29 lines
743 B
JavaScript
29 lines
743 B
JavaScript
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// Can unquote attribute detection
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// Adopted implementation of Mathias Bynens
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// https://github.com/mathiasbynens/mothereff.in/blob/master/unquoted-attributes/eff.js
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const blockUnquoteRx = /^(-?\d|--)|[\u0000-\u002c\u002e\u002f\u003A-\u0040\u005B-\u005E\u0060\u007B-\u009f]/;
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function canUnquote(value) {
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if (value === '' || value === '-') {
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return false;
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}
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return !blockUnquoteRx.test(value);
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}
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export default function(node) {
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const attrValue = node.value;
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if (!attrValue || attrValue.type !== 'String') {
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return;
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}
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if (canUnquote(attrValue.value)) {
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node.value = {
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type: 'Identifier',
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loc: attrValue.loc,
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name: attrValue.value
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};
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}
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};
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