chore: refactor componentPropsTypeCode creation

Author: mpiniarski

Diff for: lib/rules/define-props-declaration.js

@@ -24,12 +24,14 @@ function* fixTypeBased(fixer, node, props, context) {
       getComponentPropData(prop, sourceCode)
     )
 
-    const componentPropsTypeCode = `{${componentPropsData
-      .map(({ name, type, required, defaultValue }) => {
+    const componentPropsTypes = componentPropsData.map(
+      ({ name, type, required, defaultValue }) => {
         const isOptional = required === false || defaultValue
         return `${name}${isOptional ? '?' : ''}: ${type}`
-      })
-      .join(PROPS_SEPARATOR)}}`
+      }
+    )
+
+    const componentPropsTypeCode = `{${componentPropsTypes.join(PROPS_SEPARATOR)}}`
 
     // remove defineProps function parameters
     yield fixer.replaceText(node.arguments[0], '')