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app_vue/node_modules/eslint-plugin-vue/lib/rules/no-deprecated-functional-template.js

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+/**
+ * @author Yosuke Ota
+ * See LICENSE file in root directory for full license.
+ */
+'use strict'
+
+// ------------------------------------------------------------------------------
+// Requirements
+// ------------------------------------------------------------------------------
+
+const utils = require('../utils')
+
+// ------------------------------------------------------------------------------
+// Rule Definition
+// ------------------------------------------------------------------------------
+
+module.exports = {
+  meta: {
+    type: 'problem',
+    docs: {
+      description:
+        'disallow using deprecated the `functional` template (in Vue.js 3.0.0+)',
+      categories: ['vue3-essential'],
+      url: 'https://eslint.vuejs.org/rules/no-deprecated-functional-template.html'
+    },
+    fixable: null,
+    schema: [],
+    messages: {
+      unexpected: 'The `functional` template are deprecated.'
+    }
+  },
+  /**
+   * @param {RuleContext} context - The rule context.
+   * @returns {RuleListener} AST event handlers.
+   */
+  create(context) {
+    return {
+      Program(program) {
+        const element = program.templateBody
+        if (element == null) {
+          return
+        }
+
+        const functional = utils.getAttribute(element, 'functional')
+
+        if (functional) {
+          context.report({
+            node: functional,
+            messageId: 'unexpected'
+          })
+        }
+      }
+    }
+  }
+}