TypeScript framework for extending DuckDB with user-defined functions via the Vector Gateway Interface (VGI) over Arrow IPC.

Walks through an object executing user defined functions at every node on the way down and back up.

Run Code — a language with no user-defined functions, particle emission for behavior, and browser-embeddable third-party modules — in any browser or JS host. A small WASM bridge around the language's real parser and interpreter.

vs3-neo: an S3-compatible object storage server with pluggable storage backends, versioning and user-defined functions

A math evaluator library that supports user-defined functions, variables and units, and can handle fairly ambiguous syntax.

A Svelte component for kalk, a calculator that supports user-defined functions and variables.

TEST Learn how to use custom functions in Excel (similar to user-defined functions, or UDFs). Custom functions are JavaScript functions that you can add to Excel, and then use them like any native Excel function (for example =Sum). This sample accompanies

**Note:** More details on user side API can be found in [Jest documentation](https://jestjs.io/docs/mock-function-api).

Utilities for determining if characters belong to character classes defined by the XML specs.

A npm package containing user defined functions for opentelemetry

Does this JS environment support the `name` property on functions?

Runtime for Regenerator-compiled generator and async functions.

JS SDK to interact with Supabase Functions.

The runtime API for Netlify Functions

Utilities for executing code in Web Workers

Simple, transparent parser combinators toolkit that supports any tokens

Trigger functions and/or evaluate cron expressions in JavaScript. No dependencies. Most features. All environments.

return the first argument that is `!== undefined`

List of standard and browser specific CSS functions.

Prefer arrow functions in most cases