d91e10b3bd
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>
51 lines
1.5 KiB
JavaScript
51 lines
1.5 KiB
JavaScript
/**
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* @fileoverview Disallow shadowing of NaN, undefined, and Infinity (ES5 section 15.1.1)
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* @author Michael Ficarra
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* @copyright 2013 Michael Ficarra. 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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var RESTRICTED = ["undefined", "NaN", "Infinity", "arguments", "eval"];
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function checkForViolation(id) {
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if (RESTRICTED.indexOf(id.name) > -1) {
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context.report(id, "Shadowing of global property \"" + id.name + "\".");
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}
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}
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return {
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"VariableDeclarator": function(node) {
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checkForViolation(node.id);
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},
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"ArrowFunctionExpression": function(node) {
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if (node.id) {
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checkForViolation(node.id);
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}
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[].map.call(node.params, checkForViolation);
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},
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"FunctionExpression": function(node) {
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if (node.id) {
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checkForViolation(node.id);
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}
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[].map.call(node.params, checkForViolation);
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},
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"FunctionDeclaration": function(node) {
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if (node.id) {
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checkForViolation(node.id);
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[].map.call(node.params, checkForViolation);
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}
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},
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"CatchClause": function(node) {
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checkForViolation(node.param);
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}
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};
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};
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module.exports.schema = [];
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