@babel/plugin-transform-private-property-in-object

What is @babel/plugin-transform-private-property-in-object?

The @babel/plugin-transform-private-property-in-object npm package is a Babel plugin that allows for the transformation of syntax for private properties in objects. This is particularly useful for ensuring compatibility across different JavaScript environments, especially when using newer ECMAScript features that may not be supported everywhere. It helps in writing modern JavaScript code that uses private class fields, ensuring that the code can be transpiled to a form that is widely supported.

What are @babel/plugin-transform-private-property-in-object's main functionalities?

Private Property Checking

This feature allows the plugin to transform checks for private properties within objects. It enables the use of the 'in' operator to check for the existence of a private property in an instance of a class, ensuring that the syntax is correctly transpiled for environments that do not natively support private class fields.

"class MyClass { #myPrivateProperty = 'secret'; hasPrivateProperty(obj) { return #myPrivateProperty in obj; } }"

Other packages similar to @babel/plugin-transform-private-property-in-object

@babel/plugin-proposal-class-properties

This package is similar to @babel/plugin-transform-private-property-in-object as it provides functionality for transforming class properties, including static properties and private properties. However, it focuses more broadly on all class properties, not just private ones within objects. It allows developers to use the latest JavaScript features regarding class properties while ensuring backward compatibility.

@babel/plugin-proposal-private-methods

Similar to @babel/plugin-transform-private-property-in-object, this package focuses on transforming private methods and accessors in classes. While @babel/plugin-transform-private-property-in-object deals with private properties in objects, @babel/plugin-proposal-private-methods extends the functionality to include methods and getters/setters that are marked as private, offering a broader scope of class encapsulation features.

README

@babel/plugin-transform-private-property-in-object

This plugin transforms checks for a private property in an object

See our website @babel/plugin-transform-private-property-in-object for more information.

Install

Using npm:

npm install --save-dev @babel/plugin-transform-private-property-in-object

or using yarn:

yarn add @babel/plugin-transform-private-property-in-object --dev