babel-helper-remap-async-to-generator is a Babel helper package that transforms async functions into generator functions compatible with older JavaScript environments. It's a crucial dependency for Babel plugins aiming to provide backwards compatibility for asynchronous code, effectively polyfilling async/await syntax. This helper renames the async function, converting the async keyword into a standard generator function using the function* syntax and managing promise resolution via regenerator-runtime. It ensures proper handling of asynchronous operations in older browsers or Node.js versions.