Secure YAML parser — duplicate key detection, alias depth limiting, prototype pollution prevention

Transform mongodb like errors (E.G. "11000 - duplicate key") into Mongoose ValidationError instances

A json handler that has an option to check for duplicated keys

Strict JSON parsing for NestJS (Express/Fastify) with duplicate-key detection

Convert a MongoDB duplicate key error to a mongoose validation error

JSON to POJO with duplicate key handling

knex insert on duplicate key update & increment

Zero-dependency TypeScript parser and serializer for Valve KeyValues (VDF / KV1), for Node.js and Bun. Comments, platform conditionals, #base includes, duplicate-key arrays, schema validation and a CLI.

Extracts duplicate key name from Mongoose error with code 11000.

Compile objects with duplicate keys to valid strict ES5

Compile regular expressions using duplicate named groups to index-based groups.

ESLint plugin for Angular Templates

adds node crypto signing for browsers

Lowercase the keys of an object

Parser for Github, GitLab and Bitbucket issues actions, references and mentions

Agent skill provider registry for the DeepSeek Harness

Properties file reader for Node.js

remark-lint rule to warn on duplicate definitions

nvpair =================== - k,v pair-list - for duplicate key supported

Webpack plugin that warns you when multiple versions of the same package exist in a build.