deepseek-ai/deepseek-harness · error · TypeError

typert-protocol: Remote decorators require a public instance

Error message

typert-protocol: Remote decorators require a public instance method with a string name

What it means

Error "typert-protocol: Remote decorators require a public instance method with a string name" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/typert/protocol/src/index.ts:236

/**
 * Read Remote markers attached to a live Service by decorator initializers.
 * The returned snapshot cannot mutate the private marker table.
 * @param service - live Service instance.
 * @returns markers in class declaration order.
 */
export function remoteMethods(service: object): readonly RemoteMethodMarker[] {
  const prototype = Object.getPrototypeOf(service) as object | null
  if (prototype === null) return []
  return [...(markers.get(prototype) ?? [])].map(([method, marker]) => ({ method, ...marker }))
}

function addMarkerInitializer<This extends object>(
  context: RemoteInitializerContext<This>,
  invocation: RemoteInvocationMarker,
  exportName?: string,
): void {
  if (context.private || context.static || typeof context.name !== 'string') {
    throw new TypeError('typert-protocol: Remote decorators require a public instance method with a string name')
  }
  const method = context.name
  context.addInitializer(function (this: This) {
    const prototype = Object.getPrototypeOf(this) as object | null
    if (prototype === null) {
      throw new TypeError(`typert-protocol: cannot mark Remote method "${method}" on an object without a prototype`)
    }
    mark(prototype, method, invocation, exportName)
  })
}

function mark(
  prototype: object,
  method: string,
  invocation: RemoteInvocationMarker,
  exportName?: string,
): void {
  let table = markers.get(prototype)

View on GitHub (pinned to b150a551b8)

Solutions

1. Apply the Remote decorator to a public instance method with a string name.

When it happens

Trigger: Thrown at packages/typert/protocol/src/index.ts:236 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of deepseek-ai/deepseek-harness@b150a551b8 (2026-08-24). Data as JSON: /api/errors/6abb202ef505de3e. Report an issue: GitHub.