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// Source: https://www.w3.org/TR/cssom-1/#serialize-an-identifier
// Control characters and non-letter first symbols are not supported
const escapeRegex = /[!"#$%&'()*+,./:;<=>?@[\\\]^`{|}~-]+/g;
const dashesAtEnds = /(^-|-$)/g;
/**
* TODO: Explore using CSS.escape when it becomes more available
* in evergreen browsers.
*/
export default function escape(str: string) {
return str // Replace all possible CSS selectors
.replace(escapeRegex, '-') // Remove extraneous hyphens at the start and end
.replace(dashesAtEnds, '');
}
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