$ docker pull vtiwamoto/node-re2-benchmark

$ docker run --rm --init vtiwamoto/node-re2-benchmark
[input]
pattern: ([a-z]+)+$
subject: aaaaaaaaaaaaaaaaaaaaaaaaaaaa!

[benchmark]
RE2: 0.192ms
RegExp: 5082.343ms

$ docker run --rm --init vtiwamoto/node-re2-benchmark '(.*a){30}' 'aaaaaaaaaaaaaaaaaaaaaaaaaaaX'
[input]
pattern: (.*a){30}
subject: aaaaaaaaaaaaaaaaaaaaaaaaaaaX

[benchmark]
RE2: 0.308ms
RegExp: 4551.599ms