How to use youch - 8 common examples

handler: handler(async (req: IncomingMessage): Promise => {
        const youch = new Youch(err, req);
        const json = await youch.toJSON();
        console.log(forTerminal(json)); // eslint-disable-line
        return youch.toHTML();
      }),
      path: '*',

const youchPlugin = (fun: any): any => async (req: IM, res: SR): Promise => {
  try {
    return await fun(req, res);
  } catch (err) {
    const youch = new Youch(err, req);
    const json = await youch.toJSON();
    console.log(forTerminal(json)); // eslint-disable-line
    return youch.toHTML();
  }
};

this.server.use(async (err, req, res, next) => {
      if (process.env.NODE_ENV === 'development') {
        const errors = await new Youch(err, req).toJSON(); // toHTML();

        return res.status(500).json(errors);
      }

      return res.status(500).json({ error: 'Internal server error' });
    });
  }

this.server.use(async (err, req, res, next) => {
      if (process.env.NODE_ENV === 'development') {
        const errors = await new Youch(err, req).toJSON();
        // you have an alternativo toHTML also
        // we prefer toJSON because in this case we are working over an API

        return res.status(500).json(errors);
      }

      return res.status(500).json({ error: 'Internal server error' });
    });
  }

export async function renderTestEntity(
    entity: TestContextEntity,
    tick: number = 0,
    ident: number = 0
) {
    const defaultName = '';
    const identifier = `${entity.kind} ${entity.id || defaultName}`;
    const spinnerContent =  ['◜','◠','◝','◞','◡','◟'];
    const timeSinceStarted = entity.isStarted() ? (((new Date().getTime()) - (entity.startDate.getTime())) / 1000).toFixed(0) : '';
    const error = entity.error ? EOL + await new Youch(entity.error, {}).toJSON().then(forTerminal) : '';
    const color = chalk.bold.green;
    const main = !entity.isFinished()
        ? chalk`${spinnerContent[tick % spinnerContent.length]} {bold.yellow RUNNING} ${identifier} {gray for} ${timeSinceStarted.toString()}`
        : !!entity.error
            ? chalk`{bold.red ✗ ERROR} ${identifier} {gray after} ${(entity.duration || NaN).toString()}` + error
            : color(` ✓ ${getReadableStateName(entity.state)} `) + chalk`${identifier} {gray after} ${(entity.duration || NaN).toString()}`;
    let addition = '';
    if(entity instanceof TestSuiteContext) {
        addition = await renderArray(entity.testCases, tc => renderTestEntity(tc, tick, 1));
    }
    if(entity instanceof TestCaseContext) {
        addition = await renderArray(entity.testSteps, ts => renderTestEntity(ts, tick, 2));
    }
    return `${createIdent(ident)}${main}${EOL}${addition}`;
}

async renderError(error, req) {
    if (process.env.NODE_ENV !== 'production') {
      const youch = new Youch(error, req);
      return youch.toHTML();
    } else {
      const { readFile } = require('fs-extra');
      return readFile(this.options.path, 'utf-8');
    }
  },
};

this.server.use(async (err, req, res, next) => {
      if (process.env.NODE_ENV === 'development') {
        const errors = await new Youch(err, req).toJSON();

        return res.status(500).json(errors);
      }

      return res.status(500).json({ error: 'Internal server error' });
    });
  }