Refactoring (Martin Fowler, 2nd edition, with Kent Beck) applied pragmatically, in three skills: the method (the definition, the two hats, why and when to refactor, mechanics in small steps, and self-testing code as a prerequisite), the code smells (the chapter 3 catalogue of bad smells, each pointing to the refactorings that resolve it), and the refactoring catalogue (the full set of moves grouped by category, with condensed mechanics and TypeScript examples). Composable with your own conventions.
3 skills
Working effectively with legacy code (Michael Feathers) applied pragmatically, in two skills: the method (legacy code is code without tests, the Legacy Code Change Algorithm, seams and enabling points, characterization tests, reasoning about effects) and the dependency-breaking catalogue (Sprout, Wrap, Extract Interface, Subclass and Override, Parameterize Constructor, Extract and Override Factory, and the rest), with TypeScript specifics. Composable with your own conventions.
2 skills
Clean code craftsmanship applied pragmatically: naming, small focused functions, intent-revealing comments, and disciplined error handling. Composable with your own conventions.
1 skill
The gitmoji + Conventional Commits standard for commit messages: subject-based scopes, the 50/72 rule, and lower-case-verb casing. Composable with your own conventions.
1 skill
Command Query Responsibility Segregation applied pragmatically: the command/query split promoted to the model level, command and query handlers, the write model versus read models and projections, the levels of separation from a shared store to separate stores, the consistency trade-off, and the relationship to CQS, event sourcing, and domain-driven design, with TypeScript specifics. Composable with your own conventions.
1 skill
Dependency injection applied pragmatically: Pure DI (manual constructor injection) first, the composition root, object lifetimes, and the anti-pattern catalogue, with DI containers referenced as a justified option. Composable with your own conventions.
1 skill