sridharmallela / karma-typescript-issue

Issue with karma typescript

KARMA TYPESCRIPT ISSUE

How to reproduce the issue

• Clone or Download this project and then install dependencies npm install, this might take few minutes.

• Run npm test will throw an error ERROR [karma-server]: UnhandledRejection TypeError: Cannot read property 'files' of undefined

• Run npm run works will not throw an error.

Analysis

In Report.ts,

  const coverage = that.coverageMap.get(browser);
  const coverageMap = istanbulCoverage.createCoverageMap();
  coverageMap.merge(coverage);

  const sourceMapStore = istanbulSourceMaps.createSourceMapStore();
  const remappedCoverageMap = await sourceMapStore.transformCoverage(coverageMap);

  if (results && config.hasCoverageThreshold && !threshold.check(browser, remappedCoverageMap.map)) {
    results.exitCode = 1;
  }

• remappedCoverageMap returns an instance of Coverage Map, which doesnot have a property map associated.