Build reusable octopus file browser

vite.config.js

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+import { readdirSync, statSync } from 'node:fs';
+import { resolve } from 'node:path';
+import { defineConfig } from 'vite';
+
+const VIRTUAL_ID = 'virtual:octopus-repo-tree';
+const RESOLVED_ID = `\0${VIRTUAL_ID}`;
+const ignored = new Set(['.git', 'demo', 'dist', 'node_modules']);
+
+function scan(directory) {
+  return readdirSync(directory, { withFileTypes: true })
+    .filter((entry) => !ignored.has(entry.name))
+    .map((entry) => {
+      const path = resolve(directory, entry.name);
+      const stats = statSync(path);
+      return entry.isDirectory()
+        ? { name: entry.name, type: 'directory', modified: stats.mtime.toISOString(), children: scan(path) }
+        : { name: entry.name, type: 'file', modified: stats.mtime.toISOString(), size: stats.size };
+    });
+}
+
+export default defineConfig({
+  build: { outDir: 'demo' },
+  plugins: [{
+    name: 'octopus-demo-tree',
+    resolveId(id) { return id === VIRTUAL_ID ? RESOLVED_ID : null; },
+    load(id) { return id === RESOLVED_ID ? `export default ${JSON.stringify(scan(process.cwd()))}` : null; },
+  }],
+});