Enable localStorage based on "userAccountSaveDataSize"

.changeset/swift-camels-think.md

@@ -0,0 +1,5 @@
+---
+"@nx.js/runtime": patch
+---
+
+Enable `localStorage` based on "userAccountSaveDataSize"

packages/runtime/src/storage.ts

@@ -2,7 +2,7 @@ import { $ } from './$';
 import { readFileSync, removeSync, writeFileSync } from './fs';
 import { URL } from './polyfills/url';
 import { Profile } from './switch/profile';
-import { Application, getSaveDataOwnerId } from './switch/ns';
+import { Application } from './switch/ns';
 import { INTERNAL_SYMBOL } from './internal';
 import {
 	def,
@@ -121,12 +121,15 @@ Object.defineProperty(globalThis, 'localStorage', {
 	get() {
 		const { self } = Application;
 
-		// If the app's NACP dpes not contain a save data owner ID,
+		// If the app's NACP does not define a `userAccountSaveDataSize`,
 		// then `localStorage` returns `undefined`. This can be useful
 		// to prevent the profile selector from being shown when 3rd
 		// party modules unwantingly attempt to access `localStorage`.
-		const saveDataOwnerId = getSaveDataOwnerId(self);
-		if (!saveDataOwnerId) {
+		const userAccountSaveDataSize = new DataView(self.nacp).getBigUint64(
+			0x3080,
+			true,
+		);
+		if (!userAccountSaveDataSize) {
 			Object.defineProperty(globalThis, 'localStorage', { value: undefined });
 			return;
 		}

packages/runtime/src/switch/index.ts

@@ -17,7 +17,7 @@ export * from '../fs';
 export * from './inspect';
 export * from './savedata';
 export * from './nifm';
-export { Application } from './ns';
+export * from './ns';
 export * from './irsensor';
 export * from './profile';
 export * from './album';

packages/runtime/src/switch/ns.ts

@@ -19,9 +19,6 @@ function _init() {
 	init = true;
 }
 
-export const getSaveDataOwnerId = (app: Application) =>
-	new DataView(app.nacp).getBigUint64(0x3078, true);
-
 /**
  * Represents an installed application (game) on the console,
  * or a homebrew application (`.nro` file).
@@ -172,7 +169,7 @@ export class Application {
 	}
 
 	filterSaveData(fn?: (saveData: SaveData) => boolean) {
-		const id = getSaveDataOwnerId(this);
+		const id = new DataView(this.nacp).getBigUint64(0x3078, true);
 		return Iterator.from(SaveData).filter((s) => {
 			if (s.applicationId !== id) return false;
 			return fn ? fn(s) : true;