Same I18n validation on server and client
Express middleware to validate request (headers, params, query, body) using Joi
Give me a string and I'll tell you if it's a valid npm package name
Validates an IRI according to RFC 3987
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Light-weight JavaScript Bounding Box Utility Functions
Email address and domain validation
TypeScript definitions for validate-npm-package-name
Validates whether a string matches the production for an XML name or qualified name
Get accurate and well named css box model information about an Element 📦
Check if a buffer contains valid UTF-8
Loosely validate an event.
Email address and domain validation
User validations for npm
Check if a string is SVG
Offline HTML5 validator and linter
Give me a string and I'll tell you if it's a valid npm package license string
<img src="https://react-virtualized-auto-sizer.vercel.app/og.png" alt="react-virtualized-auto-sizer logo" width="400" height="210" />
Utilities for Svelte 5 that I find useful and will use in the various projects I work on. It's maintained by me, for me.
Validate identifier/keywords name
Error overlay for universal Expo apps.
Validate plugin/preset options
cron-validate is a cron-expression validator written in TypeScript.
Object schema validation
Check if email box is valid
Koala is a lightweight, flexible Ruby SDK for Facebook's new Graph API. It allows read/write access to the Facebook Graph and provides OAuth URLs and cookie validation for Facebook Connect sites. Koala supports Net::HTTP and Typhoeus connections out of the box and can accept custom modules for other services.
A ViewComponent extension that adds a `prop` DSL with defaults, fallbacks, required props, casting, enum validation, custom validators, and a pluggable caster registry. Patches ViewComponent::Base via a Rails Railtie (or on require outside Rails) so components accept a props hash out of the box.
Generates OpenAPI specs automatically from ActiveRecord models, ActiveModel validations and Rails routes. Includes a built-in serializer ~3.6x faster than as_json, Scalar and Swagger UI out of the box, and optional auto-serialization via render json:. Inspired by ActiveModel::Serializer.
Rails Active MCP enables secure Rails console access through Model Context Protocol (MCP) for AI agents and development tools like Claude Desktop. Provides safe database querying, model introspection, and code execution with comprehensive safety checks and audit logging. Features include: • Safe Ruby code execution with configurable safety checks • Read-only database query tools with result limiting • Rails model introspection (schema, associations, validations) • Dry-run code analysis for safety validation • Environment-specific configuration presets • Comprehensive audit logging and monitoring • Claude Desktop integration out of the box
rspec-llm adds first-class RSpec support for testing Large Language Model interactions. Ships LLM-as-judge matchers, JSON Schema validation, semantic similarity matchers, a programmable fake adapter, and a thin DSL for batch evaluations. Works with the ruby_llm and langchainrb gems out of the box.
A thoroughly civilized CMS for Rails apps which deal with user generated content. Chunks is a Rails engine providing out-of-the-box management and rendering for pages composed of self-contained chunks of content. Each Chunk is comprised of an edit view, a public view, and a view model which will be updated, validated, and invoked by the ChunksPublicController if server-side interaction is required. The Chunks controller quickly delegates all responsibility for logic and page flow to an individual Chunk view model while the framework gets out of the way altogether, allowing for extremely easy extension and migration onto or off the Chunks framework. Documentation and extensions available at http://www.chunkscms.com.
ERBook 9.2.1 Write books, manuals, and documents in eRuby http://snk.tuxfamily.org/lib/erbook/ ERBook is an extensible document processor that emits [1]any document you can imagine from [2]eRuby templates, which allow scripting and dynamic content generation. Version 9.2.1 (2009-11-18) This release fixes some bugs in, and improves the readability and load time of, generated XHTML documents. Bug fixes * Prevent search button from starting search when search box untouched. * Prevent browser from fetching base-64 embedded URI sources by qualifying their digests with the "cid" URI schema, which is used to identify the parts of a multi-part e-mail message. This cuts down on the amount of "404 - File Not Found" errors on the web server which hosts your generated XHTML documents because web browsers will not confuse these embedded "cid" digests as being relative HTTP files. Housekeeping * Increase vertical spacing between [3]References for better readability. * Embed W3C validator badges as base-64 data URIs to reduce page load time. * Split the document processing code in ERBook::Document into smaller self-documenting methods. References 1. http://snk.tuxfamily.org/lib/erbook/#HelloWorld 2. http://en.wikipedia.org/wiki/ERuby 3. http://snk.tuxfamily.org/lib/erbook/#_references
E11y (Easy Telemetry) - Observability for Rails developers who hate noise. UNIQUE FEATURES: • Request-scoped debug buffering - buffers debug logs in memory, flushes ONLY on errors • Zero-config SLO tracking - automatic Service Level Objectives for HTTP endpoints and jobs • Schema-validated events - catch bugs before production with dry-schema DEVELOPER EXPERIENCE: • Minimal setup — one config block, works with stdout out of the box • Auto-metrics from events (no manual Yabeda.increment) • Rails-first design (follows Rails conventions) • Pluggable adapters (Loki, Sentry, OpenTelemetry, custom backends) COST SAVINGS: • Reduce log storage costs by 90% (request-scoped buffering) • Replace expensive APM SaaS ($500-5k/month → infra costs only) • Own your observability data (no vendor lock-in) PRODUCTION-READY: • Thread-safe for multi-threaded Rails + Sidekiq • Adaptive sampling (error-based, load-based, value-based) • PII filtering (GDPR-compliant masking/hashing) • Performance optimized (hash-based events, minimal allocations) Perfect for Rails 7.0+ teams who need observability without complexity or high costs.
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