camelCase naming

No explicit getters/setters

Array filter for filtering

Array map for transformation

Optional chaining

Set for uniqueness

Spread for merge

JSDoc not Python-style docs

reduce or built-in for counting

const/let not var

Error return values

No panic for expected errors

defer for resource cleanup

Early return guard clauses

Accept interface for reader

Exported names PascalCase

Unexported names camelCase

fmt.Errorf error wrapping

No exception-style patterns

Constructor function pattern

package.json present

Test runner dependency mapped

Models translated first

TypeScript interfaces or types

Function type annotations

Tests ported to Jest structure

Same test scenarios covered

camelCase naming

Optional fields typed correctly

No any types