ngx-mask

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Hi,

Is there any posible way to create a mask for optionally negative number with optional unlimited digits after coma?

My inputs:

1. -12345..9.2
2. -1,222222222222
3. 12345,2
4. 111111111111.2
5. 1234567
6. -1

I tried this pattern, but i can't type dot if i dont type '-' character before

           mask="M9*D9*"
           [patterns]="numericCustomPattern"
           [allowNegativeNumbers]="true"
           [dropSpecialCharacters]="false"

  numericCustomPattern = {
    'M' : { pattern : new RegExp('-?') },
    '9' : { pattern : new RegExp('[0-9]') },
    'D' : { pattern : new RegExp(/[.,]/g) }
  };