Function isNonZeroNegativeInteger

Checks if a given number is a negative non-zero integer.

Remarks

This function uses the Number.isInteger method to check if the input is an integer, and then checks if it is less than 0.

Example

isNonZeroNegativeInteger(-5); ;
//=> true
isNonZeroNegativeInteger(0);  ;
//=> false
isNonZeroNegativeInteger(5);  ;
//=> false
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