Inheritance, Composition, and Meaningful Types

Explores when inheritance and composition fit naturally, and why meaningful types matter more than convenience.

Why Modern Developers Avoid Inheritance

Explores why many modern developers avoid inheritance, examining cultural, historical, and practical factors in business application development.

The Birth of the Page Controller

Why page-level control became necessary and how the first PageController design appeared.

Page Representation and the Birth of a Controller Structure

How I struggled to bind logic to individual pages, and how controller classes gradually gave my TypeScript library framework-like properties.

API Standardization and the Birth of Form Architecture

How unstructured API calls became the next bottleneck, and how form classification reshaped my TypeScript foundation.

The First DOM Wrapper and Scoped CSS

How ElementWrap emerged from jQuery migration and CSS collapse, and how scoped styling reshaped my UI architecture.

Building Systems Alone

How working as a solo internal engineer reshaped my architectural thinking.

Form AJAX Standardization

Why Cotomy standardizes query-string search, AJAX submit, and shared form contracts to control long-term cost in business systems.

Page Lifecycle Coordination

Why Cotomy keeps page lifecycle and cross-form coordination in CotomyPageController instead of scattering ready logic across screens.

CotomyElement Boundary

A design-focused note on why Cotomy starts from CotomyElement and treats DOM handling as an architectural boundary, not a UI convenience API.