Is this specifier a node.js core module?
Babel compiler core.
Standard library
Positioning library for floating elements: tooltips, popovers, dropdowns, and more
tldts core primitives (internal module)
Standard library
The `util.is*` functions introduced in Node v0.12.
A high-level API to automate web browsers
[](https://www.npmjs.com/package/@smithy/core) [](https://www.npmjs.com/package/@smithy/core)
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
The core of the humanfs library.
core-js compat
Error parser to parse an error instance into a collection of frames
Core functions & classes shared by multiple AWS SDK clients.
Modern and scalable routing for React applications
OpenTelemetry Core provides constants and utilities shared by all OpenTelemetry SDK packages.
@vue/compiler-core
Base implementation for all Sentry JavaScript SDKs
Core HTTP Compatibility Library to bridge the gap between Core V1 & V2 packages.
Super-fast alternative for babel
Runtime-agnostic core of ESLint
Core libraries that every NodeJS toolchain project should use
Core of Shiki
Actors, supervision, dispatch, mailboxes, scheduler, FSM, event stream, and coordinated shutdown — the core of the atomr actor runtime.
Native Rust runtime for actor-based concurrent and distributed systems. Umbrella crate — pull in subsystems via feature flags.
Membership, gossip, reachability, vector clocks, and split-brain resolvers for atomr clusters.
Adaptive load balancing using cluster-wide metrics for atomr.
Sharded entities for atomr — allocation strategies, rebalance, three-phase handoff, remember-entities.
Distributed pub/sub, cluster singleton, and cluster client patterns for atomr.
Layered HOCON-style configuration for atomr — `include`, `${path}` substitution, `${?ENV}`, dotted keys, arrays.
Lease-based coordination primitives for atomr.
Live web UI over a running atomr system — REST + WebSocket + embedded React SPA, Prometheus / OTLP exporters.
Dependency-injection container for atomr.
Pluggable service-discovery interface for atomr.
Convergent replicated data types (CRDTs) over a atomr cluster — counters, sets, maps, registers, replicator.