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

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

The @babel/plugin-syntax-private-property-in-object npm package allows Babel to parse syntax that uses private properties in objects. This is particularly useful for developers working with the latest JavaScript features, enabling them to write modern code that includes private class fields accessed within objects. It's important to note that this plugin only allows Babel to parse this syntax; it doesn't provide the implementation for how private properties work at runtime.

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

Parsing private property in object syntax

This feature enables Babel to understand and parse code that checks for the existence of a private property within an object. The code sample demonstrates a class that includes a private property and a method to check if a private property exists within a given object using the 'in' operator.

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

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

@babel/plugin-proposal-private-methods

This package allows Babel to parse and transform private instance methods and accessors in classes. While @babel/plugin-syntax-private-property-in-object focuses on the syntax for private properties in objects, @babel/plugin-proposal-private-methods extends this functionality to include methods and accessors, providing a broader scope of encapsulation features.

@babel/plugin-proposal-class-properties

Enables Babel to parse and transform public and private class properties. This package is broader than @babel/plugin-syntax-private-property-in-object as it includes support for both public and private class fields, allowing developers to define class properties more succinctly and with clear encapsulation.

README

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

Allow parsing of '#foo in obj' brand checks

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

Install

Using npm:

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

or using yarn:

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