Transforming a singular function into a versatile, reusable function with the help of Typescript

In my component, I have a function dedicated to removing duplicate values from an array.

const removeDuplicateScenarios = (scenariosList: Scenario[]): Scenario[] => {
  return _.filter(scenariosList, el => _.filter(scenariosList, e => e.id === el.id).length === 1);
};

However, I want to enhance its reusability by avoiding explicit type definitions but still ensuring it functions properly.

const removeDuplicateValues = (values: []): [] => {
  return _.filter(values, el => _.filter(values, e => e.id === el.id).length === 1);
};

Would using `any` as the type be suitable in this scenario?

Despite my efforts, I encountered the following errors:

TS2322: Type 'never[]' is not assignable to type '[]'.   
Types of property 'length' are incompatible.
Type 'number' is not assignable to type '0'.

Please provide guidance on how to resolve this issue.

Answer №1

Is it possible to utilize a generic instead? For detailed information, refer to the documentation at https://www.typescriptlang.org/docs/handbook/generics.html

Here is a sample code snippet. You can find more comprehensive details in the TypeScript documentation.

function removeDuplicateValues<T>(values: T[]): T[] => {
  return _.filter(values, el => _.filter(values, e => e.id === el.id).length === 1);
};

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