Jestjs 未找到jest lcov结果合并

尝试将覆盖范围与lcov结果合并

/node\u modules/.bin/lcov结果合并覆盖率/parts/***/lcov.info覆盖率/lcov.info

bug获取错误

“lcov-result-MERGE”未被识别为内部或外部命令

jest.config

collectCoverage: true,
coverageReporters: ['lcov', 'text'],
collectCoverageFrom: [
    'packages/**/*.{ts,tsx}',
    '!packages/**/dist/**/*.*',
    '!packages/**/__mocks__/**/*.*',
    '!packages/**/__tests__/**/*.*',
]

我需要安装lcov吗