Rewrite Purger #46
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Rewrite Purger #46
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This rewrite accomplishes a few things: * Fixes rails#20. Closes rails#22. * Purges selectors that aren't on the same line as their block brace: **Before** ```css .sm\:aspect-w-1, /* ... */ .sm\:aspect-w-15 > *, @media (prefers-color-scheme: dark) { } ``` * Purges empty "at rule" blocks (e.g. empty `@media` blocks). * Purges comments, except within property values. * Adds support for nested selector blocks, to prepare for the future. For example, Tailwind has many `.group:hover .group-hover\:X` rules that could be written as `.group:hover { .group-hover\:X { ... } }`. * Improves performance: **Before** ```bash $ bin/test -n test_basic_purge Finished in 2.307380s, 0.4334 runs/s, 3.0337 assertions/s. 1 runs, 7 assertions, 0 failures, 0 errors, 0 skips ``` **After** ```bash $ bin/test -n test_basic_purge Finished in 1.824162s, 0.5482 runs/s, 3.8374 assertions/s. 1 runs, 7 assertions, 0 failures, 0 errors, 0 skips ```
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@dhh What is the process for getting this merged and released? Have this gem been abandoned? |
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This rewrite accomplishes a few things:
Fixes group-hover classes are not removed #20. Closes Add test for group-hover classes #22.
Purges selectors that aren't on the same line as their block brace:
Before
Purges empty "at rule" blocks (e.g. empty
@mediablocks).Purges comments, except within property values.
Adds support for nested selector blocks, to prepare for the future. For example, Tailwind has many
.group:hover .group-hover\:Xrules that could be written as.group:hover { .group-hover\:X { ... } }.Improves performance:
Before
$ bin/test -n test_basic_purge Finished in 2.307380s, 0.4334 runs/s, 3.0337 assertions/s. 1 runs, 7 assertions, 0 failures, 0 errors, 0 skipsAfter
$ bin/test -n test_basic_purge Finished in 1.824162s, 0.5482 runs/s, 3.8374 assertions/s. 1 runs, 7 assertions, 0 failures, 0 errors, 0 skipsFor reference: the purged CSS from the test fixtures was 35,099 bytes before this change, and 22,141 bytes after this change.