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    Interface ServiceProvider<Ports, CfgSchema, ProvidedPorts, Context, ServiceInput>

    A service provider that can extend or replace ports during app initialization.

    Providers support:

    • Configuration via Standard Schema (any compatible library: Zod, Valibot, etc.)
    • Returning ports with new capabilities (e.g., cache, mailer)
    • Replacing existing ports by returning the same key
    • Optional start/stop hooks
    const cacheProvider = createProvider({
      name: "cache-redis",
      config: {
        schema: z.object({ URL: z.string().url() }),
        envPrefix: "REDIS_",
      },
      async setup({ config }) {
        const client = new Redis(config.URL);
        return {
          ports: {
            cache: {
              get: (key) => client.get(key),
              set: (key, value) => client.set(key, value),
            },
          },
          stop: () => client.quit(),
        };
      },
    });
    interface ServiceProvider<
        Ports,
        CfgSchema extends StandardSchemaV1 = StandardSchemaV1<void, void>,
        ProvidedPorts extends ProviderPorts = NoProvidedPorts,
        Context = unknown,
        ServiceInput = void,
    > {
        __providedPorts?: ProvidedPorts;
        config?: ProviderConfigDef<CfgSchema>;
        name: string;
        setup(
            ctx: {
                config: InferOutput<CfgSchema> | undefined;
                createServiceContext: ProviderServiceContextFactory<
                    Context,
                    ServiceInput,
                >;
                ports: Readonly<Ports>;
            },
        ): MaybePromise<
            ProviderSetupResult<ProvidedPorts, Ports, Context, ServiceInput>,
        >;
    }

    Type Parameters

    • Ports
    • CfgSchema extends StandardSchemaV1 = StandardSchemaV1<void, void>
    • ProvidedPorts extends ProviderPorts = NoProvidedPorts
    • Context = unknown
    • ServiceInput = void
    Index
    __providedPorts? config? name
    setup

    Optional Readonly__providedPorts

    __providedPorts?: ProvidedPorts

    Type-only marker for ports this provider contributes. Runtime provider objects do not need to set this property.

    config?: ProviderConfigDef<CfgSchema>

    Optional configuration definition. If provided, the config will be loaded and validated before calling setup.

    name: string

    Unique name for this provider (used for logging/debugging)

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