error-stack-parser is a JavaScript library that parses error stacks from various browsers and environments, transforming raw stack traces into structured, easily-manipulable data. It supports parsing stacks from Chrome, Firefox, Safari, Opera, and Node.js, enabling developers to accurately identify the source of errors and debug their code more efficiently. The parsed stack frames contain crucial information such as function names, file names, line numbers, and column numbers, aiding in precise error localization.