Operate on a buffer

src/bundle/otto/windows.ts

@@ -1,4 +1,4 @@
-import {mkdir, open, writeFile} from 'node:fs/promises';
+import {mkdir, open, readFile, writeFile} from 'node:fs/promises';
 import {join as pathJoin, basename, dirname} from 'node:path';
 
 import {trimExtension} from '../../util';
@@ -76,10 +76,12 @@ export class BundleOttoWindows extends BundleOtto {
 		}
 
 		const machine = v.getUint16(0, true);
+		// eslint-disable-next-line jsdoc/require-jsdoc
+		const res = async () => readFile(projector.path);
 		let launcher = null;
 		switch (machine) {
 			case 0x14c: {
-				launcher = await windowsLauncher('i686', projector.path);
+				launcher = await windowsLauncher('i686', await res());
 				break;
 			}
 			default: {

src/util/windows.ts

@@ -279,12 +279,12 @@ export async function peResourceReplace(
  * Get Windows launcher for the specified type.
  *
  * @param type Executable type.
- * @param resources File to optionally copy resources from.
+ * @param resources Data to optionally copy resources from.
  * @returns Launcher data.
  */
 export async function windowsLauncher(
 	type: string,
-	resources: string | null = null
+	resources: Uint8Array | null = null
 ) {
 	let data;
 	switch (type) {
@@ -304,7 +304,7 @@ export async function windowsLauncher(
 
 	// Read resources from file.
 	const rsrc = NtExecutableResource.from(
-		NtExecutable.from(await readFile(resources), {
+		NtExecutable.from(resources, {
 			ignoreCert: true
 		})
 	);