Security News
tea.xyz Spam Plagues npm and RubyGems Package Registries
Tea.xyz, a crypto project aimed at rewarding open source contributions, is once again facing backlash due to an influx of spam packages flooding public package registries.
@zip.js/zip.js
Advanced tools
Readme
zip.js is a JavaScript open-source library (BSD-3-Clause license) for compressing and decompressing zip files. It has been designed to handle large amounts of data. It supports notably multi-core compression, native compression with compression streams, archives larger than 4GB with Zip64, split zip files and data encryption.
See https://gildas-lormeau.github.io/zip-manager
See here for more info: https://gildas-lormeau.github.io/zip.js/
import {
BlobReader,
BlobWriter,
TextReader,
TextWriter,
ZipReader,
ZipWriter,
} from "https://deno.land/x/zipjs/index.js";
// ----
// Write the zip file
// ----
// Creates a BlobWriter object where the zip content will be written.
const zipFileWriter = new BlobWriter();
// Creates a TextReader object storing the text of the entry to add in the zip
// (i.e. "Hello world!").
const helloWorldReader = new TextReader("Hello world!");
// Creates a ZipWriter object writing data via `zipFileWriter`, adds the entry
// "hello.txt" containing the text "Hello world!" via `helloWorldReader`, and
// closes the writer.
const zipWriter = new ZipWriter(zipFileWriter);
await zipWriter.add("hello.txt", helloWorldReader);
await zipWriter.close();
// Retrieves the Blob object containing the zip content into `zipFileBlob`. It
// is also returned by zipWriter.close() for more convenience.
const zipFileBlob = await zipFileWriter.getData();
// ----
// Read the zip file
// ----
// Creates a BlobReader object used to read `zipFileBlob`.
const zipFileReader = new BlobReader(zipFileBlob);
// Creates a TextWriter object where the content of the first entry in the zip
// will be written.
const helloWorldWriter = new TextWriter();
// Creates a ZipReader object reading the zip content via `zipFileReader`,
// retrieves metadata (name, dates, etc.) of the first entry, retrieves its
// content via `helloWorldWriter`, and closes the reader.
const zipReader = new ZipReader(zipFileReader);
const firstEntry = (await zipReader.getEntries()).shift();
const helloWorldText = await firstEntry.getData(helloWorldWriter);
await zipReader.close();
// Displays "Hello world!".
console.log(helloWorldText);
Run the code on JSFiddle: https://jsfiddle.net/dns7pkxt/
import {
BlobReader,
ZipReader,
ZipWriter,
} from "https://deno.land/x/zipjs/index.js";
// ----
// Write the zip file
// ----
// Creates a TransformStream object, the zip content will be written in the
// `writable` property.
const zipFileStream = new TransformStream();
// Creates a Promise object resolved to the zip content returned as a Blob
// object retrieved from `zipFileStream.readable`.
const zipFileBlobPromise = new Response(zipFileStream.readable).blob();
// Creates a ReadableStream object storing the text of the entry to add in the
// zip (i.e. "Hello world!").
const helloWorldReadable = new Blob(["Hello world!"]).stream();
// Creates a ZipWriter object writing data into `zipFileStream.writable`, adds
// the entry "hello.txt" containing the text "Hello world!" retrieved from
// `helloWorldReadable`, and closes the writer.
const zipWriter = new ZipWriter(zipFileStream.writable);
await zipWriter.add("hello.txt", helloWorldReadable);
await zipWriter.close();
// Retrieves the Blob object containing the zip content into `zipFileBlob`.
const zipFileBlob = await zipFileBlobPromise;
// ----
// Read the zip file
// ----
// Creates a BlobReader object used to read `zipFileBlob`.
const zipFileReader = new BlobReader(zipFileBlob);
// Creates a TransformStream object, the content of the first entry in the zip
// will be written in the `writable` property.
const helloWorldStream = new TransformStream();
// Creates a Promise object resolved to the content of the first entry returned
// as text from `helloWorldStream.readable`.
const helloWorldTextPromise = new Response(helloWorldStream.readable).text();
// Creates a ZipReader object reading the zip content via `zipFileReader`,
// retrieves metadata (name, dates, etc.) of the first entry, retrieves its
// content into `helloWorldStream.writable`, and closes the reader.
const zipReader = new ZipReader(zipFileReader);
const firstEntry = (await zipReader.getEntries()).shift();
await firstEntry.getData(helloWorldStream.writable);
await zipReader.close();
// Displays "Hello world!".
const helloWorldText = await helloWorldTextPromise;
console.log(helloWorldText);
Run the code on JSFiddle: https://jsfiddle.net/exnyq1ft/
import {
BlobWriter,
HttpReader,
TextReader,
ZipWriter,
} from "https://unpkg.com/@zip.js/zip.js/index.js";
const README_URL = "https://unpkg.com/@zip.js/zip.js/README.md";
getZipFileBlob()
.then(downloadFile);
async function getZipFileBlob() {
const zipWriter = new ZipWriter(new BlobWriter("application/zip"));
await Promise.all([
zipWriter.add("hello.txt", new TextReader("Hello world!")),
zipWriter.add("README.md", new HttpReader(README_URL)),
]);
return zipWriter.close();
}
function downloadFile(blob) {
document.body.appendChild(Object.assign(document.createElement("a"), {
download: "hello.zip",
href: URL.createObjectURL(blob),
textContent: "Download zip file",
}));
}
Run the code on Plunker: https://plnkr.co/edit/4sVljNIpqSUE9HCA?preview
See https://github.com/gildas-lormeau/zip.js/tree/master/tests/all
FAQs
A JavaScript library to zip and unzip files in the browser, Deno and Node.js
The npm package @zip.js/zip.js receives a total of 107,055 weekly downloads. As such, @zip.js/zip.js popularity was classified as popular.
We found that @zip.js/zip.js demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
Tea.xyz, a crypto project aimed at rewarding open source contributions, is once again facing backlash due to an influx of spam packages flooding public package registries.
Security News
As cyber threats become more autonomous, AI-powered defenses are crucial for businesses to stay ahead of attackers who can exploit software vulnerabilities at scale.
Security News
UnitedHealth Group disclosed that the ransomware attack on Change Healthcare compromised protected health information for millions in the U.S., with estimated costs to the company expected to reach $1 billion.