@babel/compat-data provides the compatibility data used by Babel's core transformations. This data maps JavaScript features to the browsers and versions that support them. Babel uses this information to determine which transformations are needed to ensure code runs correctly in the targeted environments. It includes core-js version, browser support for ECMAScript features, and other relevant compatibility details that Babel leverages for effective transpilation. Developers generally don't interact with this package directly but rely on Babel plugins consuming the data.
