braces
Bash-like brace expansion, implemented in JavaScript. Safer than other brace expansion libs, with complete support for the Bash 4.3 braces specification, without sacrificing speed.
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`
repeat-string
Repeat the given string n times. Fastest implementation for repeating a string.
exceljs
Excel Workbook Manager - Read and Write xlsx and csv Files.