Category React

JavaScript, React

[Solved] Expected an assignment or function call and instead saw an expression no-unused-expressions in reactJS

Arrow functions occasionally needed return so, I Put your opened bracket on the same line after => lamda expression, and return JSX syntax directly...

October 10, 2021

React, Redux

[Solved] Error: The slice reducer for key “communicationStatus” returned undefined during initialization. If the state passed to the reducer is undefined

When I start to debug the code, I understand that state is undefined, so I solved the below issue in two ways. 1.Return an undefined state={} 2. Return state=default state

September 20, 2021

React, Redux

[Solved] Error: Actions must be plain objects. Instead, the actual type was: ‘function’. You may need to add middleware to your store setup to handle dispatching other values, such as ‘redux-thunk’ to handle dispatching functions.

I just have forgotten to call my action function with parentheses. a simple mistake was throwing a big error.

September 14, 2021
react-redux

React

[Solved] Warning: Received `true` for a non-boolean attribute `name`. If you want to write it to the DOM, pass a string instead: name=”true” or name={value.toString()} in reactJs

React is treating it as a prop with Boolean type. So, that's the reason I was getting the below error.

September 14, 2021
props

NodeJS, React

[Solved] Test suite failed to run Your test suite must contain at least one test. at node_modules/@jest/core/build/TestScheduler.js:242:24 at asyncGeneratorStep (node_modules/@jest/core/build/TestScheduler.js:131:24)

I started testing my reducer functions and the components of my react project by using built-in Jest library, when I was started to create some test files to the reducers pure functions, I was facing the issue i.e I mentioned…

August 21, 2021
node modules, react-test

React

[Solved] How to pass data from child component to its parent in ReactJS. Received an Uncaught TypeError: this.props.onChange is not a function. When Pass the values from Child Component to its Parent Component.

Problem : When I am trying to send variable data from child component class to its parent class. I’m getting the below error Uncaught TypeError: this.props.onChange is not a function Parent Component: Child component Solution: Pass the values from Child…

August 14, 2021
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Refs

React, Redux

How to use redux in reactJS project? An easy way for state management using react-redux in ReactJS application.

In this article, we will understand How to use redux in reactJS Why redux is the best choice for react application state management How to configure react-redux for state management in our react applications, lets get started… When and Why…

August 14, 2021
react-redux, state-management

Angular, NodeJS, React, vueJS

[Solved] NodeJs The node identifier for {My machine name} is {some alphanumeric value}.

CA Harvest software will conflict with node.exe. so, pass the nodeJS batch file so that it will set your command line to nodeJS environment without breaking my Harvest SCM

May 23, 2021

React

[Solved] Error: PostCSS plugin autoprefixer requires PostCSS 8.
Migration guide for end-users:
https://github.com/postcss/postcss/wiki/PostCSS-8-for-end-users
at Processor.normalize (\node_modules\postcss-loader\node_modules\postcss\lib\processor.js:153:15)
at new Processor (\node_modules\postcss-loader\node_modules\postcss\lib\processor.js:56:25)
at postcss

you must manually upgrade the packages. A project based on webpack needs just to update those dependencies. autoprefixer@^10.0.2 & postcss@8.1.7 & postcss-loader@4.0.

May 2, 2021
node modules

React

[Solved] Error: Cannot find module ‘node_modules\react-scripts\bin\react-scripts.js’
[90m at Function.Module._resolveFilename (internal/modules/cjs/loader.js’:966:15)[39mThis is probably not a problem with npm. There is likely additional logging output above.

If you have an '&' in your project's path you will run into this issue, it got resolved after Changing the path or try to execute command

May 2, 2021