How to use catchAsync with Class conroller in both function declaration and class fields

controllerExpress.md

How to use catchAsync with Class conroller in both function declaration and class fields

catchAsync function

import { NextFunction, Request, Response } from 'express'

type AsyncFunction = (
  req: Request,
  res: Response,
  next: NextFunction
) => Promise<any>

export const catchAsync = (fn: AsyncFunction) => {
  return (req: Request, res: Response, next: NextFunction) => {
    fn(req, res, next).catch(next)
  }
}

<!--version 2  -->
export function asyncMiddleware(handler: AsyncFunction) {
  return async (req: Request, res: Response, next: NextFunction) => {
    try {
      await handler(req, res, next)
    } catch (error) {
      next(error)
    }
  }
}

class field or function expression version

class UserConroller {
   public register = catchAsync(async (req: Request, res: Response) => {
    const { name, email, password } = req.body

    const userExist = await User.findOne({ email })

    if (!name || !email || !password) {
      res.status(400)
      throw new Error('Please include all fields')
    }

    if (userExist) {
      res.status(400)
      throw new Error('User already exists')
    }

    const user = await User.create({
      name,
      email,
      password: hashSync(password, 10),
    })

    if (user) {
      console.log('new user created')
      res.status(201)
      res.json({
        status: 'success',
        data: { _id: user._id, name: user.name, email: user.email },
      })
    }
  })
}

export default new UserConroller()

function declaration version

class UserConroller {
   public registerUser(req: Request, res: Response, next: NextFunction) {
    return catchAsync(async (req: Request, res: Response) => {
      const { name, email, password } = req.body

      const userExist = await User.findOne({ email })

      if (!name || !email || !password) {
        res.status(400)
        throw new Error('Please include all fields')
      }

      if (userExist) {
        res.status(400)
        throw new Error('User already exists')
      }

      const user = await User.create({
        name,
        email,
        password: hashSync(password, 10),
      })

      if (user) {
        console.log('new user created')
        res.status(201)
        res.json({
          status: 'success',
          data: { _id: user._id, name: user.name, email: user.email },
        })
      }
    })(req, res, next)
}

export default new UserConroller()