This should be "--reload" (two hyphens).

This should be "/".

Use --template typescript instead.

Add this to application.conf, which is usually in projectRoot/conf.

I would omit this. It looks like a typo.

At bottom, I suggest adding "When you are done with this notebook, close the current browser window/tab."

It wasn't clear that I needed to go through "How to use this cookbook" before clicking links in this TOC. I wound up installing jupyter, instead of using MyBinder. D-:

Need to press Tab (without holding Shift) first.

You may need to add this at the top of the file to use the path library:

const path = require('path');

The text below goes in webpack.config.js .

This doesn't seem to work with Windows 10.

For commonjs, add this to the compilerOptions section of your tsconfig.json :

"module": "commonjs",

Enter reload (no quotes) first.

Place before the script tag for fastops.js .

Case is important. The S is capitalized.

This goes inside create.

The first ledge platform uses the same 'ground' texture as the ground platform uses.

This is the ground platform at the bottom of the screen. The name is a bit confusing, because it is the same as the 'ground' texture (initialized in preload).

The order of imports is significant. Here, dom.document references the dom imported at the previous line.

Place these lines inside the TutorialApp object (before the final closing brace).

Type exit in sbt before running npm.

Further, my npm issues a lot of warnings concerning package.json, license field, etc. It seems OK, though.

Run sbt again after npm finishes.