The @babel/plugin-proposal-numeric-separator Babel plugin enables support for numeric separators (underscores) in JavaScript numbers. This vastly improves readability, especially for large numbers, binary, or hexadecimal literals. The plugin transforms code using separators into standard numeric literals understood by older JavaScript engines. Install it as a dev dependency to enjoy enhanced number readability in your codebase while maintaining broad compatibility.
@babel/plugin-proposal-numeric-separator's release frequency is irregular. Releases occurred sporadically between August 2018 and June 2022, with periods of multiple releases in a month, followed by extended periods of no releases. There have been no releases since June 2022, with no releases in 2023, 2024, or the first eight months of 2025.
Downloads of @babel/plugin-proposal-numeric-separator fluctuated throughout 2024 and 2025. From March 2024 to August 2025, downloads ranged between 33 million and 59 million. However, September 2025 shows a significant drop to 14.8 million, likely due to incomplete data for the current month.
