contextReductionCatalog

SUPPORT · constant · 运行时值

导入

TypeScript

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

JavaScript

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

其他公开入口：@jangts/agent-core/support、@jangts/agent-core/support/context。

定义

const contextReductionCatalog: { trim: { validate(step: ContextReduction): void; run: ({ step, fragment }: OperationCall) => Promise<ContextFragment["value"]>; }; compress: { validate(step: ContextReduction, handlers: Set<string>): void; run: (call: OperationCall) => Promise<ContextFragment["value"]>; }; }

字段结构

字段	类型	必需	说明
trim	{ validate(step: ContextReduction): void; run: ({ step, fragment }: OperationCall) => Promise<ContextFragment["value"]>; }	必需	见类型定义及调用场景。
compress	{ validate(step: ContextReduction, handlers: Set<string>): void; run: (call: OperationCall) => Promise<ContextFragment["value"]>; }	必需	见类型定义及调用场景。

使用示例

• 上下文策略：验证、缩减与审计：Support 给出可替换的策略实现，Core 保留最终输入合同和预算检查。

显式使用只校验策略

入门 · Node.js

TypeScript

import { Support } from '@jangts/agent-core';
import type { ContextPolicy } from '@jangts/agent-core/support/context';
const policy: ContextPolicy = { mode: 'validate' };
Support.validateContextPolicy(policy, [], []);
console.log(policy.mode);

JavaScript

import { Support } from '@jangts/agent-core';
const policy = { mode: 'validate' };
Support.validateContextPolicy(policy, [], []);
console.log(policy.mode);

从真实业务片段配置缩减顺序

配置 · Node.js

这些数字是示例业务的显式选择，不是 SDK 推荐适用于所有模型的容量。

TypeScript

import { Support } from '@jangts/agent-core';
import type { ContextPolicy } from '@jangts/agent-core/support/context';
const policy: ContextPolicy = { mode: 'reduce', triggerChars: 1800, targetInputChars: 1500,
  selection: { mode: 'sequence' },
  steps: [{ id: 'recent-history', kind: 'trim', fragmentId: 'history', field: 'messages',
    grouping: { kind: 'user-turn' }, keepGroups: 2, targetChars: 1000 }],
};
Support.validateContextPolicy(policy, [], []);
console.log(policy.steps);

JavaScript

import { Support } from '@jangts/agent-core';
const policy = { mode: 'reduce', triggerChars: 1800, targetInputChars: 1500,
    selection: { mode: 'sequence' },
    steps: [{ id: 'recent-history', kind: 'trim', fragmentId: 'history', field: 'messages',
            grouping: { kind: 'user-turn' }, keepGroups: 2, targetChars: 1000 }],
};
Support.validateContextPolicy(policy, [], []);
console.log(policy.steps);

对 App 自己的处理限定可变范围

扩展 · Node.js

审计还需要 ContextPlan 携带原片段；仅列 ID 不会自行修改或发布资料。

TypeScript

import { Support } from '@jangts/agent-core';
import type { ContextPolicy } from '@jangts/agent-core/support/context';
const policy: ContextPolicy = { mode: 'audit', mutableFragmentIds: ['history'] };
Support.validateContextPolicy(policy, [], []);
console.log(policy.mutableFragmentIds);

JavaScript

import { Support } from '@jangts/agent-core';
const policy = { mode: 'audit', mutableFragmentIds: ['history'] };
Support.validateContextPolicy(policy, [], []);
console.log(policy.mutableFragmentIds);

相关策略源码

• 策略与缩减操作的真实调度目录

相关定义

• ContextReduction