arifmahmudrana

db.getCollection('search_params')
  .find({ propertyCode: /R.+/ })
  .sort({ propertyCode: -1 })

db.getCollection('search_params').aggregate([
  {
    $match: {
      propertyCode: /^R.+$/,
    },
  },

arifmahmudrana

axios({
  method: 'get',
  url: 'URL',
  params: {
    keyword: 'keyword'
  },
  responseType: 'stream'
})
  .then(response => {
    for (const key in response.headers) {

arifmahmudrana

/* 
 * If used Promise all first error will go to catch block
 *
 * If no error occurs then the resolved values will be an array
   with exact sequence of promise here e.g if run Promise.all([p1, p2, p3])
   output: [ 'one', 'two', 'three' ]
 * 
 * If there is a setTimeout after all setTimeout execution will be done
 * 
 * If there is a setTimeout, setImmediate or setTimeout 0 thoose will be executed after next tick

arifmahmudrana

import { object, string, number, ValidationError } from '@hapi/joi';

const schema = object({
    searchCode: string()
      .required()
      .label('Search code'),
    id: number().required()
  }),
  messages = {
    'alternatives.all': '{{#label}} does not match all of the required types',

arifmahmudrana

abstract class BaseError extends Error {
  abstract status: number;
}

class ValidationError extends BaseError {
  status: number = 422;
  constructor(message?: string) {
    super(message);
    this.name = this.constructor.name;
  }

arifmahmudrana

// example of array flat map alternative

const data = [
    {
        city: [
            {
                country: "Bhutan"
            },
            {
                country: "Bhutan"

arifmahmudrana

POST tasks/_doc
{
  "title": "Goto ICCDRB",
  "description": "I will goto ICCDRB with my mother for her urine test & ultrasonogram test",
  "user": {
    "id": 1,
    "name": "Arif Mahmud Rana",
    "email": "arif_mahmud_rana@hotmail.com"
  }
}

arifmahmudrana

import {array, object, string, validate} from "joi";
const schema = object({
  searchCode: string().required().label('Search code'),
	primaryContact: object({
		mobileNumber: string()
			.regex(/^\+?\d{7,13}$/)
			.error(() => 'You must provide a valid Primary contact mobile number.')
      .required()
      .label('Primary contact mobile number')
  }).required(),

arifmahmudrana

// custom toJSON example object
const a = {
  id: 1,
  name: 'ARIF',
  toJSON() {
    return JSON.stringify({id: this.id})
  }
}
const a = new A();
const b = {...a}

arifmahmudrana

const joi = require("joi");

// const schema = joi.object({
//     roomIds: joi.array()
//         .required()
//         .min(1)
//         .max(6)
//         .sparse()
//         .items(joi.string())
// }).keys({