mathiasbynens/jsesc: Given some data, jsesc returns the shortest possible stringified & ASCII-safe representation of that data.

Given some data, jsesc returns a stringified representation of that data. jsesc is similar to JSON.stringify() except: it outputs JavaScript instead of JSON by default, enabling support for data structures like ES6 maps and sets; it offers many options to customize the output; its output is ASCII-safe by default, thanks to its use of escape sequences where needed. For any input, jsesc generates the shortest possible valid printable-ASCII-only output. Here’s an online demo.