We cannot use keywords as identifier names.
Below is a list of few keywords in TypeScript:
| break | case | var | module |
| public | null | in | finally |
| any | new | package | continue |
| as | type | if | number |
| private | super | for | return |
| do | try | implement | extends |
| switch | typeof | get | else |
| export | void | new | false |
| function | let | const | catch |
| break | case | var | yield |
| interface | static | true | this |
| while | enum | instanceof | string |
| throw | any |