import { isPlainObject } from "../predicate/isPlainObject.mjs";
import { isMergeableValue } from "../_internal/isMergeableValue.mjs";
import { isUnsafeProperty } from "../_internal/isUnsafeProperty.mjs";
//#region src/object/merge.ts
function merge(target, source) {
	const sourceKeys = Object.keys(source);
	for (let i = 0; i < sourceKeys.length; i++) {
		const key = sourceKeys[i];
		if (isUnsafeProperty(key)) continue;
		const sourceValue = source[key];
		const targetValue = target[key];
		if (isMergeableValue(sourceValue) && isMergeableValue(targetValue)) target[key] = merge(targetValue, sourceValue);
		else if (Array.isArray(sourceValue)) target[key] = merge([], sourceValue);
		else if (isPlainObject(sourceValue)) target[key] = merge({}, sourceValue);
		else if (targetValue === void 0 || sourceValue !== void 0) target[key] = sourceValue;
	}
	return target;
}
//#endregion
export { merge };
