Issues with tsc command when following FEM video on Windows 10 (v2)

[Magneticmagnum]

**System Information**

Terminal: git-bash
NodeJS version: 10.15.1```
Editor: Visual Studio Code

I was following the commands as described in the FEM video flags (https://frontendmasters.com/courses/typescript-v2/flags/) and ran into the following error when running tsc src/index.ts:

$ tsc src/index.ts
error TS2468: Cannot find global value 'Promise'.

src/index.ts:6:14 - error TS2585: 'Promise' only refers to a type, but is being used as a value here. Do you need to change your target library? Try changing the `lib` compiler option
to es2015 or later.

6   return new Promise(res => setTimeout(res, n));
               ~~~~~~~

src/index.ts:20:2 - error TS2705: An async function or method in ES5/ES3 requires the 'Promise' constructor.  Make sure you have a declaration for the 'Promise' constructor or include
'ES2015' in your `--lib` option.

20 (async () => {
    ~~~~~~~~~~~~~


Found 3 errors.

Steps to Reproduce:

$ git clone https://github.com/mike-works/typescript-fundamentals.git
$ cd tscript
$ cd examples/hello-ts
$ tsc src/index.ts

• Expected behavior
  To have index.ts compiled as in the video

[mike-north]

This looks like you may not have been using the vscode workspace. What you're seeing is that the source is being treated as something older than ES2017 code (the first version of JS that officially included async and await)