app/node_modules/@babylonjs/core/Misc/deepCopier.js

import { Logger } from "./logger.js";
const CloneValue = (source, destinationObject, shallowCopyValues) => {
    if (!source) {
        return null;
    }
    if (source.getClassName && source.getClassName() === "Mesh") {
        return null;
    }
    if (source.getClassName && (source.getClassName() === "SubMesh" || source.getClassName() === "PhysicsBody")) {
        return source.clone(destinationObject);
    }
    else if (source.clone) {
        return source.clone();
    }
    else if (Array.isArray(source)) {
        return source.slice();
    }
    else if (shallowCopyValues && typeof source === "object") {
        return { ...source };
    }
    return null;
};
function GetAllPropertyNames(obj) {
    const props = [];
    do {
        Object.getOwnPropertyNames(obj).forEach(function (prop) {
            if (props.indexOf(prop) === -1) {
                props.push(prop);
            }
        });
    } while ((obj = Object.getPrototypeOf(obj)));
    return props;
}
/**
 * Class containing a set of static utilities functions for deep copy.
 */
export class DeepCopier {
    /**
     * Tries to copy an object by duplicating every property
     * @param source defines the source object
     * @param destination defines the target object
     * @param doNotCopyList defines a list of properties to avoid
     * @param mustCopyList defines a list of properties to copy (even if they start with _)
     * @param shallowCopyValues defines wether properties referencing objects (none cloneable) must be shallow copied (false by default)
     * @remarks shallowCopyValues will not instantite the copied values which makes it only usable for "JSON objects"
     */
    static DeepCopy(source, destination, doNotCopyList, mustCopyList, shallowCopyValues = false) {
        const properties = GetAllPropertyNames(source);
        for (const prop of properties) {
            if (prop[0] === "_" && (!mustCopyList || mustCopyList.indexOf(prop) === -1)) {
                continue;
            }
            if (prop.endsWith("Observable")) {
                continue;
            }
            if (doNotCopyList && doNotCopyList.indexOf(prop) !== -1) {
                continue;
            }
            const sourceValue = source[prop];
            const typeOfSourceValue = typeof sourceValue;
            if (typeOfSourceValue === "function") {
                continue;
            }
            try {
                if (typeOfSourceValue === "object") {
                    if (sourceValue instanceof Uint8Array) {
                        destination[prop] = Uint8Array.from(sourceValue);
                    }
                    else if (sourceValue instanceof Array) {
                        destination[prop] = [];
                        if (sourceValue.length > 0) {
                            if (typeof sourceValue[0] == "object") {
                                for (let index = 0; index < sourceValue.length; index++) {
                                    const clonedValue = CloneValue(sourceValue[index], destination, shallowCopyValues);
                                    if (destination[prop].indexOf(clonedValue) === -1) {
                                        // Test if auto inject was not done
                                        destination[prop].push(clonedValue);
                                    }
                                }
                            }
                            else {
                                destination[prop] = sourceValue.slice(0);
                            }
                        }
                    }
                    else {
                        destination[prop] = CloneValue(sourceValue, destination, shallowCopyValues);
                    }
                }
                else {
                    destination[prop] = sourceValue;
                }
            }
            catch (e) {
                // Log a warning (it could be because of a read-only property)
                Logger.Warn(e.message);
            }
        }
    }
}
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