is.number(0)
is.number(1)
is.number(-1)
is.number('undefined')
is.number('null')
is.number(Symbol())
is.number(null)
is.number(true)
is.number(BigInt(1))
is.number([])
is.number(false)
is.number("")
is.number('')
is.number(``)
is.number({})
is.number(undefined)
is.number(Function)
is.number(() => {})
is.number(BigInt)
is.number(Symbol)
is.number(NaN)
is.number(Infinity)
is.number(-Infinity)
is.number(Number.POSITIVE_INFINITY)
is.number(Number.NEGATIVE_INFINITY)
is.not.number(0)
is.not.number(1)
is.not.number(-1)
is.not.number('undefined')
is.not.number('null')
is.not.number(Symbol())
is.not.number(null)
is.not.number(true)
is.not.number(BigInt(1))
is.not.number([])
is.not.number(false)
is.not.number("")
is.not.number('')
is.not.number(``)
is.not.number({})
is.not.number(undefined)
is.not.number(Function)
is.not.number(() => {})
is.not.number(BigInt)
is.not.number(Symbol)
is.not.number(NaN)
is.not.number(Infinity)
is.not.number(-Infinity)
is.not.number(Number.POSITIVE_INFINITY)
is.not.number(Number.NEGATIVE_INFINITY)