No description
b661614265
* enabled `optimizeUniversalDefaults` by default
This PR is done in a way so that the default is set to `true`, but you
can still disable it if it causes issues. In this case we do appreciate
an issue in that case 😅.
* update tests to use optimized universal selector
* update integration tests
* add dedicated tests for the optimized universal selector
* improve minimumImpactSelector algorithm
I think I cracked the algorithm, but I will probably need another pair
of eyes on the subject.
The current implementation works like this:
Prerequisites:
- The selector should already have been parsed using the selectorParser
from 'postcss-selector-parser'.
Algorithm:
1. Remove all of the pseudo classes from the list of nodes.
1.1. We do want to keep pseudo elements (E.g.: `::before`, `::first-line`, ...)
1.2. We do want to keep pseudo classes that contain nodes (E.g.:
`:not(...)`)
2. Reverse the list of nodes.
This will make it easier to search from the end to the start. For
example `.group:hover .group-hover` should result in `.group-hover`
not `.group`.
2.1. Find the index of the best match (class, id, attribute), and
convert the node if required. (E.g.: `span#app` -> `#app` => `[id="app"]`)
2.2. Remove the rest of the selector that is not important anymore
2.3. Re-join the left-over nodes together
* update tests using new algorithm
* also look for `tag` types
* take `tag` into account
* simplify logic
* add test to prove `rest.reverse()` in first case is required
In case we don't find a match (idx === -1), we use `rest.reverse()`.
However, it looks like you can just use `nodes` instead.
This is not entirely true, because the `rest` variable will contain only
the nodes that are not pseudo elements.
`*:hover` would result in `*:hover` instead of just `*`
* replace all nodes after > with a single universal selector
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