Improve training

training/front-end/01-modern-javascript.md

@@ -2,7 +2,7 @@
 <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
 ## Table of Contents
 
-- [Modern JavaScript/TypeScript](#modern-javascripttypescript)
+- [Modern JavaScript](#modern-javascript)
   - [Quirks](#quirks)
     - [Printing and interacting with the console](#printing-and-interacting-with-the-console)
     - [Comparing scalar, arrays, and objects](#comparing-scalar-arrays-and-objects)
@@ -31,14 +31,11 @@
     - [Chaining promises](#chaining-promises)
   - [Async functions](#async-functions)
   - [Modules](#modules)
-  - [TypeScript](#typescript)
-    - [Differences between TypeScript and JavaScript](#differences-between-typescript-and-javascript)
-    - [An introduction to TypeScript's type system](#an-introduction-to-typescripts-type-system)
   - [References](#references)
 
 <!-- END doctoc generated TOC please keep comment here to allow auto update -->
 
-# Modern JavaScript/TypeScript
+# Modern JavaScript
 
 Note: run code quickly with https://codesandbox.io/s/
 
@@ -256,12 +253,6 @@ ES Module syntax:
 - default export and imports
 - renaming imports
 
-## TypeScript
-
-### Differences between TypeScript and JavaScript
-
-### An introduction to TypeScript's type system
-
 ## References
 
 - [ES5 to ESNext — here’s every feature added to JavaScript since 2015](https://www.freecodecamp.org/news/es5-to-esnext-heres-every-feature-added-to-javascript-since-2015-d0c255e13c6e/)

training/front-end/02-typescript.md

@@ -0,0 +1,20 @@
+<!-- START doctoc generated TOC please keep comment here to allow auto update -->
+<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
+## Table of Contents
+
+- [TypeScript](#typescript)
+  - [Differences between TypeScript and JavaScript](#differences-between-typescript-and-javascript)
+  - [An introduction to TypeScript's type system](#an-introduction-to-typescripts-type-system)
+  - [References](#references)
+
+<!-- END doctoc generated TOC please keep comment here to allow auto update -->
+
+# TypeScript
+
+## Differences between TypeScript and JavaScript
+
+## An introduction to TypeScript's type system
+
+## References
+
+- [ES5 to ESNext — here’s every feature added to JavaScript since 2015](https://www.freecodecamp.org/news/es5-to-esnext-heres-every-feature-added-to-javascript-since-2015-d0c255e13c6e/)