Impact of Selected JavaScript Engines on the Performance of Mobile Hybrid Applications

ABSTRACT This study presents a comprehensive comparative analysis of the performance of different JavaScript engines in the context of React Native hybrid applications, with a particular focus on the differences between JavaScript Interface (JSI) and bridge architectures. The study conducted a series of performance tests on the most popular JavaScript engines, including Hermes, JavaScriptCore (JSC), and V8, using a set of standard benchmarks and use cases. As part of the research, a QuickJS engine communication layer was created, and necessary changes were proposed to the React Native framework and engine code. The testing methodology included measurements of application package size, interaction time, memory usage, UI rendering performance, and operation execution speed. Tests were conducted on identical components implemented in both React Native architectures, allowing a direct comparison of the impact of architecture on JavaScript engine performance. The results of the experiment indicate differences in engine performance depending on the scenario and describe the differences between their use in bridge and JSI architectures.