@babel/plugin-proposal-private-property-in-object
This plugin transforms checks for a private property in an object
Deprecated on npm. The maintainers' message: “This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-private-property-in-object instead.”
npm says
50,150,106
per week
Every tarball fetch: mirrors, scanners, CI and people.
real installs
high confidence≈ 50.1M–50.2M
per week
Mirror spikes and crawlers removed. CI and dependency installs still count, so this is not a head count.
noise under 1% of npm's count, so nearly all of it counts. noise real installs
Why this estimate
With JavaScript on, this lists what the filter found for this package.
Snapshot from the daily build of Nov 6, 2026, last 7 days of npm data. With JavaScript on, this page recomputes it live from the npm API.
How many people use @babel/plugin-proposal-private-property-in-object?
npm counted 50,150,106 downloads of @babel/plugin-proposal-private-property-in-object in the last 7 days. Nobody can count people exactly, npm included: it does not record who downloaded what. After removing mirror spikes and crawlers, about 50.1M–50.2M look like real installs. At this scale most of them come from CI, builds and other packages that depend on @babel/plugin-proposal-private-property-in-object, so the number of people behind them is far smaller.
Is @babel/plugin-proposal-private-property-in-object still maintained?
No: the latest version is marked deprecated on npm, with the message “This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-private-property-in-object instead.”. The latest version, 7.21.11, came out on Jun 5, 2023. There were no stable releases in the last 12 months. It was first published on May 26, 2020. npm lists 4 maintainers.
Is @babel/plugin-proposal-private-property-in-object still used?
Downloads with publish spikes removed are up 19% over 3 months and up 64% over 11 months. For scale, the median of the 269 packages we track, which lean towards today's most downloaded, is up 157% over 11 months, so this one is behind that. Last week, 100% of downloads above the crawler floor were on major version 7, the latest one; the most used single version was 7.21.11, with 62%. Weekdays get 1.9× the downloads of weekends, which fits people at work, though CI follows the same rhythm. Crawlers account for about 169 downloads a week, roughly 7 per version.
How the estimate works
- Cut the spike every new version gets from mirrors in its first days.
- Subtract the flat floor robots download from every version each week.
- Show what is left as a range, with a confidence level. It still includes CI and dependency installs, so it is not a count of people.