Firefox 71: A year-end arrival
Another release is upon us: please welcome Firefox 71 to the stage! This time, we have many new developer tools and features. These include the web socket message inspector, console multi-line editor mode, log-on events, and network panel full-text search!
And as if that wasn’t good enough, essential new web platform features are available, like CSS subgrid, column-span, Promise.allSettled, and the Media Session API.
Read on for more details of the highlights, and find the complete list of additions with the links below:
Developer tools
Let’s start with our new developer tool features! Many of these were made available in Firefox Developer Edition and then improved based on feedback from early adopters. We want to thank you all for your help!
Continued speed and reliability improvements
Improvements in Firefox 71 continue our promise to provide a rock-solid and fast DevTools experience.
We know it’s essential that DevTools load quickly. We have automation to help ensure we keep driving this time down. In 71, we got some help from the JavaScript team when their improvements to caching scripts for startup made Firefox start faster, and DevTools too. One Console test got an astonishing 40% improvement, while times across every panel were boosted by 8-15%!
Interaction with pretty-printed code has gotten a lot of attention. Over past releases, we’ve already improved breakpoint handling and pausing. In 71, links to scripts (like from the event handler tooltip in the Inspector or the stack traces in the Console) reliably get you to the expected line, and debugging sources loaded through eval() now also work as expected.
for the complete article, please visit Mozilla at https://hacks.mozilla.org/2019/12/firefox-71-a-year-end-arrival/
this article had written by Chris Mills.
Chris Mills is a senior tech writer at Mozilla, where he writes docs and demos about open web apps, HTML/CSS/JavaScript, A11y, WebAssembly, and more. He loves tinkering around with web technologies, and gives occasional tech talks at conferences and universities. He used to work for Opera and W3C, and enjoys playing heavy metal drums and drinking good beer. He lives near Manchester, UK, with his good lady and three beautiful children.