/**
 * Returns `true` if the number is NaN (using `Number.isNaN`).
 *
 * @example
 * ```typescript
 * 1.95.isNaN(); // => false
 * NaN.isNaN(); // => true
 * Infinity.isNaN(); // => false
 * -Infinity.isNaN(); // => false
 * ```
 *
 *  @see {@link Number.isNaN}
 */
declare const isNaN: (n: number) => boolean;
export default isNaN;
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