mirror of
https://github.com/react/react-native-devtools-frontend.git
synced 2026-10-01 01:38:07 +08:00
Tim van der Lippe
706ec965fb
These packages will be used to dynamically optimize SVG images during the build. R=jacktfranklin@chromium.org Bug: 1216402 Change-Id: I04e95aa7d79c9d67beaf8a7861182c52b16b7d0f Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2939992 Reviewed-by: Jack Franklin <jacktfranklin@chromium.org> Commit-Queue: Tim van der Lippe <tvanderlippe@chromium.org>
57 lines
1.4 KiB
JavaScript
57 lines
1.4 KiB
JavaScript
module.exports = function specificity(simpleSelector) {
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var A = 0;
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var B = 0;
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var C = 0;
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simpleSelector.children.each(function walk(node) {
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switch (node.type) {
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case 'SelectorList':
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case 'Selector':
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node.children.each(walk);
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break;
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case 'IdSelector':
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A++;
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break;
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case 'ClassSelector':
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case 'AttributeSelector':
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B++;
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break;
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case 'PseudoClassSelector':
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switch (node.name.toLowerCase()) {
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case 'not':
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node.children.each(walk);
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break;
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case 'before':
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case 'after':
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case 'first-line':
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case 'first-letter':
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C++;
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break;
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// TODO: support for :nth-*(.. of <SelectorList>), :matches(), :has()
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default:
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B++;
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}
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break;
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case 'PseudoElementSelector':
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C++;
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break;
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case 'TypeSelector':
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// ignore universal selector
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if (node.name.charAt(node.name.length - 1) !== '*') {
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C++;
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}
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break;
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}
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});
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return [A, B, C];
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};
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