Why Does My React App Throw an \'Invariant Violation: Element type is invalid\' Error?

Unveiling the Element Type Invalidity: Resolving React's Mysterious Error

"Uncaught Error: Invariant Violation: Element type is invalid...": a cryptic message that has plagued many React developers. This error often points to an invalid element type, where a string (for built-in components) or a class/function (for composite components) is expected.

Understanding the Error

In React, all components are essentially functions or classes that take props as input and return a React element. React's Virtual DOM ensures that only necessary changes are applied to the real DOM, optimizing performance. However, when the element type is invalid, React fails to create the Virtual DOM, resulting in the frustrating error message.

Root Cause: The Esoteric Importance of Curly Braces

In the provided code, the issue lies in importing components using Webpack. The error occurs when using curly braces in the import statement:

import {MyComponent} from '../components/xyz.js';

Instead, the following format should be used:

import MyComponent from '../components/xyz.js';

The curly braces in the former approach create a binding to the module's default export. However, React components require the class or function itself to be imported. By removing the curly braces, the correct component is imported and instantiated.

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