import { TurboModule } from '@rnoh/react-native-openharmony/ts'; import type { TurboModuleContext } from '@rnoh/react-native-openharmony/ts'; export class CalculatorModule extends TurboModule { constructor(protected ctx: TurboModuleContext) { super(ctx); } add(a: number, b: number): Promise { return new Promise((resolve) => resolve(a + b)); } }