Export your iBooks (epub) on Mac OS X. Useful if you're moving your book collection away from Books.app (Mac OS X) to Calibre (open source and works on all major operating systems).

export-ibooks.js

const fs = require('fs');
const plist = require('simple-plist');
const slug = require('slug');
const homedir = require('os').homedir();

const {execSync} = require('child_process');
const SCRIPT_NAME = 'ibooks export';

console.time(SCRIPT_NAME);

try {
  const iBooksPlist = plist.readFileSync(`${homedir}/Library/Containers/com.apple.BKAgentService/Data/Documents/iBooks/Books/Books.plist`, 'utf8');

  if (iBooksPlist.Books.length === 0) {
    throw Error('You do not have any books to export.');
    console.timeEnd(SCRIPT_NAME);
  }

  iBooksPlist.Books.forEach(({path, artistName, itemName}) => {
    const source = path;
    const parts = path.split('.');
    const fileExtension = parts[parts.length - 1];

    const fileName = slug(`${artistName} - ${itemName}`);
    const filePath = `${homedir}/Downloads/${fileName}.${fileExtension}`;

    // ????
    if (source.match('/Containers')) {
      console.log('Unable to copy ', source);
      return;
    }

    console.log(`Exporting ${fileName} ...`);
    execSync(`cp -R "${source}" "${filePath}"`); // .epub is really a folder
  });

  console.timeEnd(SCRIPT_NAME);

} catch (err) {
  console.error(`ERROR > ${err.message}`);
  console.timeEnd(SCRIPT_NAME);
}