17 lines
403 B
JavaScript
17 lines
403 B
JavaScript
'use strict';
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module.exports = url => {
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if (typeof url !== 'string') {
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throw new TypeError(`Expected a \`string\`, got \`${typeof url}\``);
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}
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// Don't match Windows paths `c:\`
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if (/^[a-z]:\\/.test(url)) {
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return false;
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}
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// Scheme: https://tools.ietf.org/html/rfc3986#section-3.1
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// Absolute URL: https://tools.ietf.org/html/rfc3986#section-4.3
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return /^[a-z][a-z\d+-.]*:/.test(url);
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};
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