method ZipWriter.prototype.addimport { ZipWriter } from "https://deno.land/x/zipjs@v2.6.33/index.js"; add<ReaderType>(filename: string,reader?: | Reader<ReaderType> | ReadableReader | ReadableStream | null,options?: ZipWriterAddDataOptions,): Promise<Entry>Adds an entry into the zip file Adds an entry into the zip file Type ParametersReaderTypeParametersfilename: stringThe filename of the entry. optionalreader: | Reader<ReaderType> | ReadableReader | ReadableStream | nullThe Reader instance used to read the content of the entry. optionaloptions: ZipWriterAddDataOptionsThe options. ReturnsPromise<Entry>A promise resolving to an Entry instance.