export interface CopyOps {
    readonly sym: unique symbol;
}
export declare const Copy: CopyOps;
/**
 * @tsplus type Copy
 */
export interface Copy {
    [Copy.sym](this: this, that: Partial<this>): this;
}
/**
 * @tsplus pipeable Copy copy
 * @tsplus location "@tsplus/stdlib/structure/Copy"
 */
export declare function copy<A extends Copy>(that: Partial<A>): (self: A) => A;
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