isNumber()function

isNumber(value: unknown, min = Number.NEGATIVE_INFINITY, max = Number.POSITIVE_INFINITY): value is number

Param	Type
`value`	`unknown`	The value to test. required
`min`	`unknown`	Minimum allowed value, inclusive (defaults to `-Infinity`). Defaults to `Number.NEGATIVE_INFINITY`
`max`	`unknown`	Maximum allowed value, inclusive (defaults to `+Infinity`). Defaults to `Number.POSITIVE_INFINITY`

Return
`value is number`	`true` if `value` is a finite number within range, otherwise `false`.

Is a value a finite number (optionally within a specified min/max range)?

Examples

isNumber(17, 10, 20) // true