Chore: Refactor mobile plugin logic into locations more consistent with other parts of the app (#10636)

packages/app-mobile/components/plugins/backgroundPage/pluginRunnerBackgroundPage.ts

@@ -0,0 +1,47 @@
+export { runPlugin, stopPlugin } from './startStopPlugin';
+
+// Old plugins allowed to import legacy APIs
+const legacyPluginIds = [
+	'outline',
+	'ylc395.noteLinkSystem',
+	'com.github.joplin.kanban',
+];
+
+const pathLibrary = require('path');
+const punycode = require('punycode/');
+
+export const requireModule = (moduleName: string, fromPluginId: string) => {
+	if (moduleName === 'path') {
+		return pathLibrary;
+	}
+
+	if (legacyPluginIds.includes(fromPluginId)) {
+		if (moduleName === 'punycode') {
+			console.warn('Requiring punycode is deprecated. Please transition to a newer API.');
+			return punycode;
+		}
+		if (moduleName === 'fs' || moduleName === 'fs-extra') {
+			console.warn('The fs library is unavailable to mobile plugins. A non-functional mock will be returned.');
+			return {
+				existsSync: () => false,
+				pathExists: () => false,
+				readFileSync: () => '',
+				readFile: () => '',
+				writeFileSync: () => '',
+				writeFile: () => '',
+				appendFile: () => '',
+			};
+		}
+		if (moduleName === 'process') {
+			return {};
+		}
+		if (moduleName === 'url') {
+			return { parse: (u: string) => new URL(u) };
+		}
+	}
+
+	throw new Error(`Unable to require module ${moduleName} on mobile.`);
+};
+
+export { default as initializePluginBackgroundIframe } from './initializePluginBackgroundIframe';
+export { default as initializeDialogWebView } from './initializeDialogWebView';