JavaScript Obfuscator

javascript-obfuscator is a Node.js library and CLI that transforms readable JavaScript into hardened, difficult-to-reverse code. It applies techniques such as identifier mangling, string array extraction/encoding, control-flow flattening, dead-code injection, and numeric literal transformations to disguise intent. Advanced options include self-defending code, domain locking, debug/console protection, and property key transformation, allowing you to tailor defenses to your threat model. The tool supports source maps and granular “threshold”/whitelist settings so you can balance protection with performance and debuggability. It works with modern JavaScript syntax and integrates into build pipelines to protect selected bundles or modules automatically. Teams use it to deter casual inspection of proprietary logic, license checks, or anti-abuse heuristics shipped to the browser or Node targets.