File system linter with a custom DSL for directory structure validation

Standalone CLI and JavaScript API for project file/folder structure validation

Iris is a visualisation aid for protein structure validation

Model structure/validation for feathers.js

A Node.js CLI tool for validating codebase folder and file structure using a clean declarative configuration. Part of the guardz ecosystem for comprehensive TypeScript development.

Markdown structure validation primitive - heading hierarchy, links, lists, code blocks

Primitive validator for JSON structure validation - parseability, encoding, schema hooks

Primitive validator for MIME type structure validation - MIME parts, content-type correctness

MongoDB ODM that combines MongoDB's flexibility with schema structure, validation, and custom methods. Complete TypeScript support with model-based architecture and event system.

Content quality validation - composite validator combining link integrity, image optimization, editorial style, and markdown structure validation

A comprehensive content analysis library for SEO optimization, readability scoring, structure validation, and problematic pattern detection.

A library that brings structure, validation, and reliability to prompt engineering.

A public domain JSON Schema validator for JavaScript

A lightning-fast, single-pass command line argument parser with structure validation

Recordari is a type and structure validation tool for configuration files

Public Key Infrastructure (PKI) is the basis of how identity and key management is performed on the web today. PKIjs is a pure JavaScript library implementing the formats that are used in PKI applications. It is built on WebCrypto and aspires to make it p

ESLint plugin for Frontend Project Structure validation

No-dependencies, low-level, high-performance JIT code generation package for JavaScript

Blazing fast input validation and transformation ⚡

Define shapes and types and use them for data/structure validation