72 lines
3.1 KiB
JavaScript
72 lines
3.1 KiB
JavaScript
"use strict";
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
exports.collapseDocs = exports.splitListOfDocs = void 0;
|
|
/**
|
|
* Splits a list of documents into sublists based on a maximum token limit.
|
|
*
|
|
* @param {Document[]} docs - The list of documents to be split.
|
|
* @param {Function} lengthFunc - A function that calculates the number of tokens in a list of documents.
|
|
* @param {number} tokenMax - The maximum number of tokens allowed in a sublist.
|
|
*
|
|
* @returns {Document[][]} - A list of document sublists, each sublist contains documents whose total number of tokens does not exceed the tokenMax.
|
|
*
|
|
* @throws {Error} - Throws an error if a single document has more tokens than the tokenMax.
|
|
*/
|
|
function splitListOfDocs(docs,
|
|
// eslint-disable-next-line @typescript-eslint/no-explicit-any
|
|
lengthFunc, tokenMax) {
|
|
const newResultDocList = [];
|
|
let subResultDocs = [];
|
|
for (const doc of docs) {
|
|
subResultDocs.push(doc);
|
|
const numTokens = lengthFunc(subResultDocs);
|
|
if (numTokens > tokenMax) {
|
|
if (subResultDocs.length === 1) {
|
|
throw new Error("A single document was longer than the context length, we cannot handle this.");
|
|
}
|
|
newResultDocList.push(subResultDocs.slice(0, -1));
|
|
subResultDocs = subResultDocs.slice(-1);
|
|
}
|
|
}
|
|
newResultDocList.push(subResultDocs);
|
|
return newResultDocList;
|
|
}
|
|
exports.splitListOfDocs = splitListOfDocs;
|
|
/**
|
|
* Collapses a list of documents into a single document.
|
|
*
|
|
* This function takes a list of documents and a function to combine the content of these documents.
|
|
* It combines the content of the documents using the provided function and merges the metadata of all documents.
|
|
* If a metadata key is present in multiple documents, the values are concatenated with a comma separator.
|
|
*
|
|
* @param {Document[]} docs - The list of documents to be collapsed.
|
|
* @param {Function} combineDocumentFunc - A function that combines the content of a list of documents into a single string. This function should return a promise that resolves to the combined string.
|
|
*
|
|
* @returns {Promise<Document>} - A promise that resolves to a single document with combined content and merged metadata.
|
|
*
|
|
* @throws {Error} - Throws an error if the combineDocumentFunc does not return a promise or if the promise does not resolve to a string.
|
|
*/
|
|
async function collapseDocs(docs, combineDocumentFunc) {
|
|
const result = await combineDocumentFunc(docs);
|
|
return { pageContent: result, metadata: collapseDocsMetadata(docs) };
|
|
}
|
|
exports.collapseDocs = collapseDocs;
|
|
function collapseDocsMetadata(docs) {
|
|
const combinedMetadata = {};
|
|
for (const key in docs[0].metadata) {
|
|
if (key in docs[0].metadata) {
|
|
combinedMetadata[key] = String(docs[0].metadata[key]);
|
|
}
|
|
}
|
|
for (const doc of docs.slice(1)) {
|
|
for (const key in doc.metadata) {
|
|
if (key in combinedMetadata) {
|
|
combinedMetadata[key] += `, ${doc.metadata[key]}`;
|
|
}
|
|
else {
|
|
combinedMetadata[key] = String(doc.metadata[key]);
|
|
}
|
|
}
|
|
}
|
|
return combinedMetadata;
|
|
}
|