implement file system observer

src/routes/(editor)/experimental/file-system-observer.tsx

@@ -0,0 +1,32 @@
+import { createEffect, createSignal, on } from "solid-js";
+import { readFiles } from "~/features/file";
+import { contentsOf } from "~/features/file/helpers";
+
+export default function FileObserver(props: {}) {
+    const [dir, setDir] = createSignal<FileSystemDirectoryHandle>();
+
+    const files = readFiles(dir);
+    const contents = contentsOf(dir);
+
+    const open = async () => {
+        const handle = await window.showDirectoryPicker();
+
+        setDir(handle)
+    };
+
+    createEffect(() => {
+        console.log('dir', dir());
+    });
+
+    createEffect(() => {
+        console.log('files', files());
+    });
+
+    createEffect(() => {
+        console.log('contents', contents());
+    });
+
+    return <div>
+        <button onclick={open}>Select folder</button>
+    </div>;
+}