maskdata
Node module to mask various kinds of data in the required formats
tree-kit
Tree utilities which provides a full-featured extend and object-cloning facility, and various tools to deal with nested object structures.
data-guardian
Tiny, zero-dependencies, package which tries to mask sensitive data in arbitrary collections, errors, objects and strings.
jsmasker
A flexible module to mask sensitive properties in objects with customizable options, for both Node.js and browser