@babel/plugin-transform-private-property-in-object enables Babel to transform private class properties accessed reflectively using the in operator. This plugin is essential for achieving broader browser compatibility when your JavaScript code leverages modern private class features. Without this transformation, older browsers might not correctly interpret the in operator used with private fields, leading to unexpected errors or behavior. By incorporating this plugin, developers can confidently use private class properties while ensuring their code runs smoothly across various environments.
The release frequency of @babel/plugin-transform-private-property-in-object is sporadic. In 2023, releases were most frequent in May and November. Releases slowed in the first half of 2024, picking up slightly between March and June and spiking in October. There were no releases between November 2024 and March 2025, with only one release in April 2025. No releases occurred in May, June or July 2025.
@babel/plugin-transform-private-property-in-object downloads surged from February 2024 to July 2025, peaking at over 94 million. Starting from around 10 million. A clear upward trend is visible.August 2025 downloads are not yet complete, they are much lower that the peak.
