TypeScript jest-util.clearLine函數代碼示例

export async function run(maybeArgv?: Array<string>, project?: Config.Path) {
  try {
    const argv: Config.Argv = buildArgv(maybeArgv);

    if (argv.init) {
      await init();
      return;
    }

    const projects = getProjectListFromCLIArgs(argv, project);

    const {results, globalConfig} = await runCLI(argv, projects);
    readResultsAndExit(results, globalConfig);
  } catch (error) {
    clearLine(process.stderr);
    clearLine(process.stdout);
    if (error.stack) {
      console.error(chalk.red(error.stack));
    } else {
      console.error(chalk.red(error));
    }

    exit(1);
    throw error;
  }
}

 onRunComplete() {
   this.forceFlushBufferedOutput();
   this._status.runFinished();
   process.stdout.write = this._out;
   process.stderr.write = this._err;
   clearLine(process.stderr);
 }

const showTestPathPatternError = (testPathPattern: string) => {
  clearLine(process.stdout);

  console.log(
    chalk.red(
      `  Invalid testPattern ${testPathPattern} supplied. ` +
        `Running all tests instead.`,
    ),
  );
};

  private async _addUntestedFiles(
    globalConfig: Config.GlobalConfig,
    contexts: Set<Context>,
  ): Promise<void> {
    const files: Array<{config: Config.ProjectConfig; path: string}> = [];

    contexts.forEach(context => {
      const config = context.config;
      if (
        globalConfig.collectCoverageFrom &&
        globalConfig.collectCoverageFrom.length
      ) {
        context.hasteFS
          .matchFilesWithGlob(globalConfig.collectCoverageFrom, config.rootDir)
          .forEach(filePath =>
            files.push({
              config,
              path: filePath,
            }),
          );
      }
    });

    if (!files.length) {
      return;
    }

    if (isInteractive) {
      process.stderr.write(
        RUNNING_TEST_COLOR('Running coverage on untested files...'),
      );
    }

    let worker: CoverageWorker | Worker;

    if (this._globalConfig.maxWorkers <= 1) {
      worker = require('./coverage_worker');
    } else {
      worker = new Worker(require.resolve('./coverage_worker'), {
        exposedMethods: ['worker'],
        maxRetries: 2,
        numWorkers: this._globalConfig.maxWorkers,
      });
    }

    const instrumentation = files.map(async fileObj => {
      const filename = fileObj.path;
      const config = fileObj.config;

      if (!this._coverageMap.data[filename] && 'worker' in worker) {
        try {
          const result = await worker.worker({
            config,
            globalConfig,
            options: {
              ...this._options,
              changedFiles:
                this._options.changedFiles &&
                Array.from(this._options.changedFiles),
            },
            path: filename,
          });

          if (result) {
            this._coverageMap.addFileCoverage(result.coverage);

            if (result.sourceMapPath) {
              this._sourceMapStore.registerURL(filename, result.sourceMapPath);
            }
          }
        } catch (error) {
          console.error(
            chalk.red(
              [
                `Failed to collect coverage from ${filename}`,
                `ERROR: ${error.message}`,
                `STACK: ${error.stack}`,
              ].join('\n'),
            ),
          );
        }
      }
    });

    try {
      await Promise.all(instrumentation);
    } catch (err) {
      // Do nothing; errors were reported earlier to the console.
    }

    if (isInteractive) {
      clearLine(process.stderr);
    }

    if (worker && 'end' in worker && typeof worker.end === 'function') {
      worker.end();
    }
  }