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// src/middleware/errorHandler.js

// Not found middleware
// 404

const notFound = (req, res, next) => {
	const error = new Error(`Not Found - ${req.originalUrl}`);
	res.status(404);

	// pass error to the next middleware

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In Class Components

To create the ref

class Forest extends React.Component {
  constructor(props) {
    super(props)
    this.plantRef = React.createRef()
 }

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.Home {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

.HomeContent {
  flex-grow: 1;
}

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upload(files) {
  const config = {
    onUploadProgress: function(progressEvent) {
      var percentCompleted = Math.round((progressEvent.loaded * 100) / progressEvent.total)
      console.log(percentCompleted)
    }
  }

  let data = new FormData()
  data.append('file', files[0])

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// file: selected/dropped by user

function displayImage(file) {
  const reader = new FileReader()
  reader.readAsDataURL(file) // reader.result will be `data:__`
  
  reader.onload = (e) => imageRef.current.src = reader.result
  
  console.log(reader.result) // returns `data:__` which is URL of files data
}

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{
  "debug.javascript.codelens.npmScripts": "never",
}

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import React, { Component, createRef } from "react";

class Input extends Component {
	constructor(props) {
		super(props);
		this.state = {
			name: "",
			copyMsg: "Copy to Clipboard",
			isCopied: false,
		};

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ERROR #85923  GRAPHQL

There was an error in your GraphQL query:

Cannot query field "allExampleCode" on type "Query".

If you don't expect "allExampleCode" to exist on the type "Query" it is most likely a typo.
However, if you expect "allExampleCode" to exist there are a couple of solutions to common problems:

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// Creating a passport strategy
const JwtStrategy = require("passport-jwt").Strategy;
const ExtractJwt = require("passport-jwt").ExtractJwt;
const mongoose = require("mongoose");

// Get the user model
const User = mongoose.model("users");
const keys = require("../config/keys");

const opts = {};

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const Validator = require("validator");
const isEmpty = require("./is-empty");
// we cant use isEmpty from validator pkg as it needs its param to be a string

// data is req.body
module.exports = function validateRegisterInput(data) {
	let errors = {};

	data.name = isEmpty(data.name) ? "" : data.name;
	data.email = isEmpty(data.email) ? "" : data.email;