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CSSForge is an open-source Rust CLI and interactive terminal workbench for forward CSS modernization. Refactor flat CSS into native nesting, modern selectors, range media queries and cleaner at-rule structures while checking specificity, cascade order and declaration preservation.
Hi Product Hunt 👋
I built CSSForge after looking into a deceptively difficult CSS tooling problem:
Why do we have many tools for compiling modern/nested CSS into flat CSS, but far fewer tools that can safely take an existing flat stylesheet and move it forward?
The answer is the cascade.
For example, this transformation may look harmless:
.alpha .title,
#hero .title {}
→
:is(.alpha, #hero) .title {}
but it can change specificity.
Likewise, gathering a .card:hover rule from later in a file into an earlier .card block can change source-order behavior. Moving declarations between cascade layers is even more sensitive.
So I built CSSForge around a different rule:
Don't transform because something looks equivalent. Transform only after checking whether it is equivalent.
CSSForge is written in Rust and includes both an interactive TUI and headless CLI. The current rules cover native nesting, selector factoring, range media syntax, conditional at-rules, repeated @layer blocks, identical rule bodies and other structural refactors.
I also wanted the diffs to remain reviewable, so its documented mutation model patches targeted source ranges instead of reserializing the entire stylesheet.
I'd really appreciate feedback from frontend/CSS developers on:
selectors that are especially difficult to refactor
cascade edge cases
transformations you'd like CSSForge to support
cases where a tool should refuse rather than guess
Docs:
https://jayeshmepani.github.io/c...
Source:
https://github.com/jayeshmepani/...
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About CSSForge on Product Hunt
“Safely refactor legacy CSS into modern native CSS”
CSSForge was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #160 on the daily leaderboard. CSSForge is an open-source Rust CLI and interactive terminal workbench for forward CSS modernization. Refactor flat CSS into native nesting, modern selectors, range media queries and cleaner at-rule structures while checking specificity, cascade order and declaration preservation.
CSSForge was featured in Open Source (68.8k followers), Developer Tools (518.4k followers) and GitHub (41.4k followers) on Product Hunt. Together, these topics include over 124.3k products, making this a competitive space to launch in.
Who hunted CSSForge?
CSSForge was hunted by Jayesh Patel. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Jayesh Patel