fix(no-deprecated-slot-attribute): handle v-for with dynamic slot (#2529)

Author: privatenumber

lib/rules/syntaxes/slot-attribute.js

@@ -56,10 +56,8 @@ module.exports = {
         // parse error or empty expression
         return false
       }
-      const slotName = sourceCode.getText(slotAttr.value.expression).trim()
-      // If non-Latin characters are included it can not be converted.
-      // It does not check the space only because `a>b?c:d` should be rejected.
-      return !/[^a-z]/i.test(slotName)
+
+      return slotAttr.value.expression.type === 'Identifier'
     }
 
     /**
@@ -102,7 +100,18 @@ module.exports = {
           yield fixer.remove(scopeAttr)
         }
 
-        yield fixer.insertTextBefore(element, `<template ${replaceText}>\n`)
+        const vFor = startTag.attributes.find(
+          (attr) => attr.directive && attr.key.name.name === 'for'
+        )
+        const vForText = vFor ? `${sourceCode.getText(vFor)} ` : ''
+        if (vFor) {
+          yield fixer.remove(vFor)
+        }
+
+        yield fixer.insertTextBefore(
+          element,
+          `<template ${vForText}${replaceText}>\n`
+        )
         yield fixer.insertTextAfter(element, `\n</template>`)
       }
     }

tests/lib/rules/no-deprecated-slot-attribute.js

@@ -643,6 +643,31 @@ tester.run('no-deprecated-slot-attribute', rule, {
         }
       ],
       errors: ['`slot` attributes are deprecated.']
+    },
+    {
+      code: `
+      <template>
+        <my-component>
+          <slot
+            v-for="slot in Object.keys($slots)"
+            :slot="slot"
+            :name="slot"
+          ></slot>
+        </my-component>
+      </template>`,
+      output: `
+      <template>
+        <my-component>
+          <template v-for="slot in Object.keys($slots)" v-slot:[slot]>
+<slot
+            
+            
+            :name="slot"
+          ></slot>
+</template>
+        </my-component>
+      </template>`,
+      errors: ['`slot` attributes are deprecated.']
     }
   ]
 })