Added a new assertion property numeric which checks if given variable is of type Number or BigInt. Then used that new assertion to replace a is.a('number') check in the closeTo/approximately assertion.
Also replaced a Math.abs function call which doesn't support BigInt which all adds up to supporting BigInt in closeTo/approximately.
TODO
[ ] Write more tests for numeric assertion.
Follow up
Look for more places where we should support BigInt.
Added a new assertion property
numericwhich checks if given variable is of typeNumberorBigInt. Then used that new assertion to replace ais.a('number')check in thecloseTo/approximatelyassertion.Also replaced a
Math.absfunction call which doesn't supportBigIntwhich all adds up to supportingBigIntincloseTo/approximately.TODO
numericassertion.Follow up
Fixes #1465