Function provideWith

repos/effect/packages/effect/src/Layer.ts:1277–1296

(
  self: Layer<any, any, any>,
  that: Layer<any, any, any> | ReadonlyArray<Layer<any, any, any>>,
  f: (
    selfContext: Context.Context<any>,
    thatContext: Context.Context<any>
  ) => Context.Context<any>
)

 *   readonly query: (sql: string) => Effect.Effect<string>
 * }>()("Database") {}
 *
 * class Logger extends Context.Service<Logger, {
 *   readonly log: (msg: string) => Effect.Effect<void>
 * }>()("Logger") {}
 *
 * const dbLayer = Layer.succeed(Database, {
 *   query: Effect.fn("Database.query")((sql: string) => Effect.succeed("result"))
 * })
 * const loggerLayer = Layer.succeed(Logger, {
 *   log: Effect.fn("Logger.log")((_msg: string) => Effect.void)
 * })
 *
 * const mergedLayer = Layer.merge(dbLayer, loggerLayer)
 * const program = Database.use((database) => database.query("SELECT 1"))
 * Effect.runSync(Effect.provide(program, mergedLayer)) // => "result"
 * ```
 *
 * @see {@link mergeAll} for merging several layers at once
 *
 * @category zipping
 * @since 2.0.0
 */
export const merge: {