Es2015 module syntax is preferred over namespaces

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In ES2015, module syntax is recommended over namespaces for organizing and structuring JavaScript code. Modules provide a better way of bundling related functionality and making it reusable across different parts of the application.

With module syntax, code can be split into multiple files, where each file represents a separate module. Each module can export certain variables, functions, or classes that it wants to expose to other modules, and it can also import functionality from other modules that it depends on.

Here’s an example to illustrate the usage of module syntax: 

// math.js
export function add(x, y) {
  return x + y;
}

export function subtract(x, y) {
  return x - y;
}
  
// calculator.js
import { add, subtract } from './math';

function calculate() {
  const result = add(5, 3);
  console.log(result);
}

calculate();

In the above example, we have two separate modules: ‘math.js’ and ‘calculator.js’. The ‘math’ module exports two functions, ‘add’ and ‘subtract’, using the ‘export’ keyword. The ‘calculator’ module then imports these functions using the ‘import’ statement and uses them to perform a calculation in the ‘calculate’ function.

This modular approach provides a clear separation of concerns and makes it easier to manage dependencies between different parts of the application. It also allows for better code organization and reusability, as modules can be easily reused in different projects or scenarios.

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