chore: project scaffolding

jest.config.ts

@@ -0,0 +1,10 @@
+import type { Config } from 'jest';
+
+const config: Config = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+  testMatch: ['**/src/__tests__/**/*.test.ts'],
+  clearMocks: true,
+};
+
+export default config;