fix: set format amount in main function (#195)

Author: mcarvin8

src/transformers/coverageTransformer.ts

@@ -21,6 +21,7 @@ export async function transformCoverageReport(
 ): Promise<{ finalPaths: string[]; warnings: string[] }> {
   const warnings: string[] = [];
   const finalPaths: string[] = [];
+  const formatAmount: number = formats.length;
   let filesProcessed = 0;
 
   const jsonData = await tryReadJson(jsonFilePath, warnings);
@@ -56,7 +57,7 @@ export async function transformCoverageReport(
 
   for (const [format, handler] of handlers.entries()) {
     const coverageObj = handler.finalize();
-    const finalPath = await generateAndWriteReport(outputReportPath, coverageObj, format, formats);
+    const finalPath = await generateAndWriteReport(outputReportPath, coverageObj, format, formatAmount);
     finalPaths.push(finalPath);
   }
 

src/transformers/reportGenerator.ts

@@ -21,15 +21,15 @@ export async function generateAndWriteReport(
     | JaCoCoCoverageObject
     | IstanbulCoverageObject,
   format: string,
-  allFormats: string[] // NEW PARAMETER
+  formatAmount: number
 ): Promise<string> {
   const content = generateReportContent(coverageObj, format);
   const extension = getExtensionForFormat(format);
 
   const base = basename(outputPath, extname(outputPath)); // e.g., 'coverage'
   const dir = dirname(outputPath);
 
-  const suffix = allFormats.length > 1 ? `-${format}` : '';
+  const suffix = formatAmount > 1 ? `-${format}` : '';
   const filePath = join(dir, `${base}${suffix}${extension}`);
 
   await writeFile(filePath, content, 'utf-8');