ra-anno

Write idiomatic TypeScript patterns for clean, maintainable code. Use when writing or refactoring TypeScript classes, functions, modules, or async logic.

Apply modern TypeScript standards for type safety and maintainability. Use when working with types, interfaces, generics, enums, unions, or tsconfig settings.

Validate input, secure auth tokens, and prevent injection attacks in TypeScript. Use when validating input, handling auth tokens, sanitizing data, or managing secrets and sensitive configuration.

Development tools, linting, and build config for TypeScript. Use when configuring ESLint, Prettier, Jest, Vitest, tsconfig, or any TS build tooling.

This skill should be used when working with Apache Arrow in JavaScript/TypeScript — Table, Vector, Schema, IPC serialization, columnar data, RecordBatch, Flight SQL, Flechette, Arquero, Mosaic, DuckDB-WASM, or imports from 'apache-arrow', '@uwdata/flechette', '@uwdata/vgplot', 'arquero'. Covers zero-copy patterns, typed arrays, builder API, Arrow Flight, and the Arrow JS ecosystem.

This skill should be used when the user is working with Effect-TS, asks to "write Effect code", "use Effect", "functional TypeScript", "handle errors with Effect", "dependency injection Effect", "Effect Layer", "Effect Schema", or needs expert-level guidance on Effect-TS patterns with Svelte 5 and SvelteKit 2.

PixiJS v8 + Svelte 5/SvelteKit 2 for 2D graphics: rendering, Graphics API, events, filters, viewport pan/zoom, @pixi/layout, @pixi/ui, performance optimization. For document viewers, annotation tools, data visualization.

Write Dagger modules and functions in Go for container builds, CI/CD pipelines, and workflow automation. Use when: dagger, dagger module, dagger function, dagger call, dagger shell, dagger init, CI/CD pipeline as code, container build with dagger, publish container image, dagger SDK, daggerverse, dagger toolchain, dagger Go SDK, programmable CI, build-test-push pipeline, dagger.json, dag.Container, dag.Directory, multi-stage container build, dagger cloud, trivy scan, SBOM generation, vulnerability scanning, provenance attestation, cosign signing, supply chain security, docker compose dagger, service binding, dagger-for-github action, publish docker registry, publish pypi. Also use when the user wants to replace shell scripts or YAML CI configs with typed, composable Go code that runs identically locally and in CI.

Build accessible, customizable UI components for SvelteKit 2 / Svelte 5 projects using shadcn-svelte, Tailwind CSS v4, Deno, Storybook, Lucide icons, LayerChart, and motion-sv. Use when creating component-based Svelte applications that need production-ready, styled UI elements. Also covers Skeleton UI and Melt UI for library selection, Storybook for component dev, LayerChart for data visualization, and Lucide for icons. Triggers: "add components", "UI components", "build UI", "install component", "create form", "create dialog", "svelte components", "shadcn-svelte", "skeleton ui", "melt ui", "storybook", "component story", "chart", "visualization", "layerchart", "bar chart", "line chart", "pie chart", "icon", "lucide", "add icon", "tailwind", "tailwind config", "theme", "dark mode", "animation", "motion", "motion-sv", "framer motion", "animate", "transition", "gesture", "whileHover", "exit animation"

Write and evaluate effective Python tests using pytest. Use when writing tests, reviewing test code, debugging test failures, or improving test coverage. Covers test design, fixtures, parameterization, mocking, and async testing.

Use Transformers.js to run state-of-the-art machine learning models directly in JavaScript/TypeScript. Supports NLP (text classification, translation, summarization), computer vision (image classification, object detection), audio (speech recognition, audio classification), and multimodal tasks. Works in Node.js and browsers (with WebGPU/WASM) using pre-trained models from Hugging Face Hub.

Guide for writing documentation content with Zensical's Markdown extensions. Use when: write docs with admonitions, code blocks, content tabs, diagrams, grids, icons, emojis, math equations, data tables, footnotes, tooltips, buttons, images, lists, task lists, formatting, front matter, Mermaid diagrams.

Guide for setting up and configuring Zensical documentation sites. Use when: create documentation site, configure zensical.toml, set up navigation, change theme colors, configure fonts, add analytics, deploy docs site, GitHub Pages, GitLab Pages, mkdocs.yml migration, customize Zensical theme, template overrides, add CSS or JavaScript.