libutil

libutil——通用实用工具。countTokens 与 estimateTokens 可用于 GPT 式的令牌计数。generateHash 可生成 SHA256 哈希值。generateUuid 可生成唯一 ID。findProjectRoot 可定位仓库根目录。updateEnvFile 可修改环境文件。exec 可运行子进程。createBundler 可下载代码包。适用于令牌计数、哈希运算，以及项目相关的实用工具。

name: libutil description: > libutil - General utilities. countTokens and estimateTokens for GPT-style token counting. generateHash creates SHA256 hashes. generateUuid creates unique IDs findProjectRoot locates repository root. updateEnvFile modifies environment files. exec runs child processes. createBundler downloads code bundles. Use for token counting, hashing, and project utilities.

libutil Skill

When to Use

•Counting tokens for LLM context management
•Generating hashes and UUIDs
•Finding project root directory
•Running child processes
•Managing generated code bundles

Key Concepts

Token counting: GPT-compatible tokenization for context window management.

Project root: Finds repository root by looking for package.json markers.

Bundle management: Download and extract pre-generated code bundles.

Usage Patterns

Pattern 1: Count tokens

javascript

import { countTokens, estimateTokens } from "@copilot-ld/libutil";

const exact = countTokens("Hello, world!"); // Accurate count
const fast = estimateTokens("Hello, world!"); // Quick estimate

Pattern 2: Generate identifiers

javascript

import { generateHash, generateUuid } from "@copilot-ld/libutil";

const hash = generateHash(content); // 16-char SHA256
const uuid = generateUuid(); // Standard UUID

Pattern 3: Find project root

javascript

import { findProjectRoot } from "@copilot-ld/libutil";

const root = await findProjectRoot(); // /path/to/copilot-ld

Integration

Used across packages for common utilities. countTokens used by libmemory.