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'use strict'; |
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module.exports = function (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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url = url.trim(); |
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if (/^\.*\/|^(?!localhost)\w+:/.test(url)) { |
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return url; |
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} |
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return url.replace(/^(?!(?:\w+:)?\/\/)/, 'http://'); |
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};
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