lang-typescript

name	lang-typescript
description	TypeScript language patterns and type safety rules — strict mode, no any, discriminated unions. Use when writing TypeScript code, reviewing types, or enforcing type safety.
allowed-tools	["Bash","Read","Write","Edit","Grep","Glob","Agent"]
metadata	{"category":"universal","extends":"core-coding-standards","tags":["typescript","type-safety","language"],"status":"ready","version":4}

Principles

• Enable strict mode — no implicit any, strict null checks
• Prefer discriminated unions over type assertions
• Use unknown over any — narrow with type guards

Rules

See rules index for detailed patterns.

Examples

Positive Trigger

User: "Replace unsafe any usage with discriminated unions in this module."

Expected behavior: Use lang-typescript guidance, follow its workflow, and return actionable output.

Non-Trigger

User: "Design REST route naming conventions for a new backend."

Expected behavior: Do not prioritize lang-typescript; choose a more relevant skill or proceed without it.

Troubleshooting

Skill Does Not Trigger

• Error: The skill is not selected when expected.
• Cause: Request wording does not clearly match the description trigger conditions.
• Solution: Rephrase with explicit domain/task keywords from the description and retry.

Guidance Conflicts With Another Skill

• Error: Instructions from multiple skills conflict in one task.
• Cause: Overlapping scope across loaded skills.
• Solution: State which skill is authoritative for the current step and apply that workflow first.

Output Is Too Generic

• Error: Result lacks concrete, actionable detail.
• Cause: Task input omitted context, constraints, or target format.
• Solution: Add specific constraints (environment, scope, format, success criteria) and rerun.

Workflow

1. Identify whether the request clearly matches lang-typescript scope and triggers.
2. Apply the skill rules and referenced guidance to produce a concrete result.
3. Validate output quality against constraints; if gaps remain, refine once with explicit assumptions.