groupby-typename/dist/types.d.ts

Type-safe and tested utility to easily group an array of GraphQL objects by their typename

//#region src/types.d.ts
/**
 * Represents a GraphQL object with minimally a `__typename` property.
 */
type GraphQLObject = {
  __typename: string;
  [key: PropertyKey]: unknown;
};
/**
 * Defines a type representing a grouping of GraphQL objects based on their `__typename` property.
 *
 * Basically a type representing of a group by operation on an array of GraphQL objects.
 */
type GroupedGraphQLObjects<Objects extends readonly GraphQLObject[]> = { [K in Objects[number]['__typename']]?: Extract<Objects[number], {
  __typename: K;
}>[] } & {};
//#endregion
export { GraphQLObject, GroupedGraphQLObjects };