no-delete-var.jsā¢852 B
/**
* @fileoverview Rule to flag when deleting variables
* @author Ilya Volodin
*/
"use strict";
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
/** @type {import('../types').Rule.RuleModule} */
module.exports = {
meta: {
type: "suggestion",
docs: {
description: "Disallow deleting variables",
recommended: true,
url: "https://eslint.org/docs/latest/rules/no-delete-var",
},
schema: [],
messages: {
unexpected: "Variables should not be deleted.",
},
},
create(context) {
return {
UnaryExpression(node) {
if (
node.operator === "delete" &&
node.argument.type === "Identifier"
) {
context.report({ node, messageId: "unexpected" });
}
},
};
},
};