Explore the inner workings of NativeScript, an open source framework for mobile front-end development, in this conference talk from JSConf Hawaii 2019. Dive into key concepts like JavaScript engines, native API access, and the application package structure. Learn about marshalling, multithreading with worker threads and isolates, and the importance of parse and compile times. Discover techniques for optimizing performance, including loading snapshots and managing garbage collection. Gain valuable insights into embedding V8 in real-world applications and leveraging frameworks like Angular and Vue.js for mobile development.