import { getBuiltinNameOfConstructor } from "./objectKinds.js";
/** Shallowly copy the properties of the object. */
export const shallowClone = input => _clone(input, null);
/** Deeply copy the properties of the a non-subclassed Object, Array or Date.*/
export const deepClone = (input) => _clone(input, new Map());
const _clone = (input, seen) => {
    if (typeof input !== "object" || input === null)
        return input;
    if (seen?.has(input))
        return seen.get(input);
    const builtinConstructorName = getBuiltinNameOfConstructor(input.constructor);
    if (builtinConstructorName === "Date")
        return new Date(input.getTime());
    // we don't try and clone other prototypes here since this we can't guarantee arrow functions attached to the object
    // are rebound in case they reference `this` (see https://x.com/colinhacks/status/1818422039210049985)
    if (builtinConstructorName && builtinConstructorName !== "Array")
        return input;
    const cloned = Array.isArray(input) ?
        input.slice()
        : Object.create(Object.getPrototypeOf(input));
    const propertyDescriptors = Object.getOwnPropertyDescriptors(input);
    if (seen) {
        seen.set(input, cloned);
        for (const k in propertyDescriptors) {
            const desc = propertyDescriptors[k];
            if ("get" in desc || "set" in desc)
                continue;
            desc.value = _clone(desc.value, seen);
        }
    }
    Object.defineProperties(cloned, propertyDescriptors);
    return cloned;
};