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16 lines
448 B
16 lines
448 B
module.exports = function escape(url) {
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if (typeof url !== 'string') {
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return url
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}
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// If url is already wrapped in quotes, remove them
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if (/^['"].*['"]$/.test(url)) {
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url = url.slice(1, -1);
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}
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// Should url be wrapped?
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// See https://drafts.csswg.org/css-values-3/#urls
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if (/["'() \t\n]/.test(url)) {
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return '"' + url.replace(/"/g, '\\"').replace(/\n/g, '\\n') + '"'
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}
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return url
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}
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