import type { Option } from '../../../mod.js';
import type { option } from './interface.js';
import { some_tag } from '../../Constant/mod.js';
export interface Some<T> extends option<T> {
    readonly _tag: typeof some_tag;
    readonly value: T;
    /** ### `eq` : 对{@link PartialEq} 的实现
    如果是Some类型数据,会使用`===`比较里面的内容
    */
    eq(other: unknown): boolean;
}
/** ## `Some`
  + 将一个值转化为`Some`类型
  @throws TypeError : 如果值为`null`/`underfind`
  @category TypeClass
 */
export declare function Some<T>(val: NonNullable<T>): Option<T>;
/** ### `is_some` : 运行时判断`Some`类型 */
export declare function is_some(val: unknown): val is Some<unknown>;
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