菜单
Use when TypeScript work involves dependency construction, composition roots, factories, lifecycle, scope, singletons, caching, or runtime provider selection.
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
基于 SOC 职业分类
Use when designing, reviewing, refactoring, or implementing code that should stay simple, testable, readable, and sustainable. Applies principles for investigating before changes, keeping few layers, making I/O explicit, using dependencies deliberately, organizing by feature, naming consistently, and presenting plans progressively.
Makes answers easier to start reading, scan, resume, and understand without losing important detail. Uses useful-answer-first structure, short paragraphs, clear literal headings, simple language, preserved nuance, natural voice, and small ASCII diagrams when they clarify structure or flow.
Use when working on TypeScript code and needing to choose the smallest focused TypeScript skill for coding standards, boundaries, composition, configs, async control, error handling, observability, security, or testing.
Use when TypeScript code coordinates async work — Promise.all vs sequential, bounded concurrency, AbortSignal cancellation, cleanup/teardown, or process lifecycle (SIGTERM, graceful shutdown).
Use when TypeScript code moves provider, SDK, API, request, response, generated, or raw input shapes across owned application boundaries.
Use when TypeScript work involves naming, abstractions, classes, local reasoning, semantic centers, full cutovers, type assertions, or design cleanup.
| name | typescript-composition |
| description | Use when TypeScript work involves dependency construction, composition roots, factories, lifecycle, scope, singletons, caching, or runtime provider selection. |
Use this skill when code decides what dependencies exist, how long they live, or which runtime implementation is selected.
| If you see... | Read |
|---|---|
| provider/client selected inside behavior code | rules/composition-root.md |
| singleton, cache, pool, memoization, request scope | rules/dependency-scope.md |
| question of ready dependency vs factory | rules/ready-instance-vs-factory.md |
| logger/tracer/exporter lifecycle or provider setup | ../typescript-observability/SKILL.md plus rules/composition-root.md |
../typescript-boundaries/SKILL.md.../typescript-configs/SKILL.md.../typescript-testing/SKILL.md.../typescript-observability/SKILL.md.Assemble dependencies at the edge. Pass ready dependencies inward unless construction must vary at call time.