regjsenum

Enumerate matched strings for a given regular expression.

Install: npm install regjsenum

const enumerate = require('regjsenum').enumerate;

for (const string of enumerate(/(ab|c){3}/)) {
  console.log(string);
}

// prints:
ababab
cabab
abcab
ccab
ababc
cabc
abcc
ccc

Supports forced finite output:

const enumerate = require('regjsenum').enumerate;

for (const string of enumerateExamples("abc\\w*.*def")) {
  console.log(string);
}

// prints:
abcdef
abcAdef
abc.def
abcA.def
abcbdef
abcb.def
abc..def
abcA..def
abcb..def
abc1def
… (long but finite list of matching examples)

Comes with a tiny cli:

$ regjsenum '^\w+@[a-zA-Z_]+?\.[a-zA-Z]{2,3}$' | head
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$ regjsenum --examples '^\w+@[a-zA-Z_]+?\.[a-zA-Z]{2,3}$' | head -n5000 | tail
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License

MIT