exportsdefault

ExportsDefault is a feature in the TypeScript programming language that allows a module to specify a single default export. This default export can be any value, such as a function, an object, or a primitive type. The primary purpose of a default export is to simplify the import syntax for consumers of the module, as it allows them to import the default export without needing to use curly braces or specify a name.

When a module uses the export default syntax, it designates that value as the default export for the module. This means that when another module imports from this module, it can use a simpler import statement. For example, if a module exports a function as the default export, another module can import it without needing to know the name of the function.

Here is an example of how to use export default in TypeScript:

// moduleA.ts

function myFunction() {

console.log("Hello, world!");

}

export default myFunction;

// moduleB.ts

import myFunction from './moduleA';

myFunction(); // Outputs: Hello, world!

In this example, moduleA exports myFunction as the default export. ModuleB then imports myFunction from moduleA using a simple import statement, without needing to specify the function name in curly braces.

The use of export default is particularly useful in scenarios where a module is intended to export a single primary value, such as a class, a function, or an object. It helps to keep the import statements clean and concise, making the code easier to read and maintain. However, it is important to note that a module can only have one default export. If a module needs to export multiple values, it should use named exports instead.