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Benefits, challenges, and usability evaluation of DeloreanJS: a back-in-time debugger for JavaScript.
Paul Leger1, Felipe Ruiz1, Hiroaki Fukuda2
1Escuela de Ingeniería, Universidad Católica del Norte, Coquimbo, Elqui, Chile.
Peerj. Computer Science
|June 22, 2023
Summary
DeloreanJS, a new JavaScript debugger, allows developers to go back in time during execution, significantly improving bug detection and problem-solving capabilities compared to traditional debuggers.
Area of Science:
- Software Engineering
- Computer Science
Background:
- JavaScript web applications are prevalent but prone to bugs.
- Existing JavaScript debuggers lack backward execution and interactive debugging capabilities.
Purpose of the Study:
- Introduce DeloreanJS, a novel JavaScript debugger.
- Evaluate DeloreanJS's usability and effectiveness in bug detection.
Main Methods:
- Developed DeloreanJS using continuations and static analysis.
- Compared DeloreanJS with Mozilla Firefox's debugger via a usability study.
- Assessed 30 computer science students on five bug-detection tasks.
Main Results:
- 100% of participants recommended DeloreanJS, versus 53% for Firefox's debugger.
- DeloreanJS achieved a "Good" usability score (71.6), while Firefox's debugger scored "Acceptable" (55.8).
Conclusions:
- DeloreanJS offers superior usability and effectiveness for debugging JavaScript web applications.
- The back-in-time feature significantly enhances developer experience and bug resolution.
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