gulp-appdmg.js


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const appdmg = require('appdmg');
const through = require('through2');
const gutil = require('gulp-util');

const PluginError = gutil.PluginError;
const PLUGIN_NAME = 'gulp-appdmg';

module.exports = function(options) {
  const stream = through.obj(function(file, encoding, next) {
    next();
  }, function(callback) {
    const self = this;
    const ee = appdmg(options);

    ee.on('progress', function(info) {
      gutil.log(`${info.current}/${info.total} ${info.type} ${info.title || info.status}`);
    });

    ee.on('error', function(err) {
      self.emit('error', new PluginError(PLUGIN_NAME, err));
      callback();
    });

    ee.on('finish', callback);
  });

  // returning the file stream
  stream.resume();
  return stream;
};