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In a browser, the JavaScript engine runs in concert with the rendering engine via the Document Object Model and Web IDL bindings. [2] However, the use of JavaScript engines is not limited to browsers; for example, the V8 engine is a core component of the Node.js runtime system. [3]
V8 is a JavaScript and WebAssembly engine developed by Google for its Chrome browser. [1] [4] V8 is free and open-source software that is part of the Chromium project and also used separately in non-browser contexts, notably the Node.js runtime system. [1]
Node.js relies on nghttp2 for HTTP support. As of version 20, Node.js uses the ada library which provides up-to-date WHATWG URL compliance. As of version 19.5, Node.js uses the simdutf library for fast Unicode validation and transcoding. As of version 21.3, Node.js uses the simdjson library for fast JSON parsing.
React DOM – Fix passive effects (useEffect) not being fired in a multi-root app. React Is – Fix lazy and memo types considered elements instead of components 16.13.0 26 February 2020 Features added in React Concurrent mode. Fix regressions in React core library and React Dom. 16.14.0 14 October 2020 Add support for the new JSX transform. 17.0.0
[citation needed] Both the main and renderer processes can run with Node.js integration if the nodeIntegration field in the main process is set to true. [citation needed] Most of Electron's APIs are written in C++ or Objective-C and are exposed directly to the application code through JavaScript bindings. [11]
PDF viewer support from Chromium's PDFium PDF viewer is still supported though. The single-process run mode is not supported, but still present; currently is being used for debugging purposes only. [8] On March 16, 2019, the CEF version numbering changed with the release of CEF 73.1.3+g46cf800+chromium-73.0.3683.75.
On April 3, 2013, Google announced that it had forked WebCore, a component of WebKit, to be used in future versions of Google Chrome and the Opera web browser, under the name Blink. [12] [13] Its JavaScript engine, JavascriptCore, also powers the Bun server-side JS runtime, [14] as opposed to V8 used by Node.js, Deno, and Blink.
Google Chrome permanently dropped all NPAPI support from all platforms in September 2015. [14] In September 2013, Google announced that it would phase out NPAPI support in its Google Chrome browser during 2014, stating that "[its] 90s-era architecture has become a leading cause of hangs, crashes, security incidents, and code complexity".