12 lines
359 B
JavaScript
12 lines
359 B
JavaScript
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'use strict';
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module.exports = { isLegalPort };
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// Check that the port number is not NaN when coerced to a number,
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// is an integer and that it falls within the legal range of port numbers.
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function isLegalPort(port) {
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if (typeof port === 'string' && port.trim() === '')
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return false;
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return +port === (port >>> 0) && port >= 0 && port <= 0xFFFF;
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}
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