react

name	react
description	React component patterns, hooks, naming conventions, and the query-language translation system for Graph Explorer. Use when this capability is needed.
metadata	{"author":"aws"}

React Version & Compiler

• This project uses React 19
• The React Compiler is enabled — it auto-memoizes components and hooks, so manual useMemo, useCallback, and React.memo are unnecessary in most cases and should be avoided unless profiling shows a specific need
• Official React docs: https://react.dev

General

• Prefer functional components with hooks over class components
• Keep components small, focused on single responsibility
• Avoid prop drilling - use context or state management
• Follow principle of least privilege for component props

Feature Modules

• Feature modules in src/modules/ contain all related components, hooks, and utilities
• Each module exports its public API through an index file
• Modules should be self-contained with minimal dependencies on other modules

Naming conventions

• React Components: PascalCase (e.g., GraphViewer.tsx)
• Component Folders: PascalCase with index exports
• Hooks: camelCase with use prefix (e.g., useGraphData.ts)

Translations (Query-Language Labels)

The translation system is not used for locale/language translations. Instead, it swaps UI labels based on the active connection's query language. Each query language (Gremlin, openCypher, SPARQL) has its own JSON file in src/hooks/translations/ that maps keys to display strings (e.g., "node-type" → "Node Label" in Gremlin vs "Class" in SPARQL).

Key files:

• src/hooks/useTranslations.ts — useTranslations() hook returns a t function scoped to the current query engine
• src/hooks/translations/gremlin-translations.json
• src/hooks/translations/openCypher-translations.json
• src/hooks/translations/sparql-translations.json

Usage:

const t = useTranslations();
// t("node-type") → "Node Label" (Gremlin) or "Class" (SPARQL)

Key naming conventions:

• Lower-case kebab-case (e.g., node-type, edge-connections)
• Keys should read naturally as stand-ins for the word they represent
• Keys typically match one of the query language terms or the codebase vocabulary
• Nested keys use dot notation when accessed (e.g., node-expand.no-selection-title)

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