node/tools/eslint/lib/rules/no-delete-var.js
Rich Trott f44969a5ab tools: update ESLint to current version
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>
2017-01-06 14:36:27 -08:00

35 lines
801 B
JavaScript

/**
* @fileoverview Rule to flag when deleting variables
* @author Ilya Volodin
*/
"use strict";
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = {
meta: {
docs: {
description: "disallow deleting variables",
category: "Variables",
recommended: true
},
schema: []
},
create(context) {
return {
UnaryExpression(node) {
if (node.operator === "delete" && node.argument.type === "Identifier") {
context.report({ node, message: "Variables should not be deleted." });
}
}
};
}
};