Add components

slider/node_modules/eslint-plugin-vue/lib/rules/require-toggle-inside-transition.js

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+/**
+ * @author Yosuke Ota
+ * See LICENSE file in root directory for full license.
+ */
+'use strict'
+
+const utils = require('../utils')
+
+/**
+ * @param {VDirective} vBindAppear
+ */
+function isValidBindAppear(vBindAppear) {
+  if (
+    vBindAppear.value?.expression &&
+    vBindAppear.value.expression.type === 'Literal'
+  ) {
+    return vBindAppear.value.expression?.value !== false
+  }
+
+  return true
+}
+
+/**
+ * @param {string[]} directives
+ */
+function createDirectiveList(directives) {
+  let str = ''
+
+  for (const [index, directive] of directives.entries()) {
+    if (index === 0) {
+      str += `\`v-${directive}\``
+    } else if (index < directives.length - 1) {
+      str += `, \`v-${directive}\``
+    } else {
+      str += ` or \`v-${directive}\``
+    }
+  }
+
+  return str
+}
+
+module.exports = {
+  meta: {
+    type: 'problem',
+    docs: {
+      description:
+        'require control the display of the content inside `<transition>`',
+      categories: ['vue3-essential'],
+      url: 'https://eslint.vuejs.org/rules/require-toggle-inside-transition.html'
+    },
+    fixable: null,
+    schema: [
+      {
+        type: 'object',
+        properties: {
+          additionalDirectives: {
+            type: 'array',
+            items: {
+              type: 'string'
+            },
+            uniqueItems: true
+          }
+        },
+        additionalProperties: false
+      }
+    ],
+    messages: {
+      expected:
+        'The element inside `<transition>` is expected to have a {{allowedDirectives}} directive.'
+    }
+  },
+  /** @param {RuleContext} context */
+  create(context) {
+    /** @type {Array<string>} */
+    const additionalDirectives =
+      (context.options[0] && context.options[0].additionalDirectives) || []
+    const allowedDirectives = ['if', 'show', ...additionalDirectives]
+    const allowedDirectivesString = createDirectiveList(allowedDirectives)
+
+    /**
+     * Check if the given element has display control.
+     * @param {VElement} element The element node to check.
+     */
+    function verifyInsideElement(element) {
+      if (utils.isCustomComponent(element)) {
+        return
+      }
+
+      /** @type VElement */ // @ts-expect-error
+      const parent = element.parent
+      const vBindAppear = utils.getDirective(parent, 'bind', 'appear')
+      if (
+        utils.hasAttribute(parent, 'appear') ||
+        (vBindAppear && isValidBindAppear(vBindAppear))
+      ) {
+        return
+      }
+
+      if (
+        element.name !== 'slot' &&
+        !allowedDirectives.some((directive) =>
+          utils.hasDirective(element, directive)
+        ) &&
+        !utils.hasDirective(element, 'bind', 'key')
+      ) {
+        context.report({
+          node: element.startTag,
+          loc: element.startTag.loc,
+          messageId: 'expected',
+          data: {
+            allowedDirectives: allowedDirectivesString
+          }
+        })
+      }
+    }
+
+    return utils.defineTemplateBodyVisitor(context, {
+      /** @param {VElement} node */
+      "VElement[name='transition'] > VElement"(node) {
+        const child = node.parent.children.find(utils.isVElement)
+        if (child !== node) {
+          return
+        }
+
+        verifyInsideElement(node)
+      }
+    })
+  }
+}