@langchain/core/dist/utils/chunk_array.js

Core LangChain.js abstractions and schemas

export const chunkArray = (arr, chunkSize) => arr.reduce((chunks, elem, index) => {
    const chunkIndex = Math.floor(index / chunkSize);
    const chunk = chunks[chunkIndex] || [];
    // eslint-disable-next-line no-param-reassign
    chunks[chunkIndex] = chunk.concat([elem]);
    return chunks;
}, []);