Using Mapped Types in TypeScript
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Questions and Answers

What is the purpose of using mapped types in TypeScript?

  • To delete existing types and replace them with new ones
  • To restrict the number of properties in a type
  • To create new types based on existing types with transformed properties (correct)
  • To confuse developers by introducing unnecessary complexity

    • In the given code snippet, what data type is associated with each field of the FormFields object?

  • object
  • number
  • string | null (correct)
  • boolean

    • How does changing the FormFields type affect the FormErrors type in the provided code?

  • FormErrors will throw an error
  • FormErrors will be deleted
  • FormErrors will be automatically updated to reflect the changes (correct)
  • FormErrors will remain unaffected by changes in FormFields

    • What happens to the FormErrors object if a new field is added to FormFields?

    <p>The FormErrors object will reflect the new field automatically</p> Signup and view all the answers

    Which of the following best describes the relationship between FormFields and FormErrors?

    <p>FormErrors is a mapped type related to FormFields</p> Signup and view all the answers

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