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Must Learn, English - Coggle Diagram

- - - - extends
      - use only objects and functions & Object shapes
    - - unknown
    - - Access Modifier Keywords
        
        public
        
        protected
        
        private
        
        static
        
        readonly
      - implements
      - readonly
      - Definite Assignment !
      - abstract
      - Class types const invoices: Incoive[] = []
    - - use types for tuples
      - use for every thing
      - use for function arguments
    - - T extends Point2D
      - K extends keyof Something
    - - IComponentProps
      - IComponentState
    - - Step 1
        
        Rename all .js to .ts
        
        noImplicitAny: false
        
        fix only things that are not type-checking, or causing compile error
        
        commit your code and make a pull request
      - Step 2
        
        noImplicitAny: true
        
        commit your code and make a pull request
      - Step 3
        
        strictNullChecks: true
        
        strict: true
        
        strictFunctionTypes: true
        
        strictBindCallApply: true
        
        commit your code and make a pull request
    - - Partial
      - Pick
      - Extract
    - - Definite Assignment !
- - - - Entry
      - Output
      - Loaders
        
        transforms files before putting it in dependency graph
      - Plugins
- - - - monkey patching
      - mock functions jest.fn => keep track of function with what is been called, how many times is been called...
      - jest.spyOn => removes monkey patching and keeping track of original method
        
        you have to call mockRestore() at the end
        
        you have to initiate fn with mockImplementation
        
        this is another way of monkey patching
      - jest.mock(path, () => { return {} })
        
        for clean up you have to run mockRest()
      - __mocks__
    - - ESLint
      - Prettier
      - tsconfig
      - husky
      - lint-staged