/// <reference types="./stack-trace-utils.d.ts" />
import { isObject, isString } from './object-utils.js';
export function extendStackTrace(err, stackError) {
    if (isStackHolder(err) && stackError.stack) {
        // Remove the first line that just says `Error`.
        const stackExtension = stackError.stack.split('\n').slice(1).join('\n');
        err.stack += `\n${stackExtension}`;
        return err;
    }
    return err;
}
function isStackHolder(obj) {
    return isObject(obj) && isString(obj.stack);
}