(ml5717) force gc yjs room on destruct

package.json

@@ -19,7 +19,7 @@
     "test": "jest --testPathIgnorePatterns src/liowebrtc src/rtcpeerconnection src/signalbuddy src/yjs src/drawing-crdt",
     "test-changed": "jest --only-changed --testPathIgnorePatterns src/liowebrtc src/rtcpeerconnection src/signalbuddy src/yjs src/drawing-crdt",
     "test-coverage": "jest --coverage --testPathIgnorePatterns src/liowebrtc src/rtcpeerconnection src/signalbuddy src/yjs src/drawing-crdt",
-    "benchmarks": "node --experimental-modules __benchmarks__/puppeteer.js | npx tap-summary",
+    "benchmarks": "node --experimental-modules __benchmarks__/puppeteer.js | npx tap-summary --no-progress",
     "test-e2e:peer1": "testcafe chrome:headless __e2e_tests__/peer1.e2e.js",
     "test-e2e:peer2": "testcafe chrome:headless __e2e_tests__/peer2.e2e.js",
     "test-e2e": "run-p test-e2e:*",

src/y-crdt.js

@@ -13,6 +13,29 @@ yUnion(Y)
 yMap(Y)
 yArray(Y)
 
+function gc(obj) {
+  const objs = new Set()
+
+  const free = (obj) => {
+    if (obj == null) return
+
+    for (const key of Object.keys(obj)) {
+      if (typeof obj[key] == "object") {
+        if (!objs.has(obj[key])) {
+          objs.add(obj[key])
+          free(obj[key])
+        }
+      }
+
+      delete obj[key]
+    }
+  }
+
+  free(obj)
+
+  objs.clear()
+}
+
 export default class YjsCRDTWrapper extends Y.AbstractConnector {
   constructor(y, options) {
     if (options === undefined) {
@@ -92,10 +115,9 @@ export default class YjsCRDTWrapper extends Y.AbstractConnector {
     this.mesh.disconnect()
     this.mesh = null
 
-    this.y.destroy()
-    this.y = null
+    delete this.room
 
-    this.room = null
+    gc(this)
   }
 
   static async initialise(room, options) {