To enable word-wrap (to wrap long lines) by default in VSCode navigate to File Preferences Settings search for wrap (on) or add this via ctrl-shift-P look for “Preferences: Open User Settings (JSON):

## 
{ 
    // added 20180108 word wrapping on 
    "editor.wordWrap": "on" 
} 
## 

(The ## is for formatting here and can be ignored.)