eslint-plugin-vue/dist/rules/no-duplicate-attributes.js

Official ESLint plugin for Vue.js

'use strict';

const require_runtime = require('../_virtual/_rolldown/runtime.js');
const require_index = require('../utils/index.js');

//#region lib/rules/no-duplicate-attributes.js
/**
* @author Toru Nagashima
* @copyright 2017 Toru Nagashima. All rights reserved.
* See LICENSE file in root directory for full license.
*/
var require_no_duplicate_attributes = /* @__PURE__ */ require_runtime.__commonJSMin(((exports, module) => {
	const utils = require_index.default;
	/**
	* Get the name of the given attribute node.
	* @param {VAttribute | VDirective} attribute The attribute node to get.
	* @returns {string | null} The name of the attribute.
	*/
	function getName(attribute) {
		if (!attribute.directive) return attribute.key.name;
		if (attribute.key.name.name === "bind") return attribute.key.argument && attribute.key.argument.type === "VIdentifier" && attribute.key.argument.name || null;
		return null;
	}
	module.exports = {
		meta: {
			type: "problem",
			docs: {
				description: "disallow duplication of attributes",
				categories: ["vue3-essential", "vue2-essential"],
				url: "https://eslint.vuejs.org/rules/no-duplicate-attributes.html"
			},
			fixable: null,
			schema: [{
				type: "object",
				properties: {
					allowCoexistClass: { type: "boolean" },
					allowCoexistStyle: { type: "boolean" }
				},
				additionalProperties: false
			}],
			messages: { duplicateAttribute: "Duplicate attribute '{{name}}'." }
		},
		create(context) {
			const options = context.options[0] || {};
			const allowCoexistStyle = options.allowCoexistStyle !== false;
			const allowCoexistClass = options.allowCoexistClass !== false;
			/** @type {Set<string>} */
			const directiveNames = /* @__PURE__ */ new Set();
			/** @type {Set<string>} */
			const attributeNames = /* @__PURE__ */ new Set();
			/**
			* @param {string} name
			* @param {boolean} isDirective
			*/
			function isDuplicate(name, isDirective) {
				if (allowCoexistStyle && name === "style" || allowCoexistClass && name === "class") return isDirective ? directiveNames.has(name) : attributeNames.has(name);
				return directiveNames.has(name) || attributeNames.has(name);
			}
			return utils.defineTemplateBodyVisitor(context, {
				VStartTag() {
					directiveNames.clear();
					attributeNames.clear();
				},
				VAttribute(node) {
					const name = getName(node);
					if (name == null) return;
					if (isDuplicate(name, node.directive)) context.report({
						node,
						loc: node.loc,
						messageId: "duplicateAttribute",
						data: { name }
					});
					if (node.directive) directiveNames.add(name);
					else attributeNames.add(name);
				}
			});
		}
	};
}));

//#endregion
Object.defineProperty(exports, 'default', {
  enumerable: true,
  get: function () {
    return require_no_duplicate_attributes();
  }
});