babel-plugin-transform-es2015-classes

What is babel-plugin-transform-es2015-classes?

The babel-plugin-transform-es2015-classes package is a Babel plugin that transforms ES2015 (ES6) class syntax into a form that can be understood by older JavaScript environments that do not support ES2015 classes. This allows developers to write modern JavaScript code while maintaining compatibility with older environments.

What are babel-plugin-transform-es2015-classes's main functionalities?

Class Declaration Transformation

Transforms ES2015 class declarations into a form that can be understood by older JavaScript environments.

class Example { constructor() { this.value = 42; } getValue() { return this.value; } }

Inheritance Transformation

Transforms ES2015 class inheritance syntax into a form that can be understood by older JavaScript environments.

class Parent { constructor() { this.parentValue = 'parent'; } } class Child extends Parent { constructor() { super(); this.childValue = 'child'; } }

Static Methods Transformation

Transforms ES2015 static methods into a form that can be understood by older JavaScript environments.

class Example { static staticMethod() { return 'static method'; } }

Other packages similar to babel-plugin-transform-es2015-classes

babel-plugin-transform-es2015-arrow-functions

This package transforms ES2015 arrow functions into ES5 function expressions. While it focuses on arrow functions rather than classes, it serves a similar purpose of enabling modern JavaScript syntax in older environments.

babel-plugin-transform-es2015-parameters

This package transforms ES2015 parameter syntax (such as default parameters and rest parameters) into ES5-compatible code. It complements babel-plugin-transform-es2015-classes by handling another aspect of ES2015 syntax.

README

babel-plugin-transform-es2015-classes

Compile ES2015 classes to ES5

Installation

$ npm install babel-plugin-transform-es2015-classes

Usage

Via .babelrc (Recommended)

.babelrc

// without options
{
  "plugins": ["transform-es2015-classes"]
}

// with options
{
  "plugins": [
    ["transform-es2015-classes", {
      "loose": true
    }]
  ]
}

Via CLI

$ babel --plugins transform-es2015-classes script.js

Via Node API

require("babel-core").transform("code", {
  plugins: ["transform-es2015-classes"]
});