Uncaught Syntaxerror: The Requested Module ‘/Src/Router/Index.Js’ Does Not Provide An Export Name Default Top 9 Favorites

This error occurs when attempting to import a default export from a module that does not have a default export.

The default keyword in JavaScript is used to import a single value from a module that is marked as the default export. If the module you are trying to import does not have a default export, then you will get an error message like the one you have described.

To fix this error, you need to check the module that you are trying to import and see if it has a default export. If it does not have a default export, then you need to import the specific named exports that are available in the module.

For example, let’s say that you have a module called myModule that looks like this:

javascript
// myModule.js
export const foo = 1;
export const bar = 2;

If you try to import the default export from this module, like this:

python
import myModule from './myModule';

You will get the error message you described. Instead, you need to import the named exports like this:

python
import { foo, bar } from './myModule';

This will import the foo and bar variables from the myModule module.

In ES6, module exports can be done using the export keyword. Here are the different ways to use module exports in ES6:

1. Exporting a named function or variable:

js
export function add(a, b) {
  return a + b;
}

export const pi = 3.14159;

1. Exporting multiple named functions or variables at once:

js
function add(a, b) {
  return a + b;
}

const pi = 3.14159;

export { add, pi };

1. Exporting a default function or variable:

js
export default function add(a, b) {
  return a + b;
}

export default const pi = 3.14159;

1. Exporting a class:

js
export class Person {
  constructor(name, age) {
    this.name = name;
    this.age = age;
  }

  greet() {
    console.log(`Hello, my name is ${this.name} and I am ${this.age} years old`);
  }
}

To import the exported modules in another file, you can use the import keyword as follows:

js
import { add, pi } from './math.js';
import add from './math.js'; // for default export
import { Person } from './person.js';

console.log(add(2, 3));
console.log(pi);

const john = new Person('John', 30);
john.greet();

export default is a keyword in JavaScript used to export a module as the default export of a module.

A class in JavaScript is a type of object constructor that allows you to create a blueprint for creating objects with specific properties and methods.

When you export a class using export default, it means that the class is the default export of the module. This means that when you import the module in another file using import, you can give the class any name you want and you will be importing the class itself as the default export.

Here’s an example of how to export a class using export default:

javascript
// MyClass.js
export default class MyClass {
  constructor(prop) {
    this.prop = prop;
  }

  myMethod() {
    console.log(this.prop);
  }
}

In another file, you can import the MyClass using import and give it a different name if you want:

javascript
// main.js
import CustomClassName from './MyClass.js';

const instance = new CustomClassName('Hello World');
instance.myMethod(); // Output: "Hello World"

Note that you can only have one default export per module.

In JavaScript, both module.exports and exports are used to export values from a module to other parts of the application. However, there are some differences between the two:

module.exports is the actual object that is returned as the result of a require call. When you assign a value to module.exports, you are overwriting the entire object that will be returned when the module is required.

exports is a shorthand way of exporting values from a module. When you assign a value to exports, you are adding that value as a property of the module.exports object. In other words, exports is just a reference to module.exports.

Here’s an example to illustrate the difference:

javascript
// exporting a single value using module.exports
module.exports = 42;

// exporting multiple values using exports
exports.foo = 'foo';
exports.bar = 'bar';

In the first example, the module will export a single value (42) when required. In the second example, the module will export an object with two properties (foo and bar) when required.

Note that if you use exports to export values from a module, you should not assign a new value to exports directly, as this will break the reference to module.exports. Instead, you should only use exports to add properties to module.exports.