ts-persian-toolkit v0.0.1

PersianUtils by Typescript Persian.js and Rial.js and Check Iranian National Code Validity and Iranian postal code validation and NumToPersian

Iranian postal code val
this is some rules about this regex:

* It's all numeric
* 10 digit count
* don't use 0 in first 5 digit
* don't use 2 in postal code
* First 4 digit is not the same
* The 5th digit cannot be 5
* all digits aren't the same

The following regex satisifes your conditions:
\b(?!(\d)\1{3})[13-9]{4}[1346-9][013-9]{5}\b

Explanation:
* \b - a word boundary
* (?!(\d)\1{3}) - negative lookahead to make sure that the first 4 digits are not the same.
* [13-9]{4} - matches 4 occurrences of all the digits except 0 and 2
* [1346-9] - matches a single digit that is not a 0,2 or 5
* [013-9]{5} - matches 5 occurrences of all the digits except 2
* \b - a word boundary

=> I made this project.