Babel Plugin Polyfill Regenerator

A Babel plugin that automatically imports regenerator-runtime when generator/async functions are used. Part of the babel-polyfills monorepo, this is the recommended replacement for @babel/plugin-transform-regenerator's built-in helper. Current version 0.6.8, released as part of the @babel/preset-env polyfill strategy. Unlike older approaches, it avoids bundling regenerator-runtime if not needed (tree-shaking friendly) and integrates with the broader babel polyfill ecosystem (corejs, entry/usage transforms). Requires @babel/core >=7.4 or ^8.0.0-0. Deprecated in favor of @babel/plugin-transform-runtime for library authors, but still maintained for use with @babel/preset-env usage-based polyfilling.