ECMA Visualizer

This Chrome extension is an implementation of the tool presented in the paper “JSSpecVis: A JavaScript Language Specification Visualization Tool,” accepted for publication in the Demonstration track at FSE 2025. This Chrome extension is developed to support an intuitive understanding of the javascript specification by providing example programs for each part of the specification with a call-path context selected by the readers. In addition, the extension supports a debugging feature called resume, which allows users to start debugging from the exact position of the selected step on our debugger on an external website.