f44969a5ab
We have been stalled on ESLint 3.8.0 for some time. Current ESLint is 3.13.0. We have been unable to upgrade because of more aggressive reporting on some rules, including indentation. ESLint configuration options and bugfixes are now such that we can reasonably upgrade. PR-URL: https://github.com/nodejs/node/pull/10561 Reviewed-By: Teddy Katz <teddy.katz@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
34 lines
883 B
JavaScript
34 lines
883 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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*/
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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 = {
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meta: {
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docs: {
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description: "require calls to `isNaN()` when checking for `NaN`",
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category: "Possible Errors",
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recommended: true
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},
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schema: []
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},
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create(context) {
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return {
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BinaryExpression(node) {
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if (/^(?:[<>]|[!=]=)=?$/.test(node.operator) && (node.left.name === "NaN" || node.right.name === "NaN")) {
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context.report({ node, message: "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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};
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