A collection of utilities to step up your TypeScript game
Type safe replacement for node's EventEmitter
Is this specifier a node.js core module?
Babel compiler core.
core-js compat
Standard library
Core functions & classes shared by multiple AWS SDK clients.
tldts core primitives (internal module)
Positioning library for floating elements: tooltips, popovers, dropdowns, and more
The `util.is*` functions introduced in Node v0.12.
Standard library
A high-level API to automate web browsers
regexpu’s core functionality (i.e. `rewritePattern(pattern, flag)`), capable of translating ES6 Unicode regular expressions to ES5.
Accessibility engine for automated Web UI testing
[](https://www.npmjs.com/package/@smithy/core) [](https://www.npmjs.com/package/@smithy/core)
The core of the humanfs library.
Super-fast alternative for babel
Error parser to parse an error instance into a collection of frames
OpenTelemetry Core provides constants and utilities shared by all OpenTelemetry SDK packages.
@vue/compiler-core
Base implementation for all Sentry JavaScript SDKs
Modern and scalable routing for React applications
Core HTTP Compatibility Library to bridge the gap between Core V1 & V2 packages.
Runtime-agnostic core of ESLint
Core runtime engine for tsafe — encrypted credential storage, process injection contracts, audit log, RBAC
Meta-crate for the tsafe local-first secrets runtime: CLI, agent, MCP server, native host, and tray
Team collaboration layer for tsafe — age-encrypted DEK sharing, Shamir recovery keys, membership directory
Bound-contract MCP server for tsafe — run policy-scoped commands without exposing secret values.