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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 24 | 52x 55x | /**
* Checks if a `value` is `undefined`
*
* The opposite of {@link isNotUndefined}
*
* @example
* ```
* const result = isUndefined(undefined);
* console.log(result); // true
* ```
*
* @example
* ```
* const result = isUndefined(0);
* console.log(result); // false
* ```
*
* @param value - the value to check
* @returns `true` if `value` is `undefined`, otherwise `false`
*/
export const isUndefined = (value: unknown): value is undefined => {
return value === undefined;
};
|