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app_vue/node_modules/eslint-plugin-vue/lib/rules/jsx-uses-vars.js

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+// the following rule is based on yannickcr/eslint-plugin-react
+
+/**
+The MIT License (MIT)
+
+Copyright (c) 2014 Yannick Croissant
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+ */
+
+/**
+ * @fileoverview Prevent variables used in JSX to be marked as unused
+ * @author Yannick Croissant
+ */
+'use strict'
+
+// ------------------------------------------------------------------------------
+// Rule Definition
+// ------------------------------------------------------------------------------
+
+module.exports = {
+  meta: {
+    type: 'problem',
+    docs: {
+      description: 'prevent variables used in JSX to be marked as unused', // eslint-disable-line eslint-plugin/require-meta-docs-description
+      categories: ['base'],
+      url: 'https://eslint.vuejs.org/rules/jsx-uses-vars.html'
+    },
+    schema: []
+  },
+  /**
+   * @param {RuleContext} context - The rule context.
+   * @returns {RuleListener} AST event handlers.
+   */
+  create(context) {
+    return {
+      JSXOpeningElement(node) {
+        let name
+        if (node.name.type === 'JSXIdentifier') {
+          // <Foo>
+          name = node.name.name
+        } else if (node.name.type === 'JSXMemberExpression') {
+          // <Foo...Bar>
+          let parent = node.name.object
+          while (parent.type === 'JSXMemberExpression') {
+            parent = parent.object
+          }
+          name = parent.name
+        } else {
+          return
+        }
+
+        context.markVariableAsUsed(name)
+      }
+    }
+  }
+}