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add-diagnostic

Add a new diagnostic code following the defineDiagnostics() conventions from nostics

Skill by jd-solanki

IndexedMIT★ 7
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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/jd-solanki-add-diagnostic

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Add a new diagnostic code following the defineDiagnostics() conventions from nostics

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Permissions

What this skill can do and what it asks for, from its SKILL.md and code. Checked Oct 25, 2026.

Tools
No tools found
Secrets
None asked for
Install scripts
None found

Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/add-diagnostic

Tools it pre-approves 5

From allowed-tools in SKILL.md: the agent may use these without asking you each time.

  • Read
  • Grep
  • Glob
  • Edit
  • Write

What's inside

Skill name
add-diagnostic
Description
Add a new diagnostic code following the defineDiagnostics() conventions from nostics
License
MIT
Allowed tools
Read, Grep, Glob, Edit, Write
Instructions
22 lines in SKILL.md · view on GitHub

Files (1)

  • SKILL.md

SKILL.md (first lines)

# Add a New Diagnostic Code

1. **Find the catalog.** Grep for `defineDiagnostics` to locate the `codes` object the new entry belongs in. With several catalogs, pick by area.
2. **Pick the code.** `PREFIX_XNNNN`: `PREFIX` is the project name uppercased (`NUXT`, `I18N`); `X` is the area letter (`B` build, `R` runtime, `C` config, `D` deprecation); `NNNN` is the next free number. Read existing codes to choose. Never rename or reuse a published code.
3. **Add the entry:**

```ts
LIB_R0001: {
  why: (p: { hook: string }) => `${p.hook}() must run at the top of setup().`, // string or typed fn; becomes Error.message (required)
  fix: 'Move the call into setup() or a composable it calls.', // optional, but add whenever the fix is known
  docs: 'https://example.com/custom', // optional: overrides docsBase, or `false` to opt out
},
```

- `why` is the only required field. Params from `why` and `fix` are intersected and required at the call site.
- Runtime fields (`cause`, `sources`) are passed at the call site, never in the definition.

4. **Call it:** `diagnostics.LIB_R0001({ hook })` to report, `throw diagnostics.LIB_R0001({ hook, cause: err })` to raise. Both run the reporters.

Full API and reporter/formatter/plugin details: the `nostics` skill.

From jd-solanki/ai, MIT.

More from jd-solanki/ai

Signals

Stars
7
Forks
2
Open issues
9
Last commit (this folder)
Oct 4, 2026 (24 days ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
Repository
github.com/jd-solanki/ai
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
GitHubgithub-graphql

More from jd-solanki

Cite this page

add-diagnostic skill. Agent Mart. https://agentmart.dev/skills/jd-solanki-add-diagnostic (last updated 2026-10-24)