autoEscape not working when one of the searchWords is regex

[mkurek]

When autoEscape is set to true and (at least) one of the elements in searchWords array is regex, the following exception is raised:

TypeError
str.replace is not a function

Example: https://codesandbox.io/s/20p3zk380n

[bvaughn]

The autoEscape parameter is meant to escape sensitive characters before converting a string to a regex. It's not meant to work with regexes.

I guess this is a bug, but I don't plan on fixing it. I'd be happy to review a PR though.

[warmbowski]

Suggestion: Check instanceof RegExp for each searchWords value in the autoescape function and don't escape if it is RegExp.