Anticipate a nested attribute within a templated function parameter that is determined by the type of the template

My goal is to ensure that the "options" property of the parameter object includes the "label" property.

I attempted to achieve this, but encountered compilation errors in my code.

interface BaseOptionType {
  label: string;
}

interface CreatableAutoCompleteProps<OptionType extends BaseOptionType> {
  name?: string;
  options: OptionType;
}

const CreatableAutoComplete = <_OptionType,>({
  name,
  options,
}: CreatableAutoCompleteProps<_OptionType>): number => {
  return 0;
};

export default CreatableAutoComplete;

Upon compiling, I encountered the following error:

(type parameter) _OptionType in <_OptionType>({ name, options, }: CreatableAutoCompleteProps<_OptionType>): number

Type '_OptionType' does not satisfy the constraint 'BaseOptionType'.ts(2344)

What would be the correct approach to address this issue?

Answer №1

It seems that the type '_OptionType' is not fulfilling the requirement of 'BaseOptionType'

In order to resolve this issue, you may want to have _OptionType extend BaseOptionType.

const CreatableAutoComplete = <_OptionType extends BaseOptionType,>({
  name,
  options,
}: CreatableAutoCompleteProps<_OptionType>): number => {
  return 0;
};

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