conver excel to json
用 vscode，開始轉檔工具專案
安裝套件 控制台，執行 npm install
改啟用的程式檔 編輯.vscode/launch.json
"name": "index.js",
"program": "${workspaceFolder}\\index.js"
準備 excel 編輯 excel 並 copy 到 ExcelToBeConverted 目錄
在 vscode 按 f5 執行轉檔 console 出現以下 log，就是成功
Read sheet Demo
Write sheet to json ${workspaceFolder}/Demo.json
ps: 若在 json 中出現空行{}，表示 excel 有空白行，請將無資料的儲存檔刪除
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