Huawei's ArkTS brings TypeScript-like syntax with performance optimizations, but developers need to follow specific practices for maximum efficiency. Using const for immutable variables and avoiding type mixing helps the engine optimize runtime paths.

Performance gains come from careful handling of TypedArray usage, loop optimizations, and minimizing union types in arrays. These techniques reduce memory overhead and prevent deoptimization during arithmetic operations or data processing tasks.

Experts recommend avoiding frequent exceptions and closures in hot paths. Instead, prefer direct parameter passing and handle errors gracefully without throwing inside loops. These small changes lead to measurable improvements in execution speed.

Developers working with HarmonyOS should adopt these methods early. As ArkTS adoption grows, understanding low-level performance mechanics will differentiate well-tuned applications from sluggish ones.