Prerequisite

1. Download and install NodeJS LTS

2. Check your NodeJS installation by typing

   node -v   # version 14.15.4 or later
   npm -v    # version 6.14.10 or later
   ```

3. Install typescript

   npm i -g typescript
   ```

4. Verify that the TypeScript transpiler is installed

   tsc --version   # Version 4.x
   ```
   
   :::tip
   A transpiler is like a compiler, but instead of generating low-level maching instructions, a transpiler generates the output as another high-level language. Specifically, `tsc` transpiles TypeScript into JavaScript.
   :::