@@ -219,6 +219,7 @@ class ZipFileHandle extends VirtualFileHandle {
   // its own modification time; once dirty the file is as new as its close.
   #doStat() {
     return createFileStats(this.#size, {
+      __proto__: null,
       mode: this.#entryMode,
       mtimeMs: this.#dirty || this.#modified === null ? undefined : this.#modified.getTime(),
     });
@@ -249,13 +250,15 @@ class ZipFileHandle extends VirtualFileHandle {
 
   async close() {
     if (this.#dirty && isWritableFlag(this.flags)) {
-      await this.#source.add(this.#name, this.#buffer.subarray(0, this.#size), { mode: this.#entryMode });
+      await this.#source.add(this.#name, this.#buffer.subarray(0, this.#size),
+                             { __proto__: null, mode: this.#entryMode });
     }
     await super.close();
   }
   closeSync() {
     if (this.#dirty && isWritableFlag(this.flags)) {
-      this.#source.addSync(this.#name, this.#buffer.subarray(0, this.#size), { mode: this.#entryMode });
+      this.#source.addSync(this.#name, this.#buffer.subarray(0, this.#size),
+                           { __proto__: null, mode: this.#entryMode });
     }
     super.closeSync();
   }
Original file line number	Diff line number	Diff line change
`@@ -219,6 +219,7 @@ class ZipFileHandle extends VirtualFileHandle {`
`219`	`219`	`// its own modification time; once dirty the file is as new as its close.`
`220`	`220`	`#doStat() {`
`221`	`221`	`return createFileStats(this.#size, {`
	`222`	`+ __proto__: null,`
`222`	`223`	`mode: this.#entryMode,`
`223`	`224`	`mtimeMs: this.#dirty \|\| this.#modified === null ? undefined : this.#modified.getTime(),`
`224`	`225`	`});`
`@@ -249,13 +250,15 @@ class ZipFileHandle extends VirtualFileHandle {`
`249`	`250`
`250`	`251`	`async close() {`
`251`	`252`	`if (this.#dirty && isWritableFlag(this.flags)) {`
`252`		`- await this.#source.add(this.#name, this.#buffer.subarray(0, this.#size), { mode: this.#entryMode });`
	`253`	`+ await this.#source.add(this.#name, this.#buffer.subarray(0, this.#size),`
	`254`	`+ { __proto__: null, mode: this.#entryMode });`
`253`	`255`	`}`
`254`	`256`	`await super.close();`
`255`	`257`	`}`
`256`	`258`	`closeSync() {`
`257`	`259`	`if (this.#dirty && isWritableFlag(this.flags)) {`
`258`		`- this.#source.addSync(this.#name, this.#buffer.subarray(0, this.#size), { mode: this.#entryMode });`
	`260`	`+ this.#source.addSync(this.#name, this.#buffer.subarray(0, this.#size),`
	`261`	`+ { __proto__: null, mode: this.#entryMode });`
`259`	`262`	`}`
`260`	`263`	`super.closeSync();`
`261`	`264`	`}`