export const isObject = (input) => typeof input === "object" && input !== null && !Array.isArray(input);
export function mergeDeep(target, ...sources) {
    if (!sources.length)
        return target;
    const source = sources.shift();
    if (isObject(target) && isObject(source)) {
        Object.keys(source).forEach((key) => {
            if (isObject(source[key])) {
                if (!target[key])
                    Object.assign(target, { [key]: {} });
                mergeDeep(target[key], source[key]);
            }
            else {
                Object.assign(target, { [key]: source[key] });
            }
        });
    }
    return mergeDeep(target, ...sources);
}
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