ModelPart

CORE · type · 类型合同

One streamed response part: assistant text or a function-call fragment.

导入

TypeScript

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

JavaScript

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

其他公开入口：@jangts/agent-core、@jangts/agent-core/types、@jangts/agent-core/structs。

定义

类型： ModelPart

类型表达式

type ModelPart = string | FunctionCallDelta;

联合分支结构

ModelPart的可选结构： 选择其中一种结构，各分支的字段要求分别列出。

分支 1

string

分支 2

字段	类型	必需	说明
type	"function-call-delta"	必需	见类型定义及调用场景。
index	number	必需	Index of the call within the response; deltas with the same index belong together.
id	string | undefined	可省略	Provider call id, usually delivered once with the first delta.
name	string | undefined	可省略	Function name, usually delivered once with the first delta.
arguments	string | undefined	可省略	Raw JSON argument fragment; concatenating all fragments yields the full arguments.

使用示例

• 模型 Tool 与传输：完整校验后才得到类型化选择：Tool 定义提供 Schema 与 resolver；传输将 wire 输出翻译为统一的模型选择合同。
• 兼容 Provider 与自定义 Provider：Support 负责常见 Chat Completions HTTP/SSE 生命周期；App 可替换为自己的 ChatProvider。
• Support：推荐用法的聚合入口：Support 聚合推荐的构造、策略与同源配置生成；Core 运行不依赖这个命名空间。

声明两个可选择 Tool

入门 · Node.js

TypeScript

import { ModelToolRegistry } from '@jangts/agent-core';
const inputSchema = { jsonSchema: { type: 'object', properties: {}, additionalProperties: false },
  parse(value: unknown) {
    if (!value || typeof value !== 'object' || Array.isArray(value) || Object.keys(value).length) throw new Error('需要空对象');
    return {};
  } };
const tools = new ModelToolRegistry([
  { id: 'greet', description: '回答问候', inputSchema, resolve: () => 'greet' },
  { id: 'status', description: '查询状态', inputSchema, resolve: () => 'status' },
]).seal();
console.log(tools.resolve({ toolId: 'status', input: {} }, { stageId: 'recognize' }));

JavaScript

import { ModelToolRegistry } from '@jangts/agent-core';
const inputSchema = { jsonSchema: { type: 'object', properties: {}, additionalProperties: false },
    parse(value) {
        if (!value || typeof value !== 'object' || Array.isArray(value) || Object.keys(value).length)
            throw new Error('需要空对象');
        return {};
    } };
const tools = new ModelToolRegistry([
    { id: 'greet', description: '回答问候', inputSchema, resolve: () => 'greet' },
    { id: 'status', description: '查询状态', inputSchema, resolve: () => 'status' },
]).seal();
console.log(tools.resolve({ toolId: 'status', input: {} }, { stageId: 'recognize' }));

仅向一个阶段投影允许的子集

配置 · Node.js

TypeScript

import { ModelToolRegistry, Support } from '@jangts/agent-core';
const schema = Support.defineSchema({ jsonSchema: { type: 'object', properties: {} },
  parse(value: unknown) { if (!value || typeof value !== 'object' || Array.isArray(value)) throw new TypeError('需要对象'); return {}; } });
const registry = new ModelToolRegistry([
  { id: 'greet', description: '问候', inputSchema: schema, resolve: () => 'greet' },
  { id: 'status', description: '状态', inputSchema: schema, resolve: () => 'status' },
]).seal();
const readOnly = registry.select(['status']);
const transport = Support.createModelTransport({ id: 'recognize', tools: readOnly });
console.log(transport.id, readOnly.ids());

JavaScript

import { ModelToolRegistry, Support } from '@jangts/agent-core';
const schema = Support.defineSchema({ jsonSchema: { type: 'object', properties: {} },
    parse(value) { if (!value || typeof value !== 'object' || Array.isArray(value))
        throw new TypeError('需要对象'); return {}; } });
const registry = new ModelToolRegistry([
    { id: 'greet', description: '问候', inputSchema: schema, resolve: () => 'greet' },
    { id: 'status', description: '状态', inputSchema: schema, resolve: () => 'status' },
]).seal();
const readOnly = registry.select(['status']);
const transport = Support.createModelTransport({ id: 'recognize', tools: readOnly });
console.log(transport.id, readOnly.ids());

相关策略源码

• HTTP 失败映射和受控请求字段

相关定义

• FunctionCallDelta