How to delete blank rows for multiple sheets using google API - google-apps-script

Question

I have a case that i want to delete blank rows for multiple sheets. I want to use Google Sheet API because the SpreadsheetApp method takes too long and i get the timeout error because of it. I have 10k+ rows.
I already made my own code (Spreadsheet method version):
function myFunction() {
const sheet = ['', '', '', '']; //sheets name
for (let i in sheet) {
const ss = SpreadsheetApp.getActiveSpreadsheet().getSheetByName(sheet[i]);
const maxrow = sheet.getMaxRows();
const lastrow = sheet.getLastRow();
if (maxrow - lastrow > 10) {
ss.deleteRows(lastrow + 10, maxrow - lastrow - 10);
}
}
}

Answer 1

I believe your goal is as follows.
You want to modify your showing script using Sheets API.
In your script, it seems that sheet is an array. So, I think that an error occurs at const maxrow = sheet.getMaxRows();. Please be careful about this.
In this case, how about the following modification?
Modified script:
Please enable Sheets API at Advanced Google services. Ref
function myFunction() {
const sheet = ['Sheet1', 'Sheet2',,,]; // Please set sheet names you want to use.
const ss = SpreadsheetApp.getActiveSpreadsheet();
const requests = sheet.reduce((ar, s) => {
const sheet = ss.getSheetByName(s);
const maxrow = sheet.getMaxRows();
const lastrow = sheet.getLastRow();
if (maxrow - lastrow > 10) {
ar.push({ deleteDimension: { range: { sheetId: sheet.getSheetId(), startIndex: lastrow + 10, endIndex: maxrow, dimension: "ROWS" } } });
}
return ar;
}, []);
if (requests.length == 0) return;
Sheets.Spreadsheets.batchUpdate({ requests }, ss.getId());
}
References:
Method: spreadsheets.batchUpdate
DeleteDimensionRequest