data/raw/mulberry/scripts/mkzip.js

// require modules
var fs = require('fs');
var archiver = require('archiver');

const VERSION = require('../package.json').version;

// create a file to stream archive data to.
var output = fs.createWriteStream(`mulberry-symbols.zip`);
var archive = archiver('zip', {
  zlib: { level: 9 }, // Sets the compression level.
});

// listen for all archive data to be written
// 'close' event is fired only when a file descriptor is involved
output.on('close', function() {
  console.log(archive.pointer() + ' total bytes added to archive');
});

// This event is fired when the data source is drained no matter what was the data source.
// It is not part of this library but rather from the NodeJS Stream API.
// @see: https://nodejs.org/api/stream.html#stream_event_end
output.on('end', function() {
  console.log('Data has been drained');
});

// good practice to catch warnings (ie stat failures and other non-blocking errors)
archive.on('warning', function(err) {
  if (err.code === 'ENOENT') {
    console.log(err);
    // log warning
  } else {
    // throw error
    throw err;
  }
});

// good practice to catch this error explicitly
archive.on('error', function(err) {
  throw err;
});

// pipe archive data to the file
archive.pipe(output);

// append a file from string
archive.append(`Mulberry Symbols version: ${VERSION}`, { name: 'VERSION.txt' });

// append a files
archive.file('LICENSE.txt', { name: 'LICENSE.txt' });
archive.file('scripts/data/symbol-info.csv', { name: 'symbol-info.csv' });
archive.file('categories/categories-en.pdf', {name: 'categories-en.pdf'}),
archive.file('categories/categories-fr.pdf', {name: 'categories-fr.pdf'});

// append files from a sub-directory and naming it `new-subdir` within the archive
archive.directory('EN/', 'EN-symbols');

// finalize the archive (ie we are done appending files but streams have to finish yet)
// 'close', 'end' or 'finish' may be fired right after calling this method so register to them beforehand
archive.finalize();