Implement comprehensive enhancements: push notifications, export functionality, user profiles, community sharing, offline improvements, analytics, accessibility, testing, and documentation

jest.config.js

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+const nextJest = require('next/jest')
+
+const createJestConfig = nextJest({
+  // Provide the path to your Next.js app to load next.config.js and .env files
+  dir: './',
+})
+
+// Add any custom config to be passed to Jest
+const customJestConfig = {
+  setupFilesAfterEnv: ['<rootDir>/jest.setup.js'],
+  moduleNameMapping: {
+    // Handle module aliases (this will be automatically configured for you based on your tsconfig.json paths)
+    '^@/(.*)$': '<rootDir>/src/$1',
+  },
+  testEnvironment: 'jest-environment-jsdom',
+}
+
+// createJestConfig is exported this way to ensure that next/jest can load the Next.js config which is async
+module.exports = createJestConfig(customJestConfig)