Function createRunnerFunction

packages/plugin-coverage/src/lib/runner/runner.ts:12–52

(
  config: FinalCoveragePluginConfig,
)

import { lcovResultsToAuditOutputs } from './lcov/lcov-runner.js';

export function createRunnerFunction(
  config: FinalCoveragePluginConfig,
): RunnerFunction {
  return async () => {
    const {
      reports,
      coverageToolCommand,
      continueOnCommandFail,
      coverageTypes,
    } = config;

    // Run coverage tool if provided
    if (coverageToolCommand == null) {
      logger.info(
        'No test command provided, assuming coverage has already been collected',
      );
    } else {
      logger.info('Executing test command to collect coverage ...');
      const { command, args } = coverageToolCommand;
      try {
        await executeProcess({ command, args });
      } catch {
        if (!continueOnCommandFail) {
          throw new Error(
            'Running coverage tool failed. Make sure all your tests are passing.',
          );
        }
      }
    }

    // Calculate coverage from LCOV results
    const auditOutputs = await lcovResultsToAuditOutputs(
      reports,
      coverageTypes,
    );

    logAuditOutputs(auditOutputs);

    return auditOutputs;
  };
}

function logAuditOutputs(auditOutputs: AuditOutputs): void {
  logger.info(