Typert 远程调用

Lookup 与上下文声明

业务对象包通过声明合并扩展两个空 map。lookup 将一种 Host 对象类型与其 wire identity 关联；上下文声明将一种作用域上下文类别与其 wire identity 关联。生成的 descriptor 引用这些 key，运行时提供方则提供活对象解析行为。

/** Merge-extensible Host object lookup declarations. */
interface TypertLookupMap {}

/** Merge-extensible scoped Context declarations. */
interface TypertContextMap {}

lookup 的 resolver 卸载后，注册表仍会保留其 wire 声明。因此 SRC 发现过程会继续把该参数归类为 lookup，并因不可用而失败，而不会把 wire 值当作普通业务对象接受。

/** Stable wire declaration retained after a lookup provider unloads. */
interface TypertLookupDefinition {
  /** Merge-declared lookup key. */
  readonly key: string
  /** Source parameter name recognized by the SRC weak parser. */
  readonly parameter: string
  /** Wire field replacing the Host object parameter. */
  readonly wire: string
  /** Canonical Host type symbol used by strict generation. */
  readonly hostTypeSymbol: string
  /** Canonical wire type symbol used by strict generation. */
  readonly wireTypeSymbol: string
}

调用 descriptor

InvocationDescriptor 是本地反射信息，不是 wire message。Host 与消费方构建会生成彼此对应的 descriptor；请求只发送 endpoint 与具名 args。strict codec 携带生成的 schema，SRC codec 则在不恢复结构类型的前提下强制要求 JSON 安全值。取消通过带外 carrier signal 表达：它在业务参数之后注入，绝不进入 args。

/** Codec attached to one invocation parameter or result. */
type TypertCodec =
  | {
    readonly mode: 'strict'
    readonly typeSymbol: string
    readonly schema: TypertSchema
  }
  | {
    readonly mode: 'src-json'
  }

/** One ordered business parameter in a Remote invocation. */
interface InvocationParameterDescriptor {
  /** Source-level parameter name. */
  readonly name: string
  /** Required key in the wire `args` object. */
  readonly wire: string
  /** Whether the value is JSON or requires a registered Host lookup. */
  readonly source: 'json' | 'lookup'
  /** Lookup key when `source` is `lookup`. */
  readonly lookup?: string
  /** Boundary codec for the wire representation. */
  readonly codec: TypertCodec
  /** Missing wire fields decode to `undefined` only for an explicitly declared `T | undefined`. */
  readonly acceptsUndefined?: true
}

/** Carrier-independent description of one exported method invocation. */
interface InvocationDescriptor {
  /** Globally stable generated identity. */
  readonly id: string
  /** Cordis service key owning the method. */
  readonly service: string
  /** Wire namespace, defaulting to the service key. */
  readonly namespace: string
  /** Public instance method name. */
  readonly method: string
  /** Service member invoked when the exported method name is an alias. */
  readonly implementation?: string
  /** Receiver selection mode. */
  readonly invocation:
    | { readonly kind: 'direct' }
    | {
      readonly kind: 'context'
      readonly context: string
      readonly wire: string
      readonly codec: TypertCodec
    }
  /** Optional consuming-Context projection for one direct lookup parameter. */
  readonly scope?: {
    /** Context kind whose Client binder supplies the identity. */
    readonly context: string
    /** Lookup parameter wire field replaced by the Context identity. */
    readonly wire: string
  }
  /** Ordered business parameters. */
  readonly parameters: readonly InvocationParameterDescriptor[]
  /** Transport cancellation injected after business parameters instead of entering wire args. */
  readonly cancellation?: {
    /** Reserved final Host method parameter. */
    readonly parameter: 'signal'
  }
  /** Codec for the resolved method result. */
  readonly result: TypertCodec
  /** Source declaration used only for diagnostics. */
  readonly sourceLocation?: InvocationSourceLocation
}

Typert 注册表

ctx.typert 分开保存当前环境的 descriptor、显式选择的 Remote contribution、lookup 提供方与作用域上下文提供方。lookup 提供方拥有稳定 wire 声明和默认 resolver；Host 组合可以为同一个 key 配置 effect-scoped 同步或异步 resolver，配置卸载后恢复默认策略。各项注册都是由 Cordis 持有的 effect，并返回可等待的 disposer。

/** Minimal Typert runtime consumed through dependency inversion. */
interface TypertRegistryContract {
  readonly local: TypertLocalRegistry
  readonly remotes: TypertRemoteRegistry
  readonly lookups: TypertLookupRegistry
  readonly contexts: TypertContextRegistry
}

生成的消费方声明会把 direct namespace 合并到 TypertClientRemote 继承的 map 中。

/** Merge-extensible direct namespace surface generated for Client Remote services. */
interface TypertRemoteNamespaceMap {}

Host Gateway

Connection 会先解码 carrier envelope，再调用 ctx.typertGateway。请求将精确的具名 wire 字段与 carrier 的取消 signal 分开携带；基础设施与边界失败使用 Gateway 的进程内错误分类体系，普通异常由 RPC 适配器归并为传输层的 internal 错误码，lookup 策略通过 TypertLookupFailure 携带的既有 RPC error 则原样返回。

/** One Remote method request after a carrier has decoded its envelope. */
interface InvokeRemoteRequest {
  /** Remote namespace selected by the generated descriptor. */
  readonly namespace: string
  /** Exported Service method name. */
  readonly method: string
  /** Named wire values; fields must exactly match the descriptor. */
  readonly args: Readonly<Record<string, unknown>>
  /** Carrier or direct-caller cancellation injected only into cancellation-aware methods. */
  readonly signal?: AbortSignal
}

/** Stable infrastructure and boundary failures emitted before or after business execution. */
type TypertGatewayErrorCode =
  | 'ambiguous-endpoint'
  | 'arguments-invalid'
  | 'binding-invalid'
  | 'context-failed'
  | 'context-not-found'
  | 'context-unavailable'
  | 'definition-unavailable'
  | 'input-invalid'
  | 'invocation-unavailable'
  | 'lookup-failed'
  | 'lookup-not-found'
  | 'lookup-unavailable'
  | 'method-unavailable'
  | 'provider-mismatch'
  | 'result-invalid'
  | 'service-unavailable'
  | 'signature-invalid'

/** Host dispatcher consumed by Connection adapters. */
interface TypertGateway {
  /**
   * Invoke one live Remote method without assuming a carrier or response envelope.
   * @param request - decoded endpoint and named wire arguments.
   * @returns the validated business result.
   * @throws {@link TypertGatewayError} for dispatch, provider, or boundary failures; lookup-policy and business errors retain identity.
   */
  invoke(request: InvokeRemoteRequest): Promise<unknown>
}

消费方 Remote

ctx.remote 只暴露由已导入 /remote 产物贡献的 namespace。$mount() 会把生成的 descriptor 与具体方法作为一项由 fiber 持有的操作统一注册。每个 namespace 都是可追踪的 remote.<namespace> Cordis 子服务，其生命周期覆盖已挂载的方法；JavaScript Proxy 与 Host 业务服务类型都不会进入消费方。

/** Client Remote capability implemented by the Gateway and consumed by Remote assemblies. */
interface TypertClientRemote extends TypertRemoteNamespaceMap {
  /**
   * Mount one generated Host-for-Client contribution in the caller's fiber.
   * @param contribution - explicitly selected Remote package artifact.
   * @returns disposer after namespace services and concrete methods are ready.
   */
  $mount(contribution: TypertRemoteContribution): Promise<TypertDisposer>
  /**
   * Subscribe to one forwarded Host event; delivery is one-way, in registration
   * order, and isolates a throwing listener from the rest.
   * @template Event - forwarded event name selected by the Host assembly.
   * @param event - forwarded Host event name, unchanged on the wire.
   * @param listener - receives the Host's argument list as declared by Cordis `Events`.
   * @returns disposer owned by the calling fiber.
   */
  $on<Event extends TypertRemoteEvent>(event: Event, listener: Events[Event]): () => void
  /**
   * Hand one decoded forwarded frame to the subscription table. The carrier
   * owning the Host frame sink calls this; a consumer subscribes with
   * {@link TypertClientRemote.$on} and never calls it.
   *
   * `event` is a plain string because this is the wire boundary: the name is
   * whatever the Host assembly's allowlist selected, and one nobody subscribed
   * to is dropped silently.
   * @param event - forwarded Host event name, exactly as the Host emitted it.
   * @param args - the Host argument list, already JSON-decoded.
   */
  $dispatch(event: string, args: readonly unknown[]): void
}

Cordis API

Generated from source by scripts/gen-cordis-catalog.ts (verified fresh by pnpm run verify-cordis-catalog in doc-sync; regenerate with pnpm run gen-cordis-catalog) — this section is byte-identical in both language sides of the page. Signature blocks use a ts cordis-catalog fence and keep the original source JSDoc; dispatch modes are defined in the primer, and the framework-inherited ctx API lives in cordis-api/inherited.md.

ctx.apiProxy — ApiProxy

Root interface of the unified API. New client-request domain = one new file pair + one field here + one map row.

/**
 * Response entry for server requests; not a domain method.
 * @param message - Client response carrying the server request's rpcId.
 * @returns Transport receipt for the response delivery.
 */
respond(message: ClientResponse): Promise<RpcReceipt>

Source: packages/host/apiproxy/src/api/index.ts:22

ctx.typert — TypertRegistry

Registry of generated schemas, package reflection, invocations, and Remote dependency providers.

/**
 * Register one generated contribution atomically for the calling fiber.
 * Duplicate package-face identities, schemas, invocation ids, or endpoints
 * reject the whole batch.
 * @param contribution - generated schemas, reflection, and Host invocations.
 * @returns the exact effect disposer that removes this contribution.
 */
register(contribution: TypertContribution): TypertDisposer

/**
 * Look up one schema by `<package>#<name>`.
 * @param key - global schema key.
 * @returns the live schema record, or `undefined` when absent.
 */
get(key: string): TypertSchemaRecord | undefined

/**
 * Resolve one required schema.
 * @param key - global schema key.
 * @returns the live schema record.
 * @throws when the key is malformed, the package face is absent, or the schema is not contributed.
 */
resolve(key: string): TypertSchemaRecord

/**
 * Enumerate live schemas in registration order.
 * @param filter - optional package and face restriction.
 * @returns matching schema records.
 */
list(filter: TypertSchemaFilter = {}): TypertSchemaRecord[]

/**
 * Look up generated reflection for one package face.
 * @param packageName - exact npm package name.
 * @param face - face to query; defaults to the host runtime.
 * @returns the live package record, or `undefined` when absent.
 */
getPackage(packageName: string, face: TypertFace = 'host'): TypertPackageRecord | undefined

/**
 * Enumerate generated package reflection in registration order.
 * @param filter - optional package and face restriction.
 * @returns matching package records.
 */
listPackages(filter: TypertPackageFilter = {}): TypertPackageRecord[]

/**
 * Project a live Zod schema to JSON Schema without caching the result.
 * @param key - global schema key.
 * @param params - Zod projection parameters.
 * @returns a fresh JSON Schema document.
 */
toJSONSchema(key: string, params?: z.core.ToJSONSchemaParams): z.core.JSONSchema.BaseSchema

Types: TypertContribution · TypertFace · TypertPackageFilter · TypertPackageRecord · TypertSchemaFilter · TypertSchemaRecord

Source: packages/typert/registry/src/service.ts:446

ctx.typertGateway — TypertGatewayService

Resolve strict generated definitions or conservative SRC markers against current Cordis Services and Typert providers.

/**
 * Invoke one live Remote method through strict generated reflection or SRC markers.
 * @param request - decoded endpoint and exact named wire arguments.
 * @returns the validated business result.
 * @throws {@link TypertGatewayError} for dispatch, provider, or boundary failures; lookup-policy and business errors retain identity.
 */
async invoke(request: InvokeRemoteRequest): Promise<unknown>

Source: packages/api/gateway/src/index.ts:90