/**
 *
 * This script removes the English readings from the JMDict dictionary file used
 * by Yomichan. Using this lets you get the JMDict frequency information without
 * the English dictionary definitions.
 *
 * Pass the filename in as a command line argument.
 *
 * Usage:
 *
 *  1. Download the JMDict zip file from the Yomichan website
 *  2. Unzip it
 *  3. Run all the term_bank files through this script and replace the output
 *     with the original file
 *  4. Zip everything back up
 *  5. Load the new zip file into Yomichan
 *
 **/
const fs = require('fs');

// get filename from command line arg
const filename = process.argv[2];

// read file
const json = JSON.parse(fs.readFileSync(filename, 'utf8'));

// get rid of english definitions
json.forEach(e => e[5] = []);

// print back out
console.log(JSON.stringify(json));