You’ll be able to turn that feature off, but I hope you won’t.
Īdditional, Rails 6 just committed to shipping source maps by default in production, also thanks to Webpack.
That in itself is a great reason to ship source maps. Not something you ship to production, although people have also been doing that, such that live debugging would be easier. But there’s been some recent chatter about making sure they go to production as well.īut source maps have long been seen merely as a local development tool. gitignore them or skip them in a deployment process in order to serve and store fewer assets to production. I’d say in general, they are used for local development. I’m sure I make use of them just about every day. They are particularly useful for you and your team because they help tremendously for debugging issues as well as day-to-day work. So, these source maps are for developers. I believe that with Sass, you don’t even have to pass a flag for it in the command or anything because it produces source maps by default. Typically, source maps are a configuration option from the preprocessor. Like I said up top, source maps are special files that connect that final output file the browser is actually using with the authored files that you actually work with and write code in on your file system. meta has position: relative īut because that final CSS file is probably minified (all whitespace removed), DevTools is likely to tell us that we’ll find the declaration we’re looking for on line 1! Unfortunate, and not helpful for development. On line 528 of page.css, we can find out that. That final CSS file is what gets loaded in the browser, so for example, when you inspect an element in DevTools, it might tell you that the is display: flex because it says so on line 387 in global.css. Say you’ve got a file called _header.scss that gets imported into global.scss which is compiled to global.css. A “source map” is a special file that connects a minified/uglified version of an asset (CSS or JavaScript) to the original authored version.
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