To update these tests, first update the .js file that you want to update. Note: make sure each function occupies a separate line so that line numbers in the symbolicated traces will match the original trace. Then, run uglify (can be installed via npm install -g uglify-js) For example:

uglifyjs throw.js --source-map -o throw.min.js

This will minify the files and place a source map which can be used for testing in the directory.