Enhance your coding experience with VScode's intellisense feature when working with TypeScript

declare type Item = {
  name: string;
  location: string;
  source: string;
};

declare type CollectionOfItems = {
  [key: string]: Item;
};

export const CollectionOfItems: CollectionOfItems = {
   ITEM_1: {
    name: 'Item 1',
    location: 'path/item1',
    source: 'source_item_1',
  },
  ITEM_2: {
    name: 'Item 2',
    location: 'path/item2',
    source: 'source_item_2',
  },
} as const;

If I add the CollectionOfItems type annotation, IntelliSense disappears. Removing the type brings it back. How can I accurately define my constant Object while maintaining IntelliSense functionality?

I aim to effortlessly include a new item, like "ITEM_3", and benefit from IntelliSense throughout my project.

Answer №1

To ensure the fields defined in your variable can be used throughout the code, it's essential to modify the type BunchOfTypes. Currently, TypeScript is not aware that your constant includes properties like NAME_1, NAME_2, etc. One recommendation is to utilize enums as shown below:

export type Entry = {
  pagename: string;
  path: string;
  datasource: string;
};

export enum EntryKeys {
  NAME_1 = 'NAME_1',
  NAME_2 = 'NAME_2',
}

export type BunchOfEntrys = {
  [key in EntryKeys]: Entry;
};

export const bunchOfEntrys: BunchOfEntrys = {
   [EntryKeys.NAME_1]: {
    pagename: 'Name 1',
    path: 'path/name1',
    datasource: 'data_name_1',
  },
  [EntryKeys.NAME_2]: {
    pagename: 'Name 2',
    path: 'path/name2',
    datasource: 'data_name_2',
  },
};

By using this approach, you can manage the keys of the bunchOfTypes variable using the enum. This enables easy access to any entry through the syntax bunchOfTypes[EntryKeys.NAME_1].

It's worth noting that I've renamed the variable according to JavaScript convention for variable naming using camelCase.

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