perf(compression): use regex exec instead of match

[bluwy]

I was running eslint-plugin-regexp in polka and found we can refactor the str.match(re) to re.exec(str) for perf.

/Users/bjorn/Work/oss/vite/node_modules/.pnpm/@[email protected]/node_modules/@polka/compression/build.js
  30:32  error  Use the `RegExp#exec()` method instead  regexp/prefer-regexp-exec
  30:68  error  Use the `RegExp#exec()` method instead  regexp/prefer-regexp-exec

I made some tests and can confirm there's a sizable perf improvement with exec. (perf.link test)

[kurtextrem]

might make sense to hoist the regexps too?

[bluwy]

The perf improvement from hoisting regex varies quite a bit in my experience and often doesn't yield noticable returns. I think engines are able to optimize them well enough these days. Maybe those with g flags could still be useful to hoist as they're more stateful.

[lukeed]

released as @polka/[email protected], ty @bluwy

[kurtextrem]

@bluwy Last time we benched it for valibot, it was ~2ms faster to hoist (even non global regexps)

[bluwy]

Yeah it'll depend but it's often a very small amount that I've come to prefer not bugging libraries to hoist them unless really needed 😅

[lukeed]

It generally has a significant impact in repeat synchronous usage (eg loops), so seeing it in valibot makes sense. In an async-like callback (like here) it won’t matter much, especially with simple patterns