haldarmahesh

import React from "react";
import { useForm } from "react-hook-form";

function onSubmitForm(formData) {
  alert("Hi your phone number is: " + formData.phoneNumber);
}

export default function MyForm() {
  const { register, handleSubmit } = useForm();
  return (

haldarmahesh

class MyFrom extends Component {
  constructor(props) {
    super(props);
    this.state = {phoneNumber: ''};

    this.handleChangePhoneNumber = this.handleChangePhoneNumber.bind(this);
    this.handleSubmit = this.handleSubmit.bind(this);
  }

  handleChangePhoneNumber(event) {

haldarmahesh

import winston from 'winston';
const logger = winston.createLogger({
  level: 'info',
  format: winston.format.json(),
  transports: [
    //
    new winston.transports.File({ filename: 'stdout.log' })
  ]
});

haldarmahesh

// log setup
import winston from 'winston';
const transports = {
  console: new winston.transports.Console({ level: 'warn' }),
};

const logger = winston.createLogger({
  transports: [transports.console, transports.file]
});

haldarmahesh

import logger from '../logSetup';
processLoan(id: number, userId: number) {
    try {
        getLoanDeatilsById()
    } catch(error) {
        log.error(`Failed to do getLoanDetails with id ${id} hence throwing error`, error);
        // good example: provide what failed, and how you are handling. 
        // e.g here on fail I am throwing
        throw error;
    }

haldarmahesh

import logger from '../logSetup';
processLoan(id: number, userId: number) {
    try {
        getLoanDeatilsById()
    } catch(error) {
        log.error(`Failed to do getLoanDetails with id ${id}, ignoring it and trying to getLoanDetailsByUserId`, error);
        // good example: provide what failed, and how you are handling. 
        // e.g here on fail I am trying to call other function
        getLoanDetailsByUserId();
    }

haldarmahesh

import logger from '../logSetup';
createUser() {
  logger.debug(">>>> Entering createUser");

  // ... process

  logger.debug("Saving user loan {}", userInfoRepository.save(userInfo)) // don't do this

  return true;
}

haldarmahesh

import logger from '../logSetup';
processLoan(...) {
    logger.debug(">>>> Entering processLoan()");
    
    // ... process

    logger.debug(`Processing user loan with id ${userService.getUser().getId()}`);
    // this might throw error, when getUser returns undefined

    logger.debug("<<<< Exiting processLoan()");

haldarmahesh

import logger from '../logSetup';
getInstallment(month: number, count: number ): number {
    logger.debug(`>>>> Entering getInstallment(month = ${month}, count= ${count}`);

    // process

    const installment: number = 3;
    log.debug("<<<< Exiting getIntallment()");
    return installment;
}

haldarmahesh

// REST implementation for getEmployeeById

router.get('/api/employees/:id', (req, res) => {
  const employeeId = req.params.id;
  return res.json(employeeService.getById(employeeId));
});