Get

async get({
    ids: string[],
    include?: string[],   // default: ['vector', 'contents', 'metadata']
}): Promise<GetResultItem[]>

{
    id: string,         // Always returned
    vector?: number[],  // When 'vector' is in include
    contents?: string,  // When 'contents' is in include; '' if the item has no contents
    metadata?: object,  // When 'metadata' is in include
}

const results = await index.get({ ids: ['doc1', 'doc2', 'missing-id'], include: ['contents', 'metadata'] });

for (const item of results) {
    console.log(item.id, JSON.stringify(item.contents), item.metadata);
}
// Output:
// doc1 "First document" {}
// doc2 "" { category: 'news' }

await index.upsert({
    items: [{ id: 'img1', vector: [0.1, 0.2, 0.3, 0.4], contents: new Uint8Array([0x89, 0x50, 0x4e, 0x47]) }],
});

const [item] = await index.get({ ids: ['img1'], include: ['contents'] });
const raw = Buffer.from(item.contents ?? '', 'base64');
console.log(raw);
// Output: <Buffer 89 50 4e 47>