feat: autofix in define-props-declaration: runtime syntax to type-based syntax (#2465)

handle union type

Author: mpiniarski

lib/rules/define-props-declaration.js

@@ -110,6 +110,16 @@ function optionGetType(node, sourceCode) {
 
       return sourceCode.getText(typeArgument)
     }
+    case 'LogicalExpression': {
+      if (node.operator === '||') {
+        const left = optionGetType(node.left, sourceCode)
+        const right = optionGetType(node.right, sourceCode)
+        if (left && right) {
+          return `${left} | ${right}`
+        }
+      }
+      return sourceCode.getText(node)
+    }
     default: {
       return sourceCode.getText(node)
     }

tests/lib/rules/define-props-declaration.js

@@ -588,6 +588,30 @@ tester.run('define-props-declaration', rule, {
         }
       ]
     },
+    // Union type (Number || String)
+    {
+      filename: 'test.vue',
+      code: `
+        <script setup lang="ts">
+        const props = defineProps({
+          kind: {
+            type: Number || String
+          }
+        })
+        </script>
+      `,
+      output: `
+        <script setup lang="ts">
+        const props = defineProps<{ kind: number | string }>()
+        </script>
+      `,
+      errors: [
+        {
+          message: 'Use type-based declaration instead of runtime declaration.',
+          line: 3
+        }
+      ]
+    },
     // Some unhandled expression type
     {
       filename: 'test.vue',