message: Use path.join instead of concatenating strings
diff: @@ -204,7 +204,7 @@ export function getTSConfig(globals, collectCoverage: boolean = false) {
  config = readCompilerOptions(configPath);
  - if (configFileName === getStartDir() + '/tsconfig.json') {
  + if (configFileName === path.join(getStartDir(), 'tsconfig.json')) {
  // hardcode module to 'commonjs' in case the config is being loaded
  // from the default tsconfig file. This is to ensure that coverage
  // works well. If there's a need to override, it can be done using
  