Given that Babel's core functionality involves transforming modern JavaScript, it is incentivised to keep the AST definition and the parser up-to-date with new language syntax. Because only JavaScript primitives are executed, this is not a security problem. For example, instead of emulating = expressions which is error-prone since they can result in surprisingly un-intuitive results, the expression can simply be evaluated on the de-obfuscator virtual machine. With our free Javascript DeObfuscator, we make it easier for web developers and professionals to manage their projects. This allows some transformations to be implemented without the need to emulate JavaScript behaviour. While it may seem like a minor task, it’s an important one that can have a big impact on your applications’ security. Deobfuscating Javascript is an important step of software development that many developers overlook. Babel's core package 'babel-core' and its helpers 'babylon' (parser) and 'babel-types' (AST) provide useful functions for AST manipulation. JavaScript Deobfuscator is an online deobfuscator that removes common js obfuscation techniques. This tool using babel-plugin-deobfuscate to implement.

Deobfuscate js