supertokens-js-override

import { buildOverride } from 'supertokens-js-override'; // Imagine an 'original' service with a method we want to change const originalService = { getData: (id: string) => `Fetching data for ${id} from original source.`, processInput: (input: string) => `Processing: ${input.toUpperCase()}.`, authCheck: () => true }; // Define an override that modifies 'getData' and adds a custom log to 'processInput' const overriddenService = buildOverride(originalService, (originalImplementation) => { return { ...originalImplementation, getData: (id: string) => { console.log(`[Override] Intercepting data fetch for ID: ${id}`); if (id === 'special-id') { return 'Custom data for special-id!'; } // Call the original implementation for other IDs return originalImplementation.getData(id); }, processInput: (input: string) => { console.log(`[Override] Input received: ${input}`); return originalImplementation.processInput(input); } }; }); console.log(overriddenService.getData('user-123')); // Expected: [Override] Intercepting data fetch for ID: user-123\nFetching data for user-123 from original source. console.log(overriddenService.getData('special-id')); // Expected: [Override] Intercepting data fetch for ID: special-id\nCustom data for special-id! console.log(overriddenService.processInput('hello world')); // Expected: [Override] Input received: hello world\nProcessing: HELLO WORLD. console.log(overriddenService.authCheck()); // Expected: true (original method is preserved)