commonPrefixLength

CORE · function · 运行时值

Length of the longest common prefix of two strings.

Implemented as a binary search over slice comparisons so long prompts stay on the native string comparison path instead of running a JavaScript character loop.

导入

TypeScript

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

JavaScript

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

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

定义

调用

commonPrefixLength(left: string, right: string): number

Length of the longest common prefix of two strings.

Implemented as a binary search over slice comparisons so long prompts stay on the native string comparison path instead of running a JavaScript character loop.

参数	类型	传递	说明
left	string	必需	—
right	string	必需	—

返回： number。

使用示例

• 结构查询键与文本公共前缀：用于稳定比较与用量分析的小型纯函数，不是授权、散列或语义去重系统。

比较两个真实输入的稳定前缀

入门 · Node.js

TypeScript

import { commonPrefixLength } from '@jangts/agent-core';
console.log(commonPrefixLength('服务：正常', '服务：繁忙')); // 3

JavaScript

import { commonPrefixLength } from '@jangts/agent-core';
console.log(commonPrefixLength('服务：正常', '服务：繁忙')); // 3

对象键顺序不同，查询语义保持同一结构

配置 · Node.js

TypeScript

import { retrievalQueryKey } from '@jangts/agent-core';
const first = retrievalQueryKey({ query: '服务状态', filters: { region: 'cn', active: true } });
const second = retrievalQueryKey({ filters: { active: true, region: 'cn' }, query: '服务状态' });
console.log(first === second); // true
console.log(retrievalQueryKey({ ids: ['a', 'b'] }) === retrievalQueryKey({ ids: ['b', 'a'] })); // false

JavaScript

import { retrievalQueryKey } from '@jangts/agent-core';
const first = retrievalQueryKey({ query: '服务状态', filters: { region: 'cn', active: true } });
const second = retrievalQueryKey({ filters: { active: true, region: 'cn' }, query: '服务状态' });
console.log(first === second); // true
console.log(retrievalQueryKey({ ids: ['a', 'b'] }) === retrievalQueryKey({ ids: ['b', 'a'] })); // false

相关策略源码

• 结构键的排序与序列化
• 公共前缀的比较实现