Fix error in tests

package.json

@@ -1,7 +1,7 @@
 {
   "name": "json-stream-stringify",
   "description": "JSON.Stringify as a readable stream",
-  "version": "3.1.2",
+  "version": "3.1.3",
   "license": "MIT",
   "author": "Faleij <[email protected]> (https://github.com/faleij)",
   "repository": {
@@ -71,7 +71,7 @@
     "typescript": "^4.7.4"
   },
   "volta": {
-    "node": "18.16.0"
+    "node": "16.20.2"
   },
   "engines": {
     "node": ">=7.10.1"

src/JsonStreamStringify.ts

@@ -494,11 +494,12 @@ export class JsonStreamStringify extends Readable {
     this.readState = ReadState.Reading;
     this.pushCalled = false;
     let p;
-    while (!this.pushCalled && this.item !== this.root && !this.destroyed) {
+    while (!this.pushCalled && this.item !== this.root && this.buffer !== undefined) {
       p = this.item.read(size);
       // eslint-disable-next-line no-await-in-loop
       if (p) await p;
     }
+    if (this.buffer === undefined) return;
     if (this.item === this.root) {
       if (this.buffer.length) this.push(this.buffer);
       this.push(null);
@@ -513,6 +514,7 @@ export class JsonStreamStringify extends Readable {
   }
 
   private cleanup() {
+    this.readState = ReadState.Consumed;
     this.buffer = undefined;
     this.visited = undefined;
     this.item = undefined;