UNPKG

801 BJavaScriptView Raw
1/**
2 * @fileoverview Rule to flag when deleting variables
3 * @author Ilya Volodin
4 */
5
6"use strict";
7
8//------------------------------------------------------------------------------
9// Rule Definition
10//------------------------------------------------------------------------------
11
12module.exports = {
13 meta: {
14 docs: {
15 description: "disallow deleting variables",
16 category: "Variables",
17 recommended: true
18 },
19
20 schema: []
21 },
22
23 create(context) {
24
25 return {
26
27 UnaryExpression(node) {
28 if (node.operator === "delete" && node.argument.type === "Identifier") {
29 context.report({ node, message: "Variables should not be deleted." });
30 }
31 }
32 };
33
34 }
35};