michangarrito/apps/backend/node_modules/eslint/lib/rules/no-negated-in-lhs.js
rckrdmrd 48dea7a5d0 feat: Initial commit - michangarrito
Marketplace móvil para negocios locales mexicanos.

Estructura inicial:
- apps/backend (NestJS API)
- apps/frontend (React Web)
- apps/mobile (Expo/React Native)
- apps/mcp-server (Claude MCP Server)
- apps/whatsapp-service (WhatsApp Business API)
- database/ (PostgreSQL DDL)
- docs/ (Documentación)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-07 04:41:02 -06:00

47 lines
1.2 KiB
JavaScript

/**
* @fileoverview A rule to disallow negated left operands of the `in` operator
* @author Michael Ficarra
* @deprecated in ESLint v3.3.0
*/
"use strict";
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
/** @type {import('../shared/types').Rule} */
module.exports = {
meta: {
type: "problem",
docs: {
description: "Disallow negating the left operand in `in` expressions",
recommended: false,
url: "https://eslint.org/docs/latest/rules/no-negated-in-lhs"
},
replacedBy: ["no-unsafe-negation"],
deprecated: true,
schema: [],
messages: {
negatedLHS: "The 'in' expression's left operand is negated."
}
},
create(context) {
return {
BinaryExpression(node) {
if (node.operator === "in" && node.left.type === "UnaryExpression" && node.left.operator === "!") {
context.report({ node, messageId: "negatedLHS" });
}
}
};
}
};