karma-remap-coverage

Karma reporter that remaps Istanbul coverage reports to original source code using source maps, enabling accurate coverage for transpiled languages like TypeScript, ES6/7 with Babel, or JSX. Currently at v0.1.5, last released in 2017, with no further updates. Works in watch mode and stores interim coverage in memory (via karma-coverage's 'in-memory' type) to avoid temporary files. Integrates with webpack and other bundlers that produce source maps. Alternatives: karma-coverage-istanbul-reporter, karma-typescript's built-in coverage.