node/tools/eslint/lib/rules/no-undefined.js
silverwind d9b8758f47 tools: update ESLint to 2.7.0
PR-URL: https://github.com/nodejs/node/pull/6132
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: thefourtheye <thechargingvolcano@gmail.com>
2016-04-20 16:24:21 -07:00

28 lines
768 B
JavaScript

/**
* @fileoverview Rule to flag references to the undefined variable.
* @author Michael Ficarra
*/
"use strict";
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = function(context) {
return {
"Identifier": function(node) {
if (node.name === "undefined") {
var parent = context.getAncestors().pop();
if (!parent || parent.type !== "MemberExpression" || node !== parent.property || parent.computed) {
context.report(node, "Unexpected use of undefined.");
}
}
}
};
};
module.exports.schema = [];