Dependencies in Service methods

import * as Command from "@effect/platform/Command";
import * as Context from "effect/Context";
import * as Effect from "effect/Effect";
import * as Layer from "effect/Layer";

class MyService extends Context.Tag(
    "@codecrafters/redis/app/command/index/MyService",
)<MyService, { doThing: () => Effect.Effect<unknown, unknown> }>() { }

const MyServiceLive = Layer.succeed(
    MyService,
    {
        doThing() {
            return Command.exitCode(Command.make('')); //  Type 'CommandExecutor' is not assignable to type 'never'.
        },
    },
);

const MyServiceLive = Layer.effect(
 MyService,
 Effect.gen(function* () {
  const dep = yield* CommandExecutor.CommandExecutor;
  return {
   doThing() {
    return Command.exitCode(Command.make("")).pipe(
     Effect.provideService(CommandExecutor.CommandExecutor, dep),
    );
   },
  };
 }),
);