babel-plugin-transform-exponentiation-operator

What is babel-plugin-transform-exponentiation-operator?

The babel-plugin-transform-exponentiation-operator package is a Babel plugin that transforms the exponentiation operator (**) in JavaScript into a form that is compatible with older JavaScript environments that do not support this operator natively.

What are babel-plugin-transform-exponentiation-operator's main functionalities?

Transform Exponentiation Operator

This feature allows you to use the exponentiation operator (**) in your code, and the plugin will transform it into a call to Math.pow, which is compatible with older JavaScript environments.

const squared = 2 ** 2; // Transformed to Math.pow(2, 2);

Other packages similar to babel-plugin-transform-exponentiation-operator

babel-plugin-transform-es2015-modules-commonjs

This package transforms ES2015 modules to CommonJS. While it does not specifically handle the exponentiation operator, it is similar in that it transforms newer JavaScript syntax into a form that is compatible with older environments.

babel-plugin-transform-async-to-generator

This package transforms async/await syntax into generator functions. Like babel-plugin-transform-exponentiation-operator, it helps in making modern JavaScript features compatible with older environments.

babel-plugin-transform-object-rest-spread

This package transforms the object rest/spread syntax into a form that is compatible with older JavaScript environments. It is similar in its goal of making modern JavaScript syntax usable in environments that do not support it natively.

README

babel-plugin-transform-exponentiation-operator

Compile exponentiation operator to ES5

Example

// x ** y

let squared = 2 ** 2;
// same as: 2 * 2

let cubed = 2 ** 3;
// same as: 2 * 2 * 2


// x **= y

let a = 2;
a **= 2;
// same as: a = a * a;

let b = 3;
b **= 3;
// same as: b = b * b * b;

Installation

npm install --save-dev babel-plugin-transform-exponentiation-operator

Usage

Via .babelrc (Recommended)

.babelrc

{
  "plugins": ["transform-exponentiation-operator"]
}

Via CLI

babel --plugins transform-exponentiation-operator script.js

Via Node API

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

References

• Proposal: Exponentiation Operator
• Spec: Exponential Operator