Explore the intricacies of translating Dart to efficient JavaScript in this 58-minute conference talk from GOTO Aarhus 2012. Dive into the Dart programming language, its deployment options, and the challenges of optimizing Dart-to-JavaScript compilation. Learn about the compiler's goals, intermediate representations, and various optimization techniques including tree shaking, global value numbering, and speculative optimizations. Discover how user-definable operators, compact class definitions, and closures are handled in the compilation process. Examine the performance implications and code size considerations when converting Dart to JavaScript. Gain insights into the SSA representation, dominator trees, and profile-guided optimizations used to bridge the gap between Dart's low-level operators and JavaScript's built-in primitives.