fix(code-gen): add trailing comma in multi-line imports

Author: dirkdev98

packages/code-gen/src/target/javascript.js

@@ -94,11 +94,11 @@ export class JavascriptImportCollector {
 
       if (isMultiline) {
         result.push(
-          `import${this.isTypeImports ? " type" : ""} {\n  ${symbols.join(",\n  ")}\n} from "${key}";`,
+          `import${this.isTypeImports ? " type" : ""} {\n  ${symbols.join(",\n  ")},\n} from "${key}";`,
         );
       } else {
         result.push(
-          `import${this.isTypeImports ? " type" : ""} { ${symbols.join(",")} } from "${key}";`,
+          `import${this.isTypeImports ? " type" : ""} { ${symbols.join(", ")} } from "${key}";`,
         );
       }
     }

packages/code-gen/src/validators/javascript.js

@@ -548,7 +548,7 @@ export function validatorJavascriptArray(file, type, validatorState) {
     fileWrite(file, `/** @type {any|any[]} */`);
     fileWrite(
       file,
-      `let intermediateValue${validatorState.reusedVariableIndex} = ${valuePath};\n`,
+      `${type.validator.convert ? "let" : "const"} intermediateValue${validatorState.reusedVariableIndex} = ${valuePath};\n`,
     );
   }