feat: move registry and runtime into separate packages

packages/registry/src/node-registry-cache.ts

@@ -0,0 +1,38 @@
+import type { AsyncCache } from '@nodes/types';
+import { openDB, type IDBPDatabase } from 'idb';
+
+export class IndexDBCache implements AsyncCache<ArrayBuffer> {
+
+  size: number = 100;
+
+  db: Promise<IDBPDatabase<ArrayBuffer>>;
+  private _cache = new Map<string, ArrayBuffer>();
+
+  constructor(id: string) {
+    this.db = openDB<ArrayBuffer>('cache/' + id, 1, {
+      upgrade(db) {
+        db.createObjectStore('keyval');
+      },
+    });
+  }
+
+  async get(key: string) {
+    let res = this._cache.get(key);
+    if (!res) {
+      res = await (await this.db).get('keyval', key);
+    }
+    if (res) {
+      this._cache.set(key, res);
+    }
+    return res;
+  }
+  async set(key: string, value: ArrayBuffer) {
+    this._cache.set(key, value);
+    const db = await this.db;
+    await db.put('keyval', value, key);
+  }
+  clear() {
+    this.db.then(db => db.clear('keyval'));
+  }
+
+}