Runtime type checking library for TS & JS
utilities for working with typescript's AST
[](https://github.com/geostyler/geostyler-style/actions/workflows/on-push-main.yml) [
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.