39 lines
1.4 KiB
JavaScript
39 lines
1.4 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.loadChain = void 0;
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const base_js_1 = require("./base.cjs");
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const hub_js_1 = require("../util/hub.cjs");
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const load_js_1 = require("../util/load.cjs");
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const parse_js_1 = require("../util/parse.cjs");
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const loadChainFromFile = async (file, path, values = {}) => {
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const serialized = (0, parse_js_1.parseFileConfig)(file, path);
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return base_js_1.BaseChain.deserialize(serialized, values);
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};
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/**
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* Load a chain from {@link https://github.com/hwchase17/langchain-hub | LangchainHub} or local filesystem.
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*
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* @example
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* Loading from LangchainHub:
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* ```ts
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* import { loadChain } from "langchain/chains/load";
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* const chain = await loadChain("lc://chains/hello-world/chain.json");
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* const res = await chain.call({ topic: "my favorite color" });
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* ```
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*
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* @example
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* Loading from local filesystem:
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* ```ts
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* import { loadChain } from "langchain/chains/load";
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* const chain = await loadChain("/path/to/chain.json");
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* ```
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*
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* @deprecated Use newer {@link https://api.js.langchain.com/functions/langchain.load.load.html | load method}.
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*/
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const loadChain = async (uri, values = {}) => {
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const hubResult = await (0, hub_js_1.loadFromHub)(uri, loadChainFromFile, "chains", new Set(["json", "yaml"]), values);
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if (hubResult) {
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return hubResult;
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}
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return (0, load_js_1.loadFromFile)(uri, loadChainFromFile, values);
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};
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exports.loadChain = loadChain;
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