Javanni: a verifier for javascript

Authors:
Martin Nordio;Cristiano Calcagno;Carlo Alberto Furia
Affiliations:
Chair of Software Engineering, ETH Zurich, Switzerland;Imperial College London and Monoidics Ltd., ETH Zurich, Switzerland;Chair of Software Engineering, ETH Zurich, Switzerland
Venue:
FASE'13 Proceedings of the 16th international conference on Fundamental Approaches to Software Engineering
Year:
2013

Citing 4
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Abstract

JavaScript ranks among the most popular programming languages for the web, yet its highly dynamic type system and occasionally unintuitive semantics make programming particularly error-prone. This paper presents Javanni, a verifier for JavaScript programs that can statically detect many common programming errors. Javanni checks the absence of standard type-related errors (such as accessing undefined fields) without requiring user-written annotations, and it can also verify full functional-correctness specifications. Several experiments with JavaScript applications reported in the paper demonstrate that Javanni is flexibly usable on programs with non-trivial specifications. Javanni is available online within the CloudStudio web integrated environment.