The element is implicitly classified as an 'any' type due to the index expression not being of type 'number'

Encountering a specific error, I am aware of what the code signifies but unsure about the correct interface format:

An error is occurring due to an 'any' type being implicitly assigned as the index expression is not of type 'number'.

Here are the interfaces:

export declare interface Category {
    id: string;
    name: string;
    parent_id: string;
}

export declare interface CategoriesMap {
    [key: string]: Category;
}

Related component snippet:

private listOfSubcategories: CategoriesMap[] = [];

private selectCategory($event: any, index: string) {
        this.category = this.listOfSubcategories[index][$event.target.value];
    }

Thank you.

Answer №1

The array this.listOfSubcategories contains the data, while index is interpreted as a string. To access the correct element from the array, it should be converted to a number.

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