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3.1: Handling types - Coggle Diagram

- - - - only understood by TypeScript
        
        removed when compiled to JavaScript
      - defines the type of the variable
- - - - not considered best practice
  - - - from the values used to initialise them
- - - - only knows about core types
        
        number
        
        string
        
        boolean
    - - eg. in if conditions
  - - - during development
    - - can catch errors earlier