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import { getModelBuilder } from "https://esm.town/v/webup/getModelBuilder";
export const parserSampleJSON = (async () => {
const { PromptTemplate } = await import("npm:langchain/prompts");
const { StructuredOutputParser } = await import(
"npm:langchain/output_parsers"
);
// With a `StructuredOutputParser` we can define a schema for the output.
const parser = StructuredOutputParser.fromNamesAndDescriptions({
answer: "answer to the user's question",
source: "source used to answer the user's question, should be a website.",
});
const formatInstructions = parser.getFormatInstructions();
const prompt = new PromptTemplate({
template:
"Answer the users question as best as possible.\n{format_instructions}\n{question}",
inputVariables: ["question"],
partialVariables: { format_instructions: formatInstructions },
});
const builder = await getModelBuilder();
const model = await builder();
const input = await prompt.format({
question: "What is the capital of France?",
});
const response = await model.call(input);
console.log(input);
return await parser.parse(response);
})();
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September 3, 2024