buffer 받아서 임시적으로 내부 수정하는 부분 적용.

packages/common/business_components/src/ui/excel_download/index.tsx

@@ -50,22 +50,26 @@ export const filePicked=(oFile: File, headerNum:number=0):Promise<JSON | undefin
     reader.readAsBinaryString(oFile);
   });
 }
-export const filePickedPath=(oFile: ArrayBuffer, headerNum:number=0):Promise<JSON | undefined> =>{
+export const filePickedBlob=(oFile: ArrayBuffer, headerNum:number=0):Promise<JSON | undefined> =>{
   // Create A File Reader HTML5
   return new Promise<JSON | undefined>((resolve) => {
     // Ready The Event For When A File Gets Selected
       const wb = XLSX.read(oFile, { type: 'binary' });
       let jsonXls: JSON | undefined;
       // Loop Over Each Sheet
-      wb.SheetNames.forEach(function (sheetName) {
+      wb.SheetNames.forEach(function (sheetName, index) {
         // Obtain The Current Row As CSV
-        const sheet = wb.Sheets[sheetName];
-        if (sheet) {
-          jsonXls = XLSX.utils.sheet_to_json(sheet, { range: headerNum }) as unknown as JSON;
-          console.log("jsonXls", jsonXls);
-        } else {
-          console.error(`Sheet "${sheetName}" is undefined.`);
-        }
+        if(index==0){
+          const sheet = wb.Sheets[sheetName];
+          if (sheet) {
+            XLSX.utils.sheet_add_json(sheet, [["시작"]], { origin: "A20" });
+            jsonXls = XLSX.utils.sheet_to_json(sheet, { range: headerNum }) as unknown as JSON;
+            XLSX.writeFile(wb, "test.xlsx");
+            console.log("jsonXls", jsonXls);
+          } else {
+            console.error(`Sheet "${sheetName}" is undefined.`);
+          }
+        } 
       });
       resolve(jsonXls);
   });