import { isPlainObject } from "./is-plain-object"; function mergeDeep(defaults, options) { const result = Object.assign({}, defaults); Object.keys(options).forEach((key) => { if (isPlainObject(options[key])) { if (!(key in defaults)) Object.assign(result, { [key]: options[key] }); else result[key] = mergeDeep(defaults[key], options[key]); } else { Object.assign(result, { [key]: options[key] }); } }); return result; } export { mergeDeep };