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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | 430x 48x | /**
* Returns true when `value` is not a finite number.
* No coercion is performed.
*
* Flags:
* - `NaN`, `Infinity`, `-Infinity`
* - `null`, `undefined`
* - Any non-number type (e.g., string, boolean, object)
*
* @example isInvalidNumber(42) // false
* @example isInvalidNumber(42.5) // false
* @example isInvalidNumber(NaN) // true
* @example isInvalidNumber(Infinity) // true
* @example isInvalidNumber('42') // true
* @example isInvalidNumber(null) // true
* @example isInvalidNumber(undefined) // true
* @returns boolean indicating invalidity
*/
export const isInvalidNumber = (value: unknown): boolean => {
// Explicitly test value type before finiteness check for clarity, even though it's not necessary
return !(typeof value === 'number' && Number.isFinite(value));
};
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