ts2589-workaround

What problem does it solve?

TS2589 can occur in TypeScript tests when deeply nested conditional and union types cause type-instantiation depth limits that block assertions. This Skill provides a safe workaround by pre-resolving complex conditionals to a boolean before the Expect constraint is evaluated, enabling tests to express complex type expectations without hitting depth limits.

Core Features & Use Cases

• Pre-resolve deep conditional types to simplify type-check paths in tests.
• Flatten complex type checks to a boolean and validate with Expect.
• Ideal for tests involving advanced generics, unions, and infer chains that would otherwise fail with TS2589.

Quick Start

Extract the complex type to an alias, flatten the result to a boolean, and evaluate that boolean with Expect.