Do I need to load all the documents again every time I load an existing index from a file?

[rafaelcamaram]

Is there an existing issue for this?

• [X] I have searched the existing issues

Your question

I'm currently storing an index in a .json file and I'd like to be able to read it later (once the app restarts) and be able to query against it again.

Unfortunately, it's not returning the items metadata when I read the index from file. I'm assuming that this is because fuse.js doesn't store the item's metadata but only the indexes?

if (fs.existsSync('./fuse-index.json')) {
    // File exists, so read it from file and create a new fuse
    const fsFile = JSON.parse(fs.readFileSync('./fuse-index.json', 'utf8'));

    const storedIndex = Fuse.parseIndex<Moment>(fsFile);

    // Do I need to add all my data here again?
    database = new Fuse<Moment>([], fuseOptions, storedIndex);
  } else {
    // File does not exists, create a new index from scratch
    database = new Fuse<Moment>([], fuseOptions);

    updateLocalIndex();
  }

The first time I run the app, it probably do everything in memory (and that's why it works fine) and then it outputs me the result below when I try to query:

[
      {
        item: {
          date: '2023-11-06T15:05:41.764Z',
          text: [{ text: 'My Search', x1: 1, x2: 2, y1: 3, y2: 4 }],
          sourceName: 'My Search',
          image: 'string',
        },
        refIndex: 0,
        matches: [
          { indices: [[0, 5]], value: 'My Search', key: 'sourceName' },
          { indices: [[0, 5]], value: 'My Search', key: 'text.text', refIndex: 0 },
        ],
        score: 1.0947644252537633e-47,
      },
    ];

But, when I open the app again and it reads from disk, it didn't return me the item property:

[
      {
        refIndex: 0,
        matches: [
          { indices: [[0, 5]], value: 'My Search', key: 'sourceName' },
          { indices: [[0, 5]], value: 'My Search', key: 'text.text', refIndex: 0 },
        ],
        score: 1.0947644252537633e-47,
      },
    ];

Question: is there any way to make fuse.js to store the metadata and get it working?

cc: @krisk

[inmativ]

I want to use Fuse for my task and I had a similar question. Is it necessary to pass as the first argument all the data that is already present in the index? Is there any way to make the first argument easier?

I have about 100 text documents. I want to pre-index them and don’t want to drag them entirely in runtime.

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