Sha256: 32412989d0bd197ac3b68fa63fa3ab789a7bccb7fb3e4b05052c2e4f828ecad4
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Versions: 45
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Contents
/**
* @fileoverview Rule to flag comparisons to null without a type-checking
* operator.
* @author Ian Christian Myers
*/
"use strict";
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = {
meta: {
docs: {
description: "disallow `null` comparisons without type-checking operators",
category: "Best Practices",
recommended: false
},
schema: []
},
create: function(context) {
return {
BinaryExpression: function(node) {
var badOperator = node.operator === "==" || node.operator === "!=";
if (node.right.type === "Literal" && node.right.raw === "null" && badOperator ||
node.left.type === "Literal" && node.left.raw === "null" && badOperator) {
context.report(node, "Use ‘===’ to compare with ‘null’.");
}
}
};
}
};
Version data entries
45 entries across 45 versions & 2 rubygems