.7zM7 1C3.14 1 0 4.14 0 8s3.14 7 7 7 7-3.14 7-7-3.14-7-7-7zm1 3H6v5h2V4zm0 6H6v2h2v-2z"
+      />
+    </svg>
+  ),
+  caution: (
+    <svg
+      xmlns="http://www.w3.org/2000/svg"
+      width="16"
+      height="16"
+      viewBox="0 0 16 16">
+      <path
+        fillRule="evenodd"
+        d="M8.893 1.5c-.183-.31-.52-.5-.887-.5s-.703.19-.886.5L.138 13.499a.98.98 0 0 0 0 1.001c.193.31.53.501.886.501h13.964c.367 0 .704-.19.877-.5a1.03 1.03 0 0 0 .01-1.002L8.893 1.5zm.133 11.497H6.987v-2.003h2.039v2.003zm0-3.004H6.987V5.987h2.039v4.006z"
+      />
+    </svg>
+  ),
+};
+
+const ifmClassNames = {
+  note: 'secondary',
+  tip: 'success',
+  danger: 'danger',
+  info: 'info',
+  caution: 'warning',
+};
+
+export default function Admonition({
+  children,
+  type,
+  title = type,
+  icon = icons[type],
+}: Props): JSX.Element {
+  return (
+    <div
+      className={clsx(
+        'admonition',
+        `admonition-${type}`,
+        'alert',
+        `alert--${ifmClassNames[type]}`,
+      )}>
+      <div className="admonition-heading">
+        <h5>
+          <span className="admonition-icon">{icon}</span>
+          {title}
+        </h5>
+      </div>
+      <div className="admonition-content">{children}</div>
+    </div>
+  );
+}

website/docs/guides/markdown-features/markdown-features-admonitions.mdx

@@ -121,3 +121,43 @@ import TabItem from '@theme/TabItem';
 ```
 
 :::
+
+## Usage in JSX
+
+Outside of Markdown, you can use the `@theme/Admonitions` component to get the same output.
+
+```jsx title="MyReactPage.jsx"
+import Admonition from '@theme/Admonitions';
+
+export default function MyReactPage() {
+  return (
+    <div>
+      <Admonition type="info">
+        <p>Some information</p>
+      </Admonition>
+    </div>
+  );
+}
+```
+
+The types that are accepted are the same as above: `note`, `tip`, `danger`, `info`, `caution`. Optionally, you can specify an icon by passing a JSX element or a string, or a title:
+
+```jsx title="MyReactPage.jsx"
+<Admonition type="tip" icon="💡" title="Did you know...">
+  <p>
+    Use plugins to introduce shorter syntax for the most commonly used JSX
+    elements in your project.
+  </p>
+</Admonition>
+```
+
+```mdx-code-block
+import Admonition from '@theme/Admonition';
+import BrowserWindow from '@site/src/components/BrowserWindow';
+
+<BrowserWindow>
+<Admonition type="tip" icon="💡" title="Did you know...">
+<p>Use plugins to introduce shorter syntax for the most commonly used JSX elements in your project.</p>
+</Admonition>
+</BrowserWindow>
+```