Encountering an npm error while setting up a new react project using create-react-app

Hello and thank you for taking the time to read this post. I am currently working with React and trying to learn more about ReactJS. However, when I try to install a new React app, I encounter an error when attempting to uninstall the project. Can anyone help me diagnose my problem?

Here is the error message in the Command Terminal:

npm ERR! Unexpected end of JSON input while parsing near '...9.1","tslint-config -p'

npm ERR! A complete log of this run can be found in: npm ERR!
C:\Users\john\AppData\Roaming\npm-cache_logs\2019-12-26T01_36_25_1 39Z-debug.log 

npm install --save @testing-library/react@^9.3.2
  @testing-library/jest-dom@^4.2 .4 @testing-library/user-event@^7.1.2
failed

reactjsnpm

Answer №1

It seems like the issue might be related to the version.

If you have previously installed create-react-app globally using npm install -g create-react-app, we suggest uninstalling the package with 

npm uninstall -g create-react-app
to ensure npx always utilizes the most recent version.

Getting Started Quickly

npx create-react-app my-app
cd my-app
npm start

For further clarification, refer to this reactjs guide.

Answer №2

I encountered a similar issue multiple times. I was able to resolve it by executing the commands below:

npm init
npm cache clean force
npx create-react-app my-app
cd my-app
npm start

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Mastering the Art of Utilizing Box Component Spacing Props

Easy margin and spacing adjustments are possible with the help of Material-UI. They provide shortcuts that eliminate the need to individually style components with CSS. In the code snippet below, it's important to note that specifying the measuremen ...

cssreactjsmaterial-ui

What causes the occurrence of the Error [ERR_HTTP_HEADERS_SENT]?

Encountering an issue when adding authentication to my project. This particular controller relies on a middleware for user authentication. exports.fetchOne = (req, res) => { const _id = req.params.id; console.log("fetch One"); try { ...

reactjsnode.jsexpressmongoosemern

What are the steps for incorporating Bootstrap with React.js?

After installing the bootstrap dependency in /node_modules/bootstrap using npm, I included a CDN link in my index.html file. However, I am facing issues with certain tags that are not recognized, and I'm unsure if these tags are part of Bootstrap or ...

reactjsnpmbootstrap-4

Is there a way to activate and change the color of a Radio Button when it is clicked?

Is there a way to change the background-color of a clicked Radio Button so it appears highlighted? For example, when the first choice is clicked, I want it to stand out visually. This is the current UI displaying the choices: https://i.stack.imgur.com/a7 ...

javascriptreactjsmaterial-ui

Having trouble updating the component's value using useState in code

Struggling to dynamically change the state using the useState hook. Here is how it's currently defined: const [data, setData] = React.useState({ text: "Hello StackOverflow!", someNumber: 2 }); To test, I set up an interval that increments som ...

reactjsmaterial-ui

transferring a function from a main component to a nested component using swipeout functionality in react-native

I am attempting to transfer a function from a parent container to a child container within react native. The user is presented with a list of items on the screen, where they can swipe the list to reveal additional options. Child import React from &ap ...

javascriptreactjsreact-native

Utilizing MaterialUI icons effectively in CoreUI React

To incorporate Material UI icons into a React dashboard template of CoreUI, I added @mui/material and @mui/icons-material by running the following commands: npm install @mui/material @emotion/react @emotion/styled And npm install @mui/icons-material This ...

reactjsmaterial-uicore-ui

Utilizing the arr.push() method to replace an existing value within an array with a new object, rather than simply adding a new

Seeking help to dynamically render a list of components that should expand or shrink based on values being added or removed from an array of custom objects. However, facing an issue where pushing a value into the array only replaces the previous value inst ...

javascriptarraysreactjstypescript

The dependency that was installed in the node_modules directory is now showing as missing the

I have encountered an issue with 2 TS packages. The first package, project-1, is installed as a dependency in the second package, project-2. While I am able to import and access all type definitions of project-1 in project-2, the dependencies (node_modules ...

node.jstypescriptnpm

What is the best way to retrieve the primaryText value within the onChange function of a SelectField component?

I am trying to access the primaryText from the onChange method of SelectField. However, onChange only provides (event,index,value). Here is my code snippet: <SelectField value={props.value} onChange={this.handleChange}> {props.opt ...

reactjsmaterial-ui

In search of assistance with a persistent react.js error plaguing my work

I keep encountering an error whenever I run npm start on a new project. Does anyone have any insight on how to resolve this issue? The problem might lie within the project dependency tree rather than being a bug in Create React App. Here is what you can ...

javascriptreactjsnpm

Exciting new venture with GULP

After creating a project using GULP and downloading numerous modules with the NPM command, I'm uncertain about how to proceed with a new project. Should I simply copy and paste my old project files including "gulpfile.js", "package.json", and the "nod ...

npmgulpworkflow

Leveraging onClick in combination with React's AutoBind

Just started learning React, so please point me towards documentation if I missed anything. I'm attempting to initiate an Ajax call using the onClick method following a tutorial on React. See the code snippet below. doSomething: function() { // ...

javascriptajaxreactjs

using a variable object to load, access data, and handle errors through mutations

element, I have incorporated two distinct mutations in a single react component: const [get_items, { error, loading, data }] = useMutation(GET_ITEMS); const [add_to_cart] = useMutation(ADD_TO_CART); To streamline and access both components' error, ...

javascriptreactjsgraphqlapolloapollo-client

Steps for creating the PKG_CONFIG_PATH environmental variable

Planning to set up the node-fprint package on my Lubuntu 20.04 system. Unfortunately, upon running the installation command in the terminal, I encountered an "error" message: The following error appeared: Package libfprint was not found in the pkg-config ...

node.jsreactjs

The conflict between Material UI's CSSBaseline and react-mentions is causing issues

Wondering why the CSSBaseline of Material UI is causing issues with the background color alignment of React-mentions and seeking a solution (https://www.npmjs.com/package/react-mentions) Check out this setup: https://codesandbox.io/s/frosty-wildflower-21w ...

javascripthtmlcssreactjsmaterial-ui

The Typescript compiler has trouble locating the definition file for an npm package

Recently, I released an npm package that was written in typescript. However, I have been facing difficulties in getting the definition recognized by typescript (webback and vscode). The only workaround that has worked for me so far is creating a folder wit ...

typescriptnpm

SystemJS could not locate the root directory for RxJS

There seems to be an issue with SystemJS loading rxjs modules on Windows, as it throws a 404 Not Found error on the rxjs directory. This problem does not occur on OSX, and all modules are up to date. GET http://localhost:8080/node_modules/rxjs/ 404 (Not F ...

javascripttypescriptnpmrxjssystemjs

The environment variable was not properly included in the container's environment

Behold, my Dockefile FROM ubuntu:latest MAINTAINER mazzy WORKDIR /tmp RUN apt-get update && apt-get install -y wget RUN wget http://nodejs.org/dist/v0.12.0/node-v0.12.0-linux-x64.tar.gz RUN tar xvf node-v0.12.0-linux-x64.tar.gz RUN cp -r node- ...

node.jsnpmenvironment-variablesdockerdockerfile

Guide on incorporating ReactJS Material UI via a CDN using Webpack's external dependencies

Issue at Hand: I am facing a challenge in developing a website (web app) using React and Material UI. Everything works smoothly when utilizing npm. However, encountering an error with Material UI when attempting to link them as externals and import throug ...

reactjswebpackmaterial-uicdn