Polyfills and shims

12-month change compares the average of the last 4 weeks of downloads with the first 4 weeks of the 52-week series. Gzip size is for the whole package, as measured by Bundlephobia. "-" means the value has not been fetched.

• stickyfilljsPolyfill for CSS `position: sticky`
• @esri/arcgis-rest-fetchThis package exists to expose the `node-fetch` package in a consistent way for both Node JS 12.16+ and various bundlers with consistent TypeScript types based on the browser types.
• ts-polyfillRuntime polyfills for TypeScript libs, powered by core-js!
• webworker-shimA tiny shim for WebWorker (data URI only) that works in Node.
• @esri/arcgis-rest-form-dataThis package exists to expose the `formdata-node` package in a consistent way for both Node JS 12.16+ and various bundlers with consistent TypeScript types based on the browser types.
• set.prototype.unionAn ESnext spec-compliant `Set.prototype.union` shim/polyfill/replacement that works as far down as ES3
• fetch-readablestreamCompatibility layer for efficient streaming of binary data using [WHATWG Streams](https://streams.spec.whatwg.org/)
• string.prototype.atAn ES-spec-compliant (proposed) String.prototype.at shim/polyfill/replacement that works as far down as ES3
• @ungap/from-entriesAn Object.fromEntries polyfill
• sugar-coreCore module for the Sugar Javascript utility library.
• @textlint/get-config-base-dirContext#getConfigBaseDir ponyfill for textlint ^8.x.x
• @moq/web-socket-streamA WebSocketStream polyfill: a plain WebSocket wrapped as { readable, writable } streams with backpressure
• mq-polyfillCSSOM-valid and jsdom/Jest-compatible matchMedia polyfill for server-side unit tests
• details-element-polyfillHTML <details> element polyfill
• string.prototype.endswithA robust & optimized `String.prototype.endsWith` polyfill, based on the ECMAScript 6 specification.
• postcss-object-fit-imagesPostCSS plugin that updates the standard object-fit tag to work with the object-fit-images polyfill for browsers that do not natively support object-fit.
• map-likeECMAScript Map like object.
• date-time-format-timezoneSurgically polyfills timezone support in Intl.DateTimeFormat API
• react-native-polyfill-globalsPolyfills and patches missing or partially supported web and core APIs
• flexibilityA JavaScript polyfill for Flexbox
• postcss-flexibilityPostCSS plugin for Flexibility polyfill
• @rexxars/eventsource-polyfillA browser polyfill for W3C EventSource (http://www.w3.org/TR/eventsource/)
• react-anchor-link-smooth-scrollReact component for anchor links using the smoothscroll polyfill.
• @expo/match-mediaUniversal polyfill for match media API using Expo APIs on mobile
• object.entries-ponyfill`Object.entries()` ponyfill
• babel-plugin-array-includesReplaces `arr.includes(val)' with `arr.indexOf(val) >= 0`.
• js-polyfillsCollection of Web polyfills.
• random-poly-fillA polyfill for crypto.randomFill and crypto.randomFillSync from Node.js core
• dimportRun ES Module syntax in any browser – even IE!
• element-matchesSuper small `Element.matches` fix for older browsers (IE 9+, Edge 12+, Safari, Android browsers)
• object_valuespolyfill for es8 Object.values
• @ungap/event-targetAn EventTarget polyfill
• parsleyjsValidate your forms, frontend, without writing a single line of javascript!
• @web3modal/polyfills#### 🔗 [Website](https://web3modal.com)
• array.prototype.withAn ESnext spec-compliant `Array.prototype.with` shim/polyfill/replacement that works as far down as ES3.
• grunt-terserGrunt plugin for A JavaScript parser, mangler/compressor and beautifier toolkit for ES6+.
• polyfill-object.fromentriesObject.fromEntries() polyfill
• abort-signal-polyfillA lightweight polyfill for AbortSignal.any, AbortSignal.timeout, and AbortSignal.abort methods
• form-request-submit-polyfill<form>.requestSubmit() polyfill
• web-speech-cognitive-servicesPolyfill Web Speech API with Cognitive Services Speech-to-Text service
• cookie-storeA polyfill for the Cookie Store API
• phantomjs-polyfillPolyfill for Function.prototype.bind
• @web/polyfills-loaderGenerate loader for loading browser polyfills based on feature detection
• aurelia-polyfillsThe minimal set of polyfills that the Aurelia platform needs to run on ES5 browsers.
• webrtc-polyfillHigh performance WebRTC polyfill for Node.JS via libdatachannel using Node Native/NAPI.
• intl-list-formatA fully spec-compliant polyfill for 'Intl.ListFormat'
• jquery-contextmenuManagement facility for context menus. Developed for a large number of triggering objects. HTML5 Polyfill
• @loaders.gl/polyfillsPolyfills for TextEncoder/TextDecoder
• @ungap/import-nodeAn importNode polyfill for IE11 and other legacy browsers
• @ungap/weakmapAn essential WeakMap polyfill for legacy browsers.

• scroll-into-view-if-needed vs @juggle/resize-observer
• css-vars-ponyfill vs object-fit-images