Add FileUploaderBeta Basic Example (#5337)

documentation-site/examples/file-uploader-beta/basic.tsx

@@ -0,0 +1,40 @@
+import * as React from "react";
+import { FileUploaderBeta, type FileRow } from "baseui/file-uploader-beta";
+
+export default function Example() {
+  const [fileRows, setFileRows] = React.useState<Array<FileRow>>([
+    {
+      file: new File(["test file"], "file.txt"),
+      status: "processed",
+      errorMessage: null,
+    },
+  ]);
+
+  const processFileOnDrop = (
+    file: File,
+  ): Promise<{ errorMessage: string | null; fileInfo?: any }> => {
+    return new Promise((resolve) => {
+      // Fake an upload process for 2 seconds
+      // For a real-world scenario, replace this with application upload logic
+      setTimeout(() => {
+        let fileInfo = {
+          file,
+          objectID: "1234",
+          uploadID: "1234",
+          uploadStatus: "success",
+        };
+        resolve({ errorMessage: null, fileInfo });
+      }, 2000);
+    });
+  };
+
+  return (
+    <FileUploaderBeta
+      fileRows={fileRows}
+      itemPreview
+      maxFiles={5}
+      processFileOnDrop={processFileOnDrop}
+      setFileRows={setFileRows}
+    />
+  );
+}

documentation-site/pages/components/file-uploader-beta.mdx

@@ -2,6 +2,8 @@ import Example from "../../components/example";
 import Layout from "../../components/layout";
 import Exports from "../../components/exports";
 
+import FileUploaderBetaBasic from "examples/file-uploader-beta/basic.tsx";
+
 import * as FileUploaderBetaExports from "baseui/file-uploader-beta";
 
 import Yard from "../../components/yard/index";
@@ -36,6 +38,12 @@ By default, the file uploader does not concern itself with validating and discar
 
 To learn more, read the corresponding [OWASP article on file uploads](https://www.owasp.org/index.php/Unrestricted_File_Upload).
 
+## Examples
+
+<Example title="Basic usage" path="file-uploader-beta/basic.tsx">
+  <FileUploaderBetaBasic />
+</Example>
+
 <Exports
   component={FileUploaderBetaExports}
   title="File uploader beta exports"