Auto incrementing serial numbers, containing non-digit symbols.
npm install numerator
shell
npm install numerator
`
Then make reference inside yor module...
`javascript
const numerator = require('numerator');
// ... start numeration from begining with given template
numerator.next('IN/2019/000'); // ⇨ 'IN/2019/001'
// ... or to get next of the given number
numerator.next('IN/2019/056'); // ⇨ 'IN/2019/057'
// ... to get first number with only given prefix
numerator.next('USER-', true); // ⇨ 'USER-1'
// ... or to get next number with expanding template
numerator.next('USER-99', true); // ⇨ 'USER-100'
`
API
$3
Generates and returns next number based on given number
#### Arguments
* num - (string | number) A number, that must be icremented
* expand - (boolen) optional; true, if we want to expand number template (to increase its lenght) in case, when quantity of digits of the number must be increased; by default it is false
Note: if you pass "USER-99" as num and expand is false, it will throw Error (not returns "USER-100"), so if you need "USER-100", expand mast be true
#### Returns
string - result of inrementing
$3
Returns the prefix of given number
#### Arguments
* num - (string | number) A number, we want to get prefix of
#### Returns
string - prefix of the number, if the number has it
Note: prefix will be returned without leading zeros, if the number has them
Testing
`shell
npm test
``