feat: Badge component

apps/docs/src/examples/badge.module.css

@@ -0,0 +1,7 @@
+.badge { 
+  display: inline-block; 
+  padding: 0.2em 0.4em; 
+  background-color: hsl(201 96% 32%);
+  color: white; border-radius: 12px; 
+  font-size: 0.875rem;
+}

apps/docs/src/examples/badge.tsx

@@ -0,0 +1,11 @@
+import { Badge } from "@kobalte/core/badge";
+
+import style from "./badge.module.css";
+
+export function BasicExample() {
+	return (
+		<Badge class={style.badge} textValue="Unread messages: 5">
+			5 messages
+		</Badge>
+	);
+}

apps/docs/src/routes/docs/core.tsx

@@ -49,6 +49,11 @@ const CORE_NAV_SECTIONS: NavSection[] = [
 				title: "Alert Dialog",
 				href: "/docs/core/components/alert-dialog",
 			},
+			{
+				title: "Badge",
+				href: "/docs/core/components/badge",
+				status: "new",
+			},
 			{
 				title: "Breadcrumbs",
 				href: "/docs/core/components/breadcrumbs",

apps/docs/src/routes/docs/core/components/badge.mdx

@@ -0,0 +1,94 @@
+import { Preview, TabsSnippets, Callout } from "../../../../components";
+import { BasicExample } from "../../../../examples/badge";
+
+# Badge
+
+A `Badge` component is used to display small pieces of information or status indicators.
+
+## Import
+
+```ts
+import { Badge } from "@kobalte/core/badge";
+// or
+import { Root } from "@kobalte/core/badge";
+// or (deprecated)
+import { Badge } from "@kobalte/core";
+```
+
+## Features
+
+- Auto-populated ARIA labeling via the textValue prop for enhanced accessibility.
+- Built-in ARIA support with role="status" to communicate dynamic updates.
+
+## Anatomy
+
+The badge consists of:
+
+- **Badge:** The root container for the badge that supports accessibility and content customization.
+
+```tsx
+<Badge textValue="3 online users">3</Badge>
+```
+
+## Example
+
+<Preview>
+	<BasicExample />
+</Preview>
+
+<TabsSnippets>
+  <TabsSnippets.List>
+    <TabsSnippets.Trigger value="index.tsx">index.tsx</TabsSnippets.Trigger>
+    <TabsSnippets.Trigger value="style.css">style.css</TabsSnippets.Trigger>
+  </TabsSnippets.List>
+  {/* <!-- prettier-ignore-start -->*/}
+  <TabsSnippets.Content value="index.tsx">
+    ```tsx
+    import { Badge } from "@kobalte/core/badge";
+    import "./style.css";
+
+    function App() {
+      return (
+        <Badge class="badge" textValue="Unread messages: 5">
+			5 messages
+		</Badge>
+      );
+    }
+    ```
+
+  </TabsSnippets.Content>
+  <TabsSnippets.Content value="style.css">
+    ```css
+    .badge { 
+      display: inline-block; 
+      padding: 0.2em 0.4em; 
+      background-color: hsl(201 96% 32%);
+      color: white; border-radius: 12px; 
+      font-size: 0.875rem;
+    }
+    ```
+
+  </TabsSnippets.Content>
+  {/* <!-- prettier-ignore-end -->*/}
+</TabsSnippets>
+
+
+## API Reference
+
+### Badge
+
+`Badge` is equivalent to the `Root` import from `@kobalte/core/badge` (and deprecated `Badge.Root`).
+
+| Prop         | Description                                                                                                                                                    |
+| :----------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| textValue    | `string \| undefined` <br/> The textValue prop is essential for accessibility. It auto-populates the aria-label attribute, allowing screen readers to interpret the badge’s content.           |
+
+| Data attribute | Description                                                   |
+| :------------- | :------------------------------------------------------------ |
+| data-label     | Present when textValue is passed or aria-label is passed as a prop. |
+
+## Rendered elements
+
+| Component         | Default rendered element  |
+| :---------------- | :------------------------ |
+| `Badge`           | `span`                    |

packages/core/dev/App.tsx

@@ -1,5 +1,10 @@
+import { Badge } from "../src/badge";
+
 export default function App() {
 	return (
-		<></>
+		<>
+			<Badge as="div" class="aaall" aria-label="qqqq" aria-checked textValue="aaaa">aaa1123</Badge>
+			<Badge textValue="10">11</Badge>
+		</>
 	);
 }

packages/core/src/badge/badge-root.tsx

@@ -0,0 +1,46 @@
+/*
+ * Portions of this file are based on code from react-spectrum.
+ * Apache License Version 2.0, Copyright 2020 Adobe.
+ *
+ * Credits to the React Spectrum team:
+ * https://github.com/adobe/react-spectrum/blob/main/packages/%40react-spectrum/badge/src/Badge.tsx
+ */
+
+import { type ValidComponent, splitProps } from "solid-js";
+import { Polymorphic, type PolymorphicProps } from "../polymorphic";
+
+export interface BadgeRootOptions {
+	/**
+	 * Optional textValue for badge.
+	 */
+	textValue?: string;
+}
+
+export interface BadgeRootCommonProps<T extends HTMLElement = HTMLElement> {
+	"aria-label"?: string;
+}
+
+export interface BadgeRootRenderProps extends BadgeRootCommonProps {}
+
+export type BadgeRootProps<
+	T extends ValidComponent | HTMLElement = HTMLElement,
+> = BadgeRootOptions & Partial<BadgeRootCommonProps>;
+
+export function BadgeRoot<T extends ValidComponent = "span">(
+	props: PolymorphicProps<T, BadgeRootProps<T>>,
+) {
+	const [local, others] = splitProps(props, ["textValue", "aria-label"]);
+
+	const ariaLabel = () => local["aria-label"] || local.textValue;
+
+	return (
+		<Polymorphic<BadgeRootRenderProps>
+			as="span"
+			role="status"
+			aria-label={ariaLabel()}
+			{...others}
+		>
+			{others.children}
+		</Polymorphic>
+	);
+}

packages/core/src/badge/badge.test.tsx

@@ -0,0 +1,33 @@
+import { render } from "@solidjs/testing-library";
+import * as Badge from ".";
+
+describe("Badge", () => {
+	it("badge with textValue", () => {
+		const { getByRole } = render(() => (
+			<Badge.Root textValue="Online">Online</Badge.Root>
+		));
+
+		const badge = getByRole("status");
+		expect(badge).toHaveTextContent("Online");
+	});
+
+	it("badge with defined aria-label", () => {
+		const { getByText } = render(() => (
+			<Badge.Root textValue="Online" aria-label="User is online">
+				Online
+			</Badge.Root>
+		));
+
+		const badge = getByText("Online");
+		expect(badge).toHaveAttribute("aria-label", "User is online");
+	});
+
+	it("badge with default aria-label as textValue", () => {
+		const { getByRole } = render(() => (
+			<Badge.Root textValue="Online">Online</Badge.Root>
+		));
+
+		const badge = getByRole("status");
+		expect(badge).toHaveAttribute("aria-label", "Online");
+	});
+});

packages/core/src/badge/index.tsx

@@ -0,0 +1,17 @@
+import {
+	type BadgeRootCommonProps,
+	type BadgeRootOptions,
+	type BadgeRootProps,
+	type BadgeRootRenderProps,
+	BadgeRoot as Root,
+} from "./badge-root";
+
+export type {
+	BadgeRootOptions,
+	BadgeRootCommonProps,
+	BadgeRootRenderProps,
+	BadgeRootProps,
+};
+export { Root };
+
+export const Badge = Root;

packages/core/src/index.tsx

@@ -13,6 +13,7 @@ export * from "./toast/toaster";
 export * as Accordion from "./accordion";
 export * as Alert from "./alert";
 export * as AlertDialog from "./alert-dialog";
+export * as Badge from "./badge";
 export * as Breadcrumbs from "./breadcrumbs";
 export * as Button from "./button";
 //export * as Calendar from "./calendar";