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31 lines
920 B
31 lines
920 B
10 years ago
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/**
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* @fileoverview Rule to flag for-in loops without if statements inside
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* @author Nicholas C. Zakas
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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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"ForInStatement": function(node) {
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/*
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* If the for-in statement has {}, then the real body is the body
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* of the BlockStatement. Otherwise, just use body as provided.
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*/
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var body = node.body.type === "BlockStatement" ? node.body.body[0] : node.body;
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if (body && body.type !== "IfStatement") {
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context.report(node, "The body of a for-in should be wrapped in an if statement to filter unwanted properties from the prototype.");
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}
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}
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};
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};
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