40 lines
887 B
JavaScript
40 lines
887 B
JavaScript
/**
|
|
* @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' });
|
|
}
|
|
},
|
|
};
|
|
},
|
|
};
|