Anki-reader NPM

anki-reader

A .apkg and .anki2 file reader module. Compatable node, bun, and browser runtimes.

Usage

Installation

Using npm:

$ npm install anki-reader

Using bun:

$ bun install anki-reader

Usage

After installation, pass in .apkg or .anki2 files to their reader functions. This returns a collection object, which can be used to retrieve deck and card information. Additionally, if a .apkg file is returned, media files are also extracted.

import { readAnkiPackage } from 'anki-reader';

const ankiFile = ...
readAnkiPackage(ankiFile)
  .then((extractedPackage) => {
    const { collection, media } = extractedPackage;

    const decks = collection.getDecks();
    for (const [deckId, deck] of Object.entries(decks)) {
      console.log(deckId, deck.getRawDeck());
      for (const [cardId, card] of Object.entries(deck.getCards())) {
        console.log(cardId, card.getRawCard());
      }
    }

    for (const [name, blob] of Object.entries(media)) {
      console.log(name, blob);
    }
  })

Alternatively, you can read a collection file directly from a URL with readFromUrl like so:

import { readFromUrl } from 'anki-reader';

readFromUrl('http://127.0.0.1:8081/collection.anki2')
  .then((collection) => {
    const decks = collection.getDecks();
    for (const [deckId, deck] of Object.entries(decks)) {
      console.log(deckId, deck.getRawDeck());
      for (const [cardId, card] of Object.entries(deck.getCards())) {
        console.log(cardId, card.getRawCard());
      }
    }
  })

For more in-depth examples, see the story directory.

Browser

If you intend to use anki-reader in a browser runtime, you must configure additional settings so sql.js can locate the wasm file. See the official sql.js documentation and this React example.

React

// App.js
import sqlWasm from "!!file-loader?name=sql-wasm-[contenthash].wasm!sql.js/dist/sql-wasm.wasm";

export default function App() {
  const ankiFile = ...
  readAnkiCollection(ankiFile, {
    sqlConfig: { 
      locateFile: () => sqlWasm 
    },
  }

  ...

}

// webpack.config.js
module.exports = {
    webpack: {
        configure: {
            // See https://github.com/webpack/webpack/issues/6725
            module:{
                rules: [{
                    test: /\.wasm$/,
                    type: 'javascript/auto',
                }]
                ...
            }
        }
    }
};

API

Anki collections are stored as sqlite databases, which is what anki-reader queries. The anki-reader follows similarly to the data structure of the .anki2 database structure, which can be referenced here.

This package also provides methods to get the raw database objects or models. For example, AnkiCollection.getRawCollection() may be used to get the raw collection database, and can then use the sql.js API to query.