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app_vue/node_modules/eslint-plugin-vue/lib/rules/no-restricted-class.js

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+/**
+ * @fileoverview Forbid certain classes from being used
+ * @author Tao Bojlen
+ */
+'use strict'
+
+// ------------------------------------------------------------------------------
+// Requirements
+// ------------------------------------------------------------------------------
+const utils = require('../utils')
+
+// ------------------------------------------------------------------------------
+// Helpers
+// ------------------------------------------------------------------------------
+/**
+ * Report a forbidden class
+ * @param {string} className
+ * @param {*} node
+ * @param {RuleContext} context
+ * @param {Set<string>} forbiddenClasses
+ */
+const reportForbiddenClass = (className, node, context, forbiddenClasses) => {
+  if (forbiddenClasses.has(className)) {
+    const loc = node.value ? node.value.loc : node.loc
+    context.report({
+      node,
+      loc,
+      messageId: 'forbiddenClass',
+      data: {
+        class: className
+      }
+    })
+  }
+}
+
+/**
+ * @param {Expression} node
+ * @param {boolean} [textOnly]
+ * @returns {IterableIterator<{ className:string, reportNode: ESNode }>}
+ */
+function* extractClassNames(node, textOnly) {
+  if (node.type === 'Literal') {
+    yield* `${node.value}`
+      .split(/\s+/)
+      .map((className) => ({ className, reportNode: node }))
+    return
+  }
+  if (node.type === 'TemplateLiteral') {
+    for (const templateElement of node.quasis) {
+      yield* templateElement.value.cooked
+        .split(/\s+/)
+        .map((className) => ({ className, reportNode: templateElement }))
+    }
+    for (const expr of node.expressions) {
+      yield* extractClassNames(expr, true)
+    }
+    return
+  }
+  if (node.type === 'BinaryExpression') {
+    if (node.operator !== '+') {
+      return
+    }
+    yield* extractClassNames(node.left, true)
+    yield* extractClassNames(node.right, true)
+    return
+  }
+  if (textOnly) {
+    return
+  }
+  if (node.type === 'ObjectExpression') {
+    for (const prop of node.properties) {
+      if (prop.type !== 'Property') {
+        continue
+      }
+      const classNames = utils.getStaticPropertyName(prop)
+      if (!classNames) {
+        continue
+      }
+      yield* classNames
+        .split(/\s+/)
+        .map((className) => ({ className, reportNode: prop.key }))
+    }
+    return
+  }
+  if (node.type === 'ArrayExpression') {
+    for (const element of node.elements) {
+      if (element == null) {
+        continue
+      }
+      if (element.type === 'SpreadElement') {
+        continue
+      }
+      yield* extractClassNames(element)
+    }
+    return
+  }
+}
+
+// ------------------------------------------------------------------------------
+// Rule Definition
+// ------------------------------------------------------------------------------
+module.exports = {
+  meta: {
+    type: 'problem',
+    docs: {
+      description: 'disallow specific classes in Vue components',
+      url: 'https://eslint.vuejs.org/rules/no-restricted-class.html',
+      categories: undefined
+    },
+    fixable: null,
+    messages: {
+      forbiddenClass: "'{{class}}' class is not allowed."
+    },
+    schema: {
+      type: 'array',
+      items: {
+        type: 'string'
+      }
+    }
+  },
+
+  /** @param {RuleContext} context */
+  create(context) {
+    const forbiddenClasses = new Set(context.options || [])
+
+    return utils.defineTemplateBodyVisitor(context, {
+      /**
+       * @param {VAttribute & { value: VLiteral } } node
+       */
+      'VAttribute[directive=false][key.name="class"]'(node) {
+        node.value.value
+          .split(/\s+/)
+          .forEach((className) =>
+            reportForbiddenClass(className, node, context, forbiddenClasses)
+          )
+      },
+
+      /** @param {VExpressionContainer} node */
+      "VAttribute[directive=true][key.name.name='bind'][key.argument.name='class'] > VExpressionContainer.value"(
+        node
+      ) {
+        if (!node.expression) {
+          return
+        }
+
+        for (const { className, reportNode } of extractClassNames(
+          /** @type {Expression} */ (node.expression)
+        )) {
+          reportForbiddenClass(className, reportNode, context, forbiddenClasses)
+        }
+      }
+    })
+  }
+}