How to understand the results from regexp.exec from multiple input path

[shitai-chen]

Hi Folks,

I was trying to do something like:

const regexp = pathToRegexp(["/v2/collections/:symbol/listings", "/v2/tokens/:token_id", "/v2/tokens/:token_id/listings"], keys);

regexp.exec("/v2/tokens/fooooooo/listings");
=> output: `/v2/tokens/btest/listings,,,btest`

I am trying to understand the response. My goal is to put all my api patterns into an array, then I can use your lib to detect which pattern the incoming URL falls into, however, I don't understand the output format. I don't know the array means. Why there are some empty fields there? and why 4 elements in the output array.

Anyone can explain this to me? Super thanks.

Also I tried match function whose result format is more readable to me. So I also wonder if I can set an array of strings to match function then match can tell me which one it matches. That would be great.

[blakeembrey]

It matches the keys array, just like when you use it without an array.