71 lines
1.7 KiB
JavaScript
71 lines
1.7 KiB
JavaScript
'use strict';
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/**
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* Maps the long pseudo name to the short pseudo name. Pseudos that match here will be ordered, everything else will
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* make their way to default style bucket. We reduce the pseudo name to save bundlesize.
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* Thankfully there aren't any overlaps, see: https://developer.mozilla.org/en-US/docs/Web/CSS/Pseudo-classes.
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*/
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const pseudosMap = {
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// :focus-within
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'us-w': 'w',
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// :focus-visible
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'us-v': 'i',
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// :link
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nk: 'l',
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// :visited
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si: 'v',
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// :focus
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cu: 'f',
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// :hover
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ve: 'h',
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// :active
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ti: 'a'
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};
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/**
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* Gets the bucket depending on the pseudo.
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*
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* Input:
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*
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* ```
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* ":hover"
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* ":focus:hover"
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* ```
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*
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* Output:
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*
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* ```
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* "h"
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* "f"
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* ```
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*
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* @internal
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*/
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function getStyleBucketName(selectors, atRules) {
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if (atRules.media) {
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return 'm';
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}
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// We are grouping all the at-rules like @supports etc. under `t` bucket.
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if (atRules.layer || atRules.supports) {
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return 't';
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}
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if (atRules.container) {
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return 'c';
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}
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if (selectors.length > 0) {
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const normalizedPseudo = selectors[0].trim();
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if (normalizedPseudo.charCodeAt(0) === 58 /* ":" */) {
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// We send through a subset of the string instead of the full pseudo name.
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// For example:
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// - `"focus-visible"` name would instead of `"us-v"`.
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// - `"focus"` name would instead of `"us"`.
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// Return a mapped pseudo else default bucket.
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return pseudosMap[normalizedPseudo.slice(4, 8)] /* allows to avoid collisions between "focus-visible" & "focus" */ || pseudosMap[normalizedPseudo.slice(3, 5)] || 'd';
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}
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}
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// Return default bucket
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return 'd';
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}
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exports.getStyleBucketName = getStyleBucketName;
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//# sourceMappingURL=getStyleBucketName.cjs.js.map
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