2 files changed, 19 insertions, 1 deletions
diff --git a/ext/node/polyfills/_fs/_fs_writeFile.ts b/ext/node/polyfills/_fs/_fs_writeFile.ts
index f0014c36d..dd324815b 100644
--- a/ext/node/polyfills/_fs/_fs_writeFile.ts
+++ b/ext/node/polyfills/_fs/_fs_writeFile.ts
@@ -23,6 +23,7 @@ import {
   validateStringAfterArrayBufferView,
 } from "ext:deno_node/internal/fs/utils.mjs";
 import { promisify } from "ext:deno_node/internal/util.mjs";
+import { FileHandle } from "ext:deno_node/internal/fs/handle.ts";
 import { FsFile } from "ext:deno_fs/30_fs.js";
 
 interface Writer {
@@ -30,7 +31,7 @@ interface Writer {
 }
 
 export function writeFile(
-  pathOrRid: string | number | URL,
+  pathOrRid: string | number | URL | FileHandle,
   data: string | Uint8Array,
   optOrCallback: Encodings | CallbackWithError | WriteFileOptions | undefined,
   callback?: CallbackWithError,
@@ -45,6 +46,7 @@ export function writeFile(
   }
 
   pathOrRid = pathOrRid instanceof URL ? pathFromURL(pathOrRid) : pathOrRid;
+  pathOrRid = pathOrRid instanceof FileHandle ? pathOrRid.fd : pathOrRid;
 
   const flag: string | undefined = isFileOptions(options)
     ? options.flag
diff --git a/ext/node/polyfills/internal/fs/handle.ts b/ext/node/polyfills/internal/fs/handle.ts
index e422e2ba0..fc3a7ae20 100644
--- a/ext/node/polyfills/internal/fs/handle.ts
+++ b/ext/node/polyfills/internal/fs/handle.ts
@@ -133,12 +133,28 @@ export class FileHandle extends EventEmitter {
     }
   }
 
+  writeFile(data, options): Promise<void> {
+    return fsCall(promises.writeFile, this, data, options);
+  }
+
   close(): Promise<void> {
     // Note that Deno.close is not async
     return Promise.resolve(core.close(this.fd));
   }
 }
 
+function fsCall(fn, handle, ...args) {
+  if (handle.fd === -1) {
+    const err = new Error("file closed");
+    throw Object.assign(err, {
+      code: "EBADF",
+      syscall: fn.name,
+    });
+  }
+
+  return fn(handle, ...args);
+}
+
 export default {
   FileHandle,
 };