import * as fs from "fs"; const clientId = "####-####-####-####-####"; const secret = "##################"; const wordsApi = new WordsApi(clientId, secret); const requestDocument = fs.createReadStream("Sample.doc"); const requestFootnoteDto = new model.FootnoteUpdate({ text: "new text is here" }) const updateRequest = new model.UpdateFootnoteOnlineRequest({ document: requestDocument, index: 0, footnoteDto: requestFootnoteDto }); wordsApi.updateFootnoteOnline(updateRequest) .then((updateRequestResult) => { // tslint:disable-next-line:no-console console.log("Result of updateRequest: ", updateRequestResult); });