n4s
Version:
typed schema validation version of enforce
19 lines (18 loc) • 525 B
text/typescript
/**
* Validates that a value is not a number (or is NaN).
* Inverse of isNumber. Considers NaN as not a number.
*
* @param value - Value to validate
* @returns True if value is not a number or is NaN
*
* @example
* ```typescript
* enforce('123').isNotNumber(); // passes
* enforce(NaN).isNotNumber(); // passes
* enforce(true).isNotNumber(); // passes
* enforce(42).isNotNumber(); // fails
* ```
*/
export function isNotNumber(value: any): boolean {
return typeof value !== 'number' || Number.isNaN(value);
}