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322 packages found
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Simple event emitter
A Svelte action that monitors an element enters or leaves the viewport or a parent element. Performant and efficient thanks to using Intersection Observer under the hood.
- svelte
- observer
- observing
- intersection
- viewport
- inviewport
- in-view
- in-viewport
- inview
- observe
- waypoint
- intersection-observer
- intersection-observer-api
- performance
- View more
A dangerously convienient, high performance and super lightweight utility (2.7kb) that injects methods into the Object prototype to sugar for many common use cases working with Javascript objects.
React + RxJS = <3
- action
- behavior
- concurrent
- es6
- events
- external
- hooks
- observables
- observe
- pipe
- react
- react18
- reactive
- realtime
- View more
Simple observable ES6 proxy.
Create observable object. You can work with it as with a regular hash, while using subscriptions to the events of adding an element, changing and deleting
- proxy
- bind
- observable
- observe
- observer
- watch
- object
- hash
- array
- events
- track
- properties
- property change
- dynamic object
(Meta)observability for EventEmitters.
visualize your domain.logic
A lightweight JavaScript library that allows developers to keep track of changes to JavaScript objects and/or DOM elements.
Watch an object or array for changes
A JS Harmony MongoDB/NeDB ODM
A JS Harmony MongoDB/NeDB ODM
Run something when a DOM element appears and when it exits
Functional reactive bindings
Detect when an element is becoming visible or hidden on the page.
Monitor expressions over the execution of a program
Monitor expressions over the execution of a program
Internal notification logic for the 3rd implementation of active expressions.
Snoop on your objects and see what they're up to