@babel/plugin-transform-async-to-generator transforms async functions into generator functions, effectively enabling compatibility with older JavaScript environments that don't natively support async/await. It replaces async functions with equivalent generator function implementations using Babel's transformation capabilities. This plugin is crucial for ensuring your modern JavaScript code runs seamlessly in legacy browsers or Node.js versions, bridging the gap between evolving language features and broader platform support. Consequently you can write modern code but produce output to run on older targets.