ES6 Modules: Should I Export a Single Class or Multiple Individual Methods?

ES6 Modules: Exporting Single Class vs. Multiple Individual Methods

Problem:

When exporting multiple methods from an ES6 module, developers face two options:

1. Exporting a single class of static methods
2. Exporting individual methods separately

Answer:

1. Class Export vs. Object Module:

While a class of static methods may initially seem appropriate, it can be considered a "code smell." Instead, it's recommended to export a module object containing the individual methods. This eliminates the unnecessary class structure and provides a more concise approach.

2. Exporting Individual Methods:

Exporting methods individually is considered a better option due to its clarity and explicitness. Each method is explicitly tagged for export, providing a clear understanding of what is being exported from the module. This approach reduces the verbose nature of object-based exports while maintaining higher maintainability.

Importing Methods:

a. Named Exports:

import {myMethod1, myMethod2} from 'myMethods';

This approach explicitly imports the desired methods and allows direct referencing via dot notation. It provides clarity but may result in verbose import statements for smaller modules.

b. Namespace Imports:

import * as myMethods from 'myMethods';

This approach imports all exported methods and allows referencing via dot notation as well. However, it may be less clear in larger modules when not all imported methods are utilized.

Performance Implications:

The choice between single class vs. multiple individual exports has minimal performance implications. ES6 implementations currently prioritize maintainability over optimization. Therefore, the recommended approach should be chosen based on maintainability and code readability.

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