typescript-professional-usage

FoundationJIT only

analysis-agent/task-agent/review-agent: use when TypeScript runtime validation, structural typing, async, numeric, or module semantics change; skip generic work.

Group: Language usage
Supported roles: MainAnalysisTaskReview
Source: SKILL.md

Use when

Trigger signals that make this skill the right owner

TypeScript runtime validation structural typing excess property brand discriminant any assertion non-null suppression
Promise rejection AbortSignal cancellation stale completion safe integer NaN infinity bigint decimal unit serialization
type-only import ESM CJS conditional exports module resolution declaration emission generated client public type runtime skew

Do not use when

Anti-triggers — as binding as the triggers above

the open decision is generic frontend state API policy package build performance testing or style without TypeScript-specific semantics
no task-local TypeScript source declaration generated compiler or emitted-runtime boundary requires inspection or change

Required inputs

What must be supplied before this skill can decide anything

changed TypeScript trust type async numeric module or declaration paths
current tsconfig runtime bundler package exports generated authority and supported consumers
malformed input async cancellation numeric emission consumer-compile and runtime-skew proof evidence

Output contract

What this skill owes the next role

TypeScript semantic decision with runtime boundary, structural-type limits, and bounded escapes; async, cancellation, and numeric behavior; module emission and public/generated compatibility; proof limits and specialist routes.

Escalation signals

When this skill must hand the decision back

Type erasure structural assignability floating work numeric coercion or module emission can violate runtime and consumer behavior despite a green typecheck

Loaded by

This skill never owns a task. These professionals may pull it in as Layer 3.

Targeted references

Each reference carries its own load condition. None of them enter context by default.

Reference	Load when	Do not load when	Required by
benchmarks-and-patterns.mdbenchmark-pattern	A TypeScript change affects runtime validation structural typing unsafe escapes async numeric module-emission or public-type semantics	The TypeScript edit preserves these boundaries and established compiler plus runtime behavior resolves the mechanism	TaskAnalysisReview