Avoid creating inline variables in escape key

[pie6k]

This function is called very often, so creating variables inside will lead to more garbage collections required

Also, probably regexps that are shared between comparisons might get optimized by JS engine, while inline regexp creates new 'instance' each time.

[theKashey]

https://jsperf.com/regexp-vs-compiled-regexp/1

• 8% faster on small strings, where no replacement is needed
• 2% faster on long strings (with 3 dots)
• ...
• 👍

[pie6k]

Thanks! Could you publish it to npm? :)

[theKashey]

v2.1.3 released!