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This page tracks Mozilla's positions on open Web and Web-related specifications submitted to standards bodies like the IETF, W3C, and Ecma TC39. Please remember, this isn't a commitment to implement or participate; it's just what we think right now. See dev-platform to find out what we're implementing. Want Mozilla's position on a specification? Find out more. legend The possible positions are: po
Web Replay is no longer developed by Mozilla; however, the work continues as a standalone project. Learn more Web Replay allows Firefox content processes to record their behavior, replay it later, and rewind to earlier states. Replaying processes preserve all the same JS behavior, DOM structures, graphical updates, and most other behaviors that occurred while recording. DevTools' Debugger and Co
As Lin Clark emphasizes in her article about Rust and WebAssembly: the goal of WebAssembly is not to replace JavaScript, but to be an awesome tool to use with JavaScript. Lots of amazing work has been done to simplify crossing the language boundary between JavaScript and WebAssembly, and you can read all about that in Alex Crichton’s post on wasm-bindgen. This post focuses on a different type of J
Reading To do macros we need to read. To read we need to match delimiters and build a token tree to know where a macro invocation ends. But JS complicates this because delimiters can appear inside of a regex literal and deciding if / is the start of a regex or the division operator depends on parsing context. The read algorithm follows but see also the DLS 14 paper which goes into more detail. Giv
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