Description: The ‘Index Signature’ is a feature of TypeScript that allows defining the type of properties in an object when the property names are not known in advance. This is particularly useful in situations where one works with objects that may have dynamic properties or when interacting with data structures that do not have a fixed schema. The index signature is defined using bracket syntax, where the type of the keys and the type of the values are specified. For example, one can define an object that has string keys and values of any type, allowing for great flexibility in data manipulation. This feature is fundamental in modern JavaScript development, as it enables developers to create applications that can handle data in a more dynamic and typed manner, improving the robustness and maintainability of the code. Additionally, the index signature contributes to autocompletion and type checking in code editors, facilitating development and reducing the likelihood of runtime errors.
