import { BaseOutputParser, OutputParserException, } from "@langchain/core/output_parsers";
/**
 * Class to parse the output of an LLM call to a date.
 * @augments BaseOutputParser
 */
export class DatetimeOutputParser extends BaseOutputParser {
    constructor() {
        super(...arguments);
        Object.defineProperty(this, "lc_namespace", {
            enumerable: true,
            configurable: true,
            writable: true,
            value: ["langchain", "output_parsers"]
        });
        Object.defineProperty(this, "lc_serializable", {
            enumerable: true,
            configurable: true,
            writable: true,
            value: true
        });
        /**
         * ISO 8601 date time standard.
         */
        Object.defineProperty(this, "format", {
            enumerable: true,
            configurable: true,
            writable: true,
            value: "YYYY-MM-DDTHH:mm:ssZ"
        });
    }
    static lc_name() {
        return "DatetimeOutputParser";
    }
    /**
     * Parses the given text into a Date.
     * If the parsing fails, throws an OutputParserException.
     * @param text The text to parse.
     * @returns A date object.
     */
    async parse(text) {
        const parsedDate = new Date(text.trim());
        if (Number.isNaN(parsedDate.getTime())) {
            throw new OutputParserException(`Could not parse output: ${text}`, text);
        }
        return parsedDate;
    }
    /**
     * Provides instructions on the expected format of the response for the
     * CommaSeparatedListOutputParser.
     * @returns A string containing instructions on the expected format of the response.
     */
    getFormatInstructions() {
        return [
            `Your response should be a datetime string that matches the following pattern: "${this.format}".`,
            `Examples: 2011-10-05T14:48:00Z, 2019-01-01T00:00:00Z, 1932-04-21T04:42:23Z`,
            `Return ONLY this string, no other words!`,
        ].join("\n\n");
    }
}