PluginStatsbabel-plugin-undeclared-variables-check weekly downloads statistics
By babel (204 listings) · npm · Babel plugins
Throw a compile-time error on references to undeclared variables
babel-plugin-undeclared-variables-check has 70,104 recorded weekly downloads on npm, a decrease of 55.2% over the past 30 days, ranking #521 of 2,391 tracked listings.
About babel-plugin-undeclared-variables-check
babel-plugin-undeclared-variables-check
This plugin throws a compile-time error on references to undeclared variables.
Example
In
function foo() {}
foo();
bar();
Out
ReferenceError: stdin: Line 3: Reference to undeclared variable "bar" - did you mean "foo"?
1 | function foo() {}
2 | foo();
> 3 | bar();
| ^
4 |
Installation
npm install --save-dev babel-plugin-undeclared-variables-check
Usage
Via .babelrc (Recommended)
.babelrc
{
"plugins": ["undeclared-variables-check"]
}
Via CLI
babel --plugins undeclared-variables-check script.js
Via Node API
require("babel-core").transform("code", {
plugins: ["undeclared-variables-check"]
});
Description from the npm listing.
- babel-plugin
README badge
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Charts
Images: 30d · 1y · all time · 1600×900 dark
Adoption over time
7/30/90-day growth
Ranking history
Listing placement
Listing placement
Filled points are observed values; hollow points come from Internet Archive snapshots of the listing page. Dashed segments span periods with no observations — values between points are not interpolated.
Each band is one page of 20. Weekly downloads on a linear scale. Placement is projected from weekly downloads, so it can differ from the marketplace's own sort order. Hover a dot to see the listing.
Recent observations
Full history (122)Similar npm Babel plugins plugins
All 20 babel-plugin-undeclared-variables-check alternatives- 70.9K weekly downloads-47.3%
- 72.6K weekly downloads-37.8%
- 74.3K weekly downloads-42.3%
- 65.1K weekly downloads-65.7%
- 63.7K weekly downloads-52.2%
- 62.8K weekly downloads-53.3%
- 79.7K weekly downloads-45.5%
- 59.6K weekly downloads-47.8%
Data source
Weekly downloads (trailing 7 complete days) come from the official npm downloads API. Downloads include CI and mirrors and are not equivalent to installs or users. npm publishes no ratings.
Listing: https://www.npmjs.com/package/babel-plugin-undeclared-variables-check. First seen Oct 16, 2026; last successful collection Oct 21, 2026. See the methodology.