Feat request: Typescript support

[joandvgv]

Hi! Just wanted to know the feasibility of adding declaration typescript files (since the project is solely built on javascript) This would be a great addition for pure Typescript projects.

Thanks,

[joandvgv]

I know this is a zero-dependency package but here's my typescript definition file for the configuration object based on the documentation
@types/apollo-cache-updater.d.ts

type CacheSearchOperator = "AND" | "AND_EDGE" | "OR" | "OR_EDGE" | "ANY";

type CacheOperationType = "ADD" | "REMOVE" | "MOVE";

type CacheRowType = "TOP" | "BOTTOM" | "SORT";
type CacheRowField = string | undefined;

type OperationI = {
  type: CacheOperationType = "ADD";
  row: {
    type: CacheRowType = "TOP";
    field: CacheRowField;
  };
};

type QueryVariables = Record<string, unknown>;

declare module "apollo-cache-updater" {
  export default function ApolloCacheUpdater<T, K>(options: {
    proxy: import("@apollo/client").ApolloCache<T>;
    queriesToUpdate: import("@apollo/client").DocumentNode[];
    mutationResult: K;
    searchOperator?: SearchOperator = "AND";
    operation?: OperationI;
    switchVars?: QueryVariables;
    searchVariables?: QueryVariables;
    ID?: string = "id";
  }): boolean;
}

This is working in my React project successfully, but it can be easily modified to work with yours.

I guess for this project we could "steal" the type definitions for ApolloCache and DocumentNode and keep it a zero-dependency package. It would be interesting to check whether all Apollo clients have these same type definitions, though.

I'm more than happy to contribute to this if needed, not a typescript expert but a huge fan :)