core▌

Modern TypeScript development patterns for type safety, runtime validation, and optimal configuration.

Use components from your core library instead of raw platform components. This ensures consistent styling and behavior.

This document outlines the architecture and mental model for packages/core, the heart of the Angular framework.

Core patterns and configuration for AWS SDK for Java 2.x service clients, authentication, and HTTP management. \n \n Covers client builder patterns, credential provider chains (environment variables, profiles, IAM roles, SSO), and lifecycle management with try-with-resources \n Supports Apache HTTP client for sync operations and Netty for async, with connection pooling, timeout configuration, and SSL optimization \n Includes Spring Boot integration with @ConfigurationProperties , bean definition

Convert dbt Core projects into Airflow DAGs or TaskGroups using Astronomer Cosmos. \n \n Supports three assembly patterns: standalone DbtDag, DbtTaskGroup within existing DAGs, and individual Cosmos operators for fine-grained control \n Choose from eight execution modes (WATCHER, LOCAL, VIRTUALENV, KUBERNETES, AIRFLOW_ASYNC, and others) based on isolation and performance needs \n Offers three parsing strategies (dbt_manifest, dbt_ls, dbt_ls_file, automatic) to balance speed and selector complexi

When writing readable Go code, apply these principles in order of importance:

Read and write NFC tags on iPhone using the CoreNFC framework. Covers NDEF reader sessions, tag reader sessions, NDEF message construction, entitlements, and background tag reading. Targets Swift 6.3 / iOS 26+.

Read device sensor data -- accelerometer, gyroscope, magnetometer, pedometer, and activity recognition -- on iOS and watchOS. CoreMotion fuses raw sensor inputs into processed device-motion data and provides pedometer/activity APIs for fitness and navigation use cases. Targets Swift 6.3 / iOS 26+.

Build backend AI with Vercel AI SDK v6, covering structured outputs, multi-modal capabilities, tools, and 15 error solutions. \n \n Supports text generation, structured outputs (objects, arrays, choices), speech synthesis, transcription, embeddings, and image generation across 69+ providers (OpenAI, Anthropic, Google, Cloudflare) \n Output API replaces deprecated generateObject/streamObject; use Output.object() , Output.array() , Output.choice() for type-safe structured data with Zod schemas \n

Schema definition, catalog creation, and AI prompt generation for json-render specs. \n \n Define schemas with typed specs and catalogs using defineSchema , then create catalogs mapping component names to their props and descriptions \n Generate AI system prompts from catalogs with optional custom rules; supports spec streaming via JSONL patches with createSpecStreamCompiler \n Dynamic prop expressions enable state binding ( $state , $bindState ), conditionals ( $cond ), templating ( $template )