@pexip/signal/dist/index.js

an observer pattern while avoiding boilerplate code. https://en.wikipedia.org/wiki/Signals_and_slots

/**
 * A function to create a new {@link Signal}
 */
export { createSignal } from './signal';
/**
 * Export operators
 */
export { combine } from './combine';
/**
 * Export all types
 */
export * from './types';
/**
 * Export setLogger for setting logger when consuming the package
 */
export { setLogger, setFlags } from './logger';