Agent Skills › ciembor/agent-rules-books › working-effectively-with-legacy-code

working-effectively-with-legacy-code

GitHub

用于安全修改难以测试的遗留代码，通过特征测试、隔离点、Sprout或Wrap方法降低风险。

working-effectively-with-legacy-code/SKILL.md ciembor/agent-rules-books

Trigger Scenarios

修改高风险遗留代码缺乏测试覆盖的代码变更需要引入隔离点或增量风险控制

Install

npx skills add ciembor/agent-rules-books --skill working-effectively-with-legacy-code -g -y

More Options

Non-standard path

npx skills add https://github.com/ciembor/agent-rules-books/tree/main/working-effectively-with-legacy-code -g -y

Use without installing

npx skills use ciembor/agent-rules-books@working-effectively-with-legacy-code

指定 Agent (Claude Code)

npx skills add ciembor/agent-rules-books --skill working-effectively-with-legacy-code -a claude-code -g -y

安装 repo 全部 skill

npx skills add ciembor/agent-rules-books --all -g -y

预览 repo 内 skill

npx skills add ciembor/agent-rules-books --list

SKILL.md

Frontmatter

{
    "name": "working-effectively-with-legacy-code",
    "license": "MIT",
    "description": "Apply Michael Feathers-inspired legacy-code rules when changing hard-to-test code safely with characterization tests, seams, sprout methods, or wrap methods."
}

Working Effectively with Legacy Code Skill

Use this skill when a task involves risky legacy changes, missing tests, characterization tests, seams, dependency breaking, sprout method, wrap method, or incremental risk reduction.

Before making design or code decisions, read and apply working-effectively-with-legacy-code.mini.md. Use working-effectively-with-legacy-code.md only as a deeper reference when the mini rules are not enough for the current legacy-code tradeoff.