Zod-based validation utilities: schema coercion, AI-readable error formatting, and CLI arg conversion

Source spans, diagnostic codes, and error formatting for Intent Language.

TypeScript client for the Quire API — typed endpoints, OAuth helpers, error formatting.

Pearl.js validation — Zod-powered FormRequest, validation pipes, and error formatting

Lightweight library for modern Error formatting

An express gateway plugin and policy for app error formatting and management

Pyreon DX layer over Standard Schema — withField metadata, reactive parse, i18n-aware error formatting. Works with Zod, Valibot, ArkType, or any Standard Schema-compliant validator.

express middleware and fluent API to standardize REST API responses and error formatting

Collection of text utility functions for error formatting, template replacement, chunking, slugification, duration formatting, YAML/JSON conversion, link generation, and file tree rendering.

Zod request validation helpers with pretty error formatting for Node API projects.

Date formatting and parsing

Standardized API response wrapper for NestJS with pagination, error formatting, and success responses

This packages is a collection of utilities and helper functions

ESLint rules for formatting jest tests

The Astro language server, implement the [language server protocol](https://microsoft.github.io/language-server-protocol/)

just emit 'log' events on the process object

Consolidated validation engine combining schema validation, param validation, type checking, and error formatting

A moment.js plugin for formatting durations.

Conditional formatting UI for Univer Sheets.

Compare, format, diff and serialize any JavaScript value