Word Count tutorial from https://flight-manual.atom.io/hacking-atom/sections/package-word-count/

zenkbarieswordcount.md

  'use babel';

  import ZenkbarieswordcountView from './zenkbarieswordcount-view';
  import { CompositeDisposable } from 'atom';

  export default {

    zenkbarieswordcountView: null,
    modalPanel: null,
    subscriptions: null,

    activate(state) {
      this.zenkbarieswordcountView = new ZenkbarieswordcountView(state.zenkbarieswordcountViewState);
      this.modalPanel = atom.workspace.addModalPanel({
        item: this.zenkbarieswordcountView.getElement(),
        visible: false
      });

      // Events subscribed to in atom's system can be easily cleaned up with a CompositeDisposable
      this.subscriptions = new CompositeDisposable();

      // Register command that toggles this view
      this.subscriptions.add(atom.commands.add('atom-workspace', {
        'zenkbarieswordcount:toggle': () => this.toggle()
      }));
    },

    deactivate() {
      this.modalPanel.destroy();
      this.subscriptions.dispose();
      this.zenkbarieswordcountView.destroy();
    },

    serialize() {
      return {
        zenkbarieswordcountViewState: this.zenkbarieswordcountView.serialize()
      };
    },

    toggle() {
      if (this.modalPanel.isVisible()) {
        this.modalPanel.hide();
      } else {
        const editor = atom.workspace.getActiveTextEditor();
        const words = editor.getText().split(/\s+/).length;
        this.ZenkbarieswordcountView.setCount(words);
        this.modalPanel.show();
    }
        // console.log('Zenkbarieswordcount was toggled!');
        // return (
        //   this.modalPanel.isVisible() ?
        //   this.modalPanel.hide() :
        //   this.modalPanel.show()
        // );
      }

  }