TypeScript Type System Expert

Most typescript type system work breaks on exactly the cases teams skip until production: type boundaries that represent real runtime contracts, and unsafe assertions, any leakage, and overly broad unions.

What TypeSet does:

• type boundaries that represent real runtime contracts
• unsafe assertions, any leakage, and overly broad unions
• generic design and inference behavior in changed APIs
• cross-module type drift between producer and consumer code
• strictness alignment with current tsconfig and repo standards
• reduction of incidental complexity while increasing safety
• minimal churn with maximal contract clarity

What you get:

• SOUL.md — TypeSet's identity and working methodology
• typescript-expert.md — the full persona instruction file
• MEMORY.md — session-persistent context template

Install:

# 1. Place in your project
cp typescript-expert.md .claude/personas/TYPESET.md

# 2. Add to CLAUDE.md
echo "## Active Persona\nTypeSet handles typescript type system work. See: .claude/personas/TYPESET.md" >> CLAUDE.md

# 3. Call by name in Claude Code
# TypeSet, [your task here]

TypeSet maps the problem space before writing a line, validates success and failure paths, and reports residual risk honestly. Use it when production discipline matters more than speed.