Refactor code structure for improved readability and maintainability

jest.config.js

@@ -1,23 +0,0 @@
-module.exports = {
-  preset: 'ts-jest',
-  testEnvironment: 'node',
-  roots: ['<rootDir>/src', '<rootDir>/tests'],
-  testMatch: ['**/__tests__/**/*.ts', '**/?(*.)+(spec|test).ts'],
-  transform: {
-    '^.+\\.ts$': 'ts-jest',
-  },
-  collectCoverageFrom: [
-    'src/**/*.ts',
-    '!src/**/*.d.ts',
-    '!src/index.ts',
-    '!**/node_modules/**',
-    '!**/examples/**',
-  ],
-  coverageDirectory: 'coverage',
-  coverageReporters: ['text', 'lcov', 'html'],
-  setupFilesAfterEnv: ['<rootDir>/tests/setup.ts'],
-  testTimeout: 30000,
-  verbose: true,
-  clearMocks: true,
-  restoreMocks: true,
-};