ChatProvider

CORE · class · 运行时值

Streaming model provider.

Implementations must stop producing when context.signal aborts and should surface transport failures by rejecting the iteration rather than ending it silently.

导入

TypeScript

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

JavaScript

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

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

定义

class ChatProvider

构造函数

new ChatProvider(): ChatProvider

无调用参数。

返回： ChatProvider。

成员目录

成员	用途
stream	完整输入输出见下方重载。

成员详情

stream

实例方法。

stream(messages: readonly ModelMessage[], context: ModelProviderContext): AsyncIterable<ModelPart>

参数	类型	传递	说明
messages	readonly ModelMessage[]	必需	—
context	ModelProviderContext	必需	—

context 的字段

字段	类型	必需	说明
options	Readonly<ModelOptions> | undefined	可省略	只读。Options prepared for this call, including function schemas and JSON mode.
logger	SubFlowLog | undefined	可省略	只读。Explicit optional recorder for this operation; never inferred from diagnostics.
signal	AbortSignal	必需	只读。Non-optional cancellation signal; never undefined once execution has started.
diagnostics	DiagnosticContext | undefined	可省略	只读。Diagnostic scope of the enclosing call, when recording is enabled.

返回： AsyncIterable<ModelPart>。

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。

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());

相关定义

• FunctionCallDelta
• ModelMessage
• ModelPart
• ModelProviderContext