20 lines
464 B
JavaScript
20 lines
464 B
JavaScript
var path = require('path');
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var EXTRE = /\.[^.]*/g;
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var LONGEXTRE = /^[.]?[^.]+([.].+[^.])$/;
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module.exports = function(input) {
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var basename = path.basename(input);
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var longExtension = LONGEXTRE.exec(basename);
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if (!longExtension) {
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return;
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}
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var possibleExtensions = longExtension[1].match(EXTRE);
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if (!possibleExtensions) {
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return;
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}
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return possibleExtensions.map(function(_, idx, exts) {
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return exts.slice(idx).join('');
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});
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};
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