method ZipWriter.prototype.addimport { ZipWriter } from "https://deno.land/x/zipjs@v2.6.21/index.js"; add<ReaderType>(filename: string,reader: | Reader<ReaderType> | ReadableReader | null | undefined,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. reader: | Reader<ReaderType> | ReadableReader | null | undefinedThe Reader instance used to read the content of the entry. optionaloptions: ZipWriterAddDataOptionsThe options. ReturnsPromise<Entry>A promise resolving to an Entry instance.