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PR-URL: https://github.com/iojs/io.js/pull/1539 Fixes: https://github.com/iojs/io.js/issues/1253 Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com> Reviewed-By: Trevor Norris <trev.norris@gmail.com> Reviewed-By: Roman Reiss <me@silverwind.io> Reviewed-By: Chris Dickinson <christopher.s.dickinson@gmail.com> Reviewed-By: Johan Bergström <bugs@bergstroem.nu> Reviewed-By: Fedor Indutny <fedor.indutny@gmail.com>
25 lines
742 B
JavaScript
25 lines
742 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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