RegisteredTransportOutput

CORE · type · Type contract

Result type of a transport selected by id.

core:plain-text yields string, a registered id yields its declared result, and an id the runner does not know yields unknown rather than a guessed type.

Import

TypeScript

import type { RegisteredTransportOutput } from '@jangts/agent-core/types';

JavaScript

/** @typedef {import('@jangts/agent-core/types').RegisteredTransportOutput} RegisteredTransportOutput */

Other public entry points:@jangts/agent-core/types, @jangts/agent-core/structs.

Definition

type RegisteredTransportOutput<Transports extends readonly ModelTransportDefinition[], Id extends string> = string extends Id
  ? unknown
  : Id extends 'core:plain-text'
    ? string
    : [Extract<Transports[number], { readonly id: Id }>] extends [never]
      ? unknown
      : Extract<Transports[number], { readonly id: Id }> extends ModelTransportDefinition<
            infer Value
          >
        ? Value
        : unknown;

Type parameters

Type parameter	Constraint	Default type
Transports	readonly ModelTransportDefinition[]	—
Id	string	—

Examples

• ModelRunner: input can be shortened while the output contract stays the same: Execute one model interaction through the real Provider port and return a value plus the invocation for this call.
• Actual request measurement and same-call preparation snapshot: Use prepare only when context must be handled ahead of time; multiple measurements and the final send reuse the same transport preparation.
• Child execution: isolated records, shared ancestor quota: A child Runner does not inherit conversation or the output receiver, but cannot bypass parent budget, cancellation, or deadlines.

Two inputs for the same output

Beginner · Node.js

TypeScript

import { ModelRunner } from '@jangts/agent-core/model';
const provider = {
  async *stream(messages: readonly { content: string }[]) {
    yield '收到：' + messages.at(-1)!.content;
  },
};
const runner = new ModelRunner({ provider });
const first = await runner.invoke('你好');
const second = await runner.invoke({ input: '你好' });
console.log(first.value, second.value);
console.log(first.invocation.invocationId);

JavaScript

import { ModelRunner } from '@jangts/agent-core/model';
const provider = {
    async *stream(messages) {
        yield '收到：' + messages.at(-1).content;
    },
};
const runner = new ModelRunner({ provider });
const first = await runner.invoke('你好');
const second = await runner.invoke({ input: '你好' });
console.log(first.value, second.value);
console.log(first.invocation.invocationId);

Add budget and request cancellation

Configuration · Node.js

TypeScript

import { ModelRunner } from '@jangts/agent-core/model';
const provider = {
  async *stream(messages: readonly { content: string }[]) {
    yield '收到：' + messages.at(-1)!.content;
  },
};
const runner = new ModelRunner({ provider, maxCalls: 2, maxInputChars: 4000,
  maxOutputChars: 2000, callTimeoutMs: 15000,
  execution: { signal: AbortSignal.timeout(20000) },
});
const result = await runner.invoke({ input: '你好', stageId: 'reply', maxOutputTokens: 600 });
console.log(result.value, runner.remainingCalls);

JavaScript

import { ModelRunner } from '@jangts/agent-core/model';
const provider = {
    async *stream(messages) {
        yield '收到：' + messages.at(-1).content;
    },
};
const runner = new ModelRunner({ provider, maxCalls: 2, maxInputChars: 4000,
    maxOutputChars: 2000, callTimeoutMs: 15000,
    execution: { signal: AbortSignal.timeout(20000) },
});
const result = await runner.invoke({ input: '你好', stageId: 'reply', maxOutputTokens: 600 });
console.log(result.value, runner.remainingCalls);

Related policy source

• Core default budget values
• Same-call preparation and real input measurement

Related definitions

• ModelTransportDefinition