diff --git a/src/fsa-to-node/FsaNodeFs.ts b/src/fsa-to-node/FsaNodeFs.ts
index f6dd8bed1..ff1843568 100644
--- a/src/fsa-to-node/FsaNodeFs.ts
+++ b/src/fsa-to-node/FsaNodeFs.ts
@@ -819,7 +819,7 @@ export class FsaNodeFs extends FsaNodeCore implements FsCallbackApi, FsSynchrono
     const filename = pathToFilename(path);
     mode = mode | 0;
     const adapter = this.getSyncAdapter();
-    adapter.call('access', { filename, mode });
+    adapter.call('access', [filename, mode]);
   };
 
   public readonly readFileSync: FsSynchronousApi['readFileSync'] = (
@@ -830,7 +830,7 @@ export class FsaNodeFs extends FsaNodeCore implements FsCallbackApi, FsSynchrono
     const flagsNum = flagsToNumber(opts.flag);
     const filename = this.getFileName(id);
     const adapter = this.getSyncAdapter();
-    const uint8 = adapter.call('readFile', { filename, opts });
+    const uint8 = adapter.call('readFile', [filename, opts]);
     const buffer = Buffer.from(uint8.buffer, uint8.byteOffset, uint8.byteLength);
     return bufferToEncoding(buffer, opts.encoding);
   };
@@ -846,7 +846,7 @@ export class FsaNodeFs extends FsaNodeCore implements FsCallbackApi, FsSynchrono
     const buf = dataToBuffer(data, opts.encoding);
     const filename = this.getFileName(id);
     const adapter = this.getSyncAdapter();
-    adapter.call('writeFile', { filename, data: bufToUint8(buf), opts });
+    adapter.call('writeFile', [filename, bufToUint8(buf), opts]);
   };
 
   public readonly appendFileSync: FsSynchronousApi['appendFileSync'] = (
@@ -859,7 +859,7 @@ export class FsaNodeFs extends FsaNodeCore implements FsCallbackApi, FsSynchrono
     const filename = this.getFileName(id);
     const buf = dataToBuffer(data, opts.encoding);
     const adapter = this.getSyncAdapter();
-    adapter.call('appendFile', { filename, data: bufToUint8(buf), opts });
+    adapter.call('appendFile', [filename, bufToUint8(buf), opts]);
   };
 
   public readonly closeSync: FsSynchronousApi['closeSync'] = (fd: number) => {
@@ -887,7 +887,7 @@ export class FsaNodeFs extends FsaNodeCore implements FsCallbackApi, FsSynchrono
     const srcFilename = pathToFilename(src);
     const destFilename = pathToFilename(dest);
     const adapter = this.getSyncAdapter();
-    adapter.call('copy', { src: srcFilename, dst: destFilename, flags });
+    adapter.call('copy', [srcFilename, destFilename, flags]);
   };
 
   public readonly renameSync: FsSynchronousApi['renameSync'] = (
@@ -897,7 +897,7 @@ export class FsaNodeFs extends FsaNodeCore implements FsCallbackApi, FsSynchrono
     const srcFilename = pathToFilename(oldPath);
     const destFilename = pathToFilename(newPath);
     const adapter = this.getSyncAdapter();
-    adapter.call('move', { src: srcFilename, dst: destFilename });
+    adapter.call('move', [srcFilename, destFilename]);
   };
 
   public readonly rmdirSync: FsSynchronousApi['rmdirSync'] = (path: misc.PathLike, opts?: opts.IRmdirOptions): void => {
diff --git a/src/fsa-to-node/index.ts b/src/fsa-to-node/index.ts
index a270c79a0..80241e931 100644
--- a/src/fsa-to-node/index.ts
+++ b/src/fsa-to-node/index.ts
@@ -1,9 +1,3 @@
-import { FsaNodeFs } from './FsaNodeFs';
-import { FsaNodeSyncAdapterWorker } from './worker/FsaNodeSyncAdapterWorker';
-import type { IFileSystemDirectoryHandle } from '../fsa/types';
+export { FsaNodeFs } from './FsaNodeFs';
+export { FsaNodeSyncAdapterWorker } from './worker/FsaNodeSyncAdapterWorker';
 
-export { FsaNodeFs, FsaNodeSyncAdapterWorker };
-
-export const fsaToNode = (root: IFileSystemDirectoryHandle) => {
-  return new FsaNodeFs(root);
-};
diff --git a/src/fsa-to-node/types.ts b/src/fsa-to-node/types.ts
index 23b14f1ee..77e65a6ea 100644
--- a/src/fsa-to-node/types.ts
+++ b/src/fsa-to-node/types.ts
@@ -9,12 +9,12 @@ export type FsLocation = [folder: string[], file: string];
  */
 export interface FsaNodeSyncAdapterApi {
   stat(location: FsLocation): FsaNodeSyncAdapterStats;
-  access(req: { filename: string; mode: number }): void;
-  readFile(req: { filename: string; opts?: opts.IReadFileOptions }): Uint8Array;
-  writeFile(req: { filename: string; data: Uint8Array; opts?: opts.IWriteFileOptions }): void;
-  appendFile(req: { filename: string; data: Uint8Array; opts?: opts.IAppendFileOptions }): void;
-  copy(req: { src: string; dst: string; flags?: number }): void;
-  move(req: { src: string; dst: string }): void;
+  access(req: [filename: string, mode: number]): void;
+  readFile(req: [filename: string, opts?: opts.IReadFileOptions]): Uint8Array;
+  writeFile(req: [filename: string, data: Uint8Array, opts?: opts.IWriteFileOptions]): void;
+  appendFile(req: [filename: string, data: Uint8Array, opts?: opts.IAppendFileOptions]): void;
+  copy(req: [src: string, dst: string, flags?: number]): void;
+  move(req: [src: string, dst: string]): void;
   rmdir(req: [filename: string, opts?: opts.IRmdirOptions]): void;
   rm(req: [filename: string, opts?: opts.IRmOptions]): void;
   mkdir(req: [filename: string, opts?: misc.TMode | opts.IMkdirOptions]): string | undefined;
diff --git a/src/fsa-to-node/worker/FsaNodeSyncWorker.ts b/src/fsa-to-node/worker/FsaNodeSyncWorker.ts
index b2cf9f90d..fabcbe870 100644
--- a/src/fsa-to-node/worker/FsaNodeSyncWorker.ts
+++ b/src/fsa-to-node/worker/FsaNodeSyncWorker.ts
@@ -122,24 +122,24 @@ export class FsaNodeSyncWorker {
         kind: handle.kind,
       };
     },
-    access: async ({ filename, mode }): Promise<void> => {
+    access: async ([filename, mode]): Promise<void> => {
       await this.fs.promises.access(filename, mode);
     },
-    readFile: async ({ filename, opts }): Promise<Uint8Array> => {
+    readFile: async ([filename, opts]): Promise<Uint8Array> => {
       const buf = (await this.fs.promises.readFile(filename, { ...opts, encoding: 'buffer' })) as Buffer;
       const uint8 = new Uint8Array(buf, buf.byteOffset, buf.byteLength);
       return uint8;
     },
-    writeFile: async ({ filename, data, opts }): Promise<void> => {
+    writeFile: async ([filename, data, opts]): Promise<void> => {
       await this.fs.promises.writeFile(filename, data, { ...opts, encoding: 'buffer' });
     },
-    appendFile: async ({ filename, data, opts }): Promise<void> => {
+    appendFile: async ([filename, data, opts]): Promise<void> => {
       await this.fs.promises.appendFile(filename, data, { ...opts, encoding: 'buffer' });
     },
-    copy: async ({ src, dst, flags }): Promise<void> => {
+    copy: async ([src, dst, flags]): Promise<void> => {
       await this.fs.promises.copyFile(src, dst, flags);
     },
-    move: async ({ src, dst }): Promise<void> => {
+    move: async ([src, dst]): Promise<void> => {
       await this.fs.promises.rename(src, dst);
     },
     rmdir: async ([filename, options]): Promise<void> => {