message: Output test coverage
diff: @@ -3,5 +3,7 @@ module.exports = {
  testEnvironment: 'node',
  rootDir: '.',
  testMatch: ['<rootDir>/test/**/*.test.ts'],
  - moduleFileExtensions: ['ts', 'js']
  + moduleFileExtensions: ['ts', 'js'],
  + collectCoverage: true,
  + collectCoverageFrom: ['src/**/*.ts', '!src/logger.ts']
  };
  