Step One: On lines 51 and 52 of main.js, add these two lines of code, then save:
width: 300,
height: 450,
Step Two: See the app in progress.
npm start
Step Three: While hovering over the app, type CMD + Option + I (Control + Shift + I for Windows) to open Google Dev Tools.
Step Four: Quit the process and return to main.js.
Step Five: Set line 56, resizable, to true, and save.
resizable: true,
Step Six: Relaunch the app to test resizable windows.
npm start
Step Seven: Open Dev Tools again (CMD + Option + I OR Control + Shift + I) and find the error in the console tab.
Step Eight: Remove line 93 from index.js, which is causing the error in the console dialog, and save.
REMOVE: sendNotification(weather)
Step Nine: Terminate and relaunch the app.
npm start
Step Ten: Open DevTools again to determine if the console error disappears.