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rsdoctor: Skill for Claude Code

.agents/skills/write-e2e-cases/SKILL.md

write-e2e-cases is a skill for Claude Code, Codex from web-infra-dev/rsdoctor. It costs 39 tokens per session (426 once invoked), scanned A, original, MIT.

A guide for writing end-to-end tests for Rsdoctor, a tool that checks JavaScript build results. End-to-end tests run a complete workflow, using Playwright to compile test projects and check the resulting data.

In plain words
What is it for?
Use it to add feature tests, reproduce bugs, and prevent regressions across Rsdoctor’s Rspack, Rsbuild, or Rspeedy integrations.
Why use it?
It provides the project’s required locations, helpers, fixtures, and test patterns, reducing setup mistakes and inconsistent tests.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is web-infra-dev/rsdoctor's own configuration. It tells Claude Code and Codex how to work on rsdoctor itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything rsdoctor configures →

not rated 1.2krepo +3 changed 1mo ago A scan SkillSpector: pass 39 tokens original MIT
View source ↗ web-infra-dev/rsdoctor rsdoctor.rs
About the project

Rsdoctor is a build analyzer for Rspack projects that shows how compilation works, what it produces, and where build problems occur. Development teams use it to inspect build artifacts and timing, check build rules, and add custom scans. The catalogue add-ons provide ways to work with Rsdoctor.

web-infra-dev/rsdoctor · 1,151 stars · on GitHub · rsdoctor.rs

Reuse

Borrowing it

Nothing to install: this file belongs to web-infra-dev/rsdoctor. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/web-infra-dev/rsdoctor/main/.agents/skills/write-e2e-cases/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/web-infra-dev/rsdoctor

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for write-e2e-cases

README.md
[![agentmods](https://agentmods.dev/badge/skills/web-infra-dev/rsdoctor/write-e2e-cases/github.svg)](https://agentmods.dev/skills/web-infra-dev/rsdoctor/write-e2e-cases)
Your own site
<a href="https://agentmods.dev/skills/web-infra-dev/rsdoctor/write-e2e-cases"><img src="https://agentmods.dev/badge/skills/web-infra-dev/rsdoctor/write-e2e-cases/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for write-e2e-cases

Your own site · 80×15
<a href="https://agentmods.dev/skills/web-infra-dev/rsdoctor/write-e2e-cases"><img src="https://agentmods.dev/badge/skills/web-infra-dev/rsdoctor/write-e2e-cases.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 426 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00039 $0.00426
Opus 5.5 $0.00016 $0.00170
Sonnet 5.5 $0.00008 $0.00085
Haiku 4.5 $0.00004 $0.00043

Measured 1mo ago against content hash cc0c9d92c308, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

write-e2e-cases scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/skills/write-e2e-cases/SKILL.md · 39 lines

What it actually says

Write E2E cases

Rsdoctor E2E tests use Playwright and live under e2e/cases/. Each bundler has its own directory:

  • e2e/cases/doctor-rspack/ — tests using Rspack compilation
  • e2e/cases/doctor-rsbuild/ — tests using Rsbuild
  • e2e/cases/doctor-rspeedy/ — tests using Rspeedy

Steps

  1. Review uncommitted git changes to define test scope and target behavior.

  2. Read e2e/README.md and follow its conventions.

  3. Use helpers from @scripts/test-helper (for example compileByRspack) to compile fixtures. Do not call bundler APIs directly.

  4. Add Playwright test files under the appropriate e2e/cases/doctor-* directory, following existing patterns.

  5. Test fixtures (source files, loaders, configs) go in fixtures/ subdirectories inside each case directory.

  6. Keep assertions focused and readable; avoid redundant setup and checks.

  7. Run pnpm e2e from the repository root to validate.

Case structure

  • Each test file creates an Rsdoctor plugin instance (e.g., createRsdoctorPlugin from a local test-utils.ts), compiles a fixture via compileByRspack, and asserts on the SDK store data.
  • Fixtures are plain JS/TS files and loaders in fixtures/ — not full application directories.
  • Use @rsdoctor/core/plugins for getSDK / setSDK when inspecting analysis results.

Constraints

  • If tests can pass only after source-code changes, do not change source code directly. Explain the required source change and ask the user before proceeding.
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago Changed cc0c9d92c308
  2. 2mo ago First seen · 39 lines · 39 tokens per session scan A 99fd0fbbb722

Subscribe to this mod's changes

write-e2e-cases is a skill published in the GitHub repository web-infra-dev/rsdoctor (1,151 stars, last pushed today), licensed MIT. It adds 39 tokens to every session and 426 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

E2E testingTestinganalyzebuild-analyzerbundlehacktoberfestrspackwebpack
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