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PR-URL: https://github.com/nodejs/io.js/pull/2072 Reviewed-By: Yosuke Furukawa <yosuke.furukawa@gmail.com> Reviewed-by: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Alex Kocharin <alex@kocharin.ru>
27 lines
771 B
JavaScript
27 lines
771 B
JavaScript
/**
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* @fileoverview Rule to flag comparisons to the value NaN
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* @author James Allardice
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* @copyright 2014 Jordan Harband. All rights reserved.
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* @copyright 2013 James Allardice. All rights reserved.
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Rule Definition
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//------------------------------------------------------------------------------
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module.exports = function (context) {
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return {
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"BinaryExpression": function (node) {
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if (/^(?:[<>]|[!=]=)=?$/.test(node.operator) && (node.left.name === "NaN" || node.right.name === "NaN")) {
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context.report(node, "Use the isNaN function to compare with NaN.");
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}
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}
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};
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};
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module.exports.schema = [];
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