fill-range
Fill in a range of numbers or letters, optionally passing an increment or `step` to use, or create a regex-compatible range with `options.toRegex`
expand-range
Fast, bash-like range expansion. Expand a range of numbers or letters, uppercase or lowercase. Used by micromatch.
in-range
Check if a number is in a given range
to-regex-range
Pass two numbers, get a regex-compatible source string for matching ranges. Validated against more than 2.78 million test assertions.
regexp-range
create regex class range string `[一-十]` `[⓪-㊿]` ...
