@beparallel/langchain-ts/dist/lib/parser.js

Extracts Langchain prompts and generates TypeScript types.

import { pull } from 'langchain/hub';
import { Client } from 'langsmith';
export async function extractPrompts({ langchainApiKey, langchainTag, promptName, }) {
    const client = new Client({ apiKey: langchainApiKey });
    const prompts = await client.listPrompts({
        isPublic: false,
        isArchived: false,
        sortField: 'updated_at',
    });
    const result = [];
    for await (const prompt of prompts) {
        if (promptName && !prompt.repo_handle.includes(promptName)) {
            continue;
        }
        console.debug(`Generating prompt ${prompt.repo_handle}`);
        try {
            const chatPromptTemplate = await pull(`${prompt.repo_handle}:${langchainTag}`);
            result.push(chatPromptTemplate);
        }
        catch (error) {
            console.error(error);
        }
    }
    return result;
}