Bug: nstr returns empty string for 0 with maxDecimals: 0

[schplitt]

Description:
When calling with e.g. nstr(0.3333333432674419, { maxDecimals: 0 }), the function returns an empty string ("") instead of "0". This happens because "0".replace(/\.?0+$/, '') results in "". The expected result is "0".

Steps to reproduce:

nstr(0.3333333432674419, { maxDecimals: 0 }) // returns "", should return "0"

Possible fixes:

• Option 1: Add a check after stripping zeros to ensure the result is never an empty string:

  let result = str.replace(/\.?0+$/, '')
  if (result === '') result = '0'

• Option 2 (Recommended): Use a safer regex that only removes trailing zeros after a decimal point:

  let result = str.includes('.') ? str.replace(/\.?0+$/, '') : str

  or

  let result = str.replace(/\.0*$/, '')

  This way, "0" is left untouched and only meaningful decimal parts are affected.

I would recommend option 2, as it avoids additional conditional checks and keeps the code simple and robust. It safely leaves "0" unchanged and only affects numbers with decimal places.

Expected behavior:
The function should return "0" instead of an empty string in these cases.