gatsby-source-prismic/src/lib/setToCache.ts

Gatsby source plugin for building websites using Prismic as a data source

import * as RTE from "fp-ts/ReaderTaskEither";
import { pipe } from "fp-ts/function";

import { Dependencies } from "../types";

/**
 * Sets a value to the environment's `cache` with the given key.
 *
 * @param key - Key to identify a value in the cache.
 *
 * @returns A function that accepts a value to set to the environment's `cache`
 *   with the given key.
 */
export const setToCache =
	<T>(key: string) =>
	(value: T): RTE.ReaderTaskEither<Dependencies, never, T> =>
		pipe(
			RTE.ask<Dependencies>(),
			RTE.chain((deps) => RTE.fromTask(() => deps.cache.set(key, value))),
			RTE.map(() => value),
		);