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21 lines
605 B
JavaScript
21 lines
605 B
JavaScript
6 years ago
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/**
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* A Series of utility functions
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*/
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/**
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* returns the extension of a file for the given filename.
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* @param {String} filename The name of the file.
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* @return {String} A string that represents the file-extension.
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*/
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exports.getExtension = function(filename) {
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if (!filename) return null;
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try {
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let exts = filename.match(/\.[a-z]+/g); // get the extension by using regex
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if (exts) return exts[exts.length - 1]; // return the found extension
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else return null; // return null if no extension could be found
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} catch (error) {
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logger.warn(error);
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return null;
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}
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}
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