declare global {
  interface Number {
    /**
     * The corresponding `Duration` represented in years.
     *
     * `Duration`s are represented as a `bigint` with 53 bits per unit internally.
     *
     * @example
     * ```typescript
     * (2).years; // => 2n << (53n * 7n)
     * (2).years.asYears(); // => 2
     * (2).years + (3).months; // => 2n << (53n * 7n) + 3n << (53n * 6n)
     * ((2).years + (3).months).asYears(); // => 2.25
     * ((2).years + (3).months).asMonths(); // => 27
     * ```
     */
    readonly years: bigint;
  }
}
export {};
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