adm-zip: Invalid or unsupported zip format. No END header found

Error:

Jerrys-MacBook-Pro:client jerrygreen$ node zip.js 

/Users/jerrygreen/my_project/node_modules/adm-zip/zipFile.js:66
			throw Utils.Errors.INVALID_FORMAT;
			^
Invalid or unsupported zip format. No END header found

My (simple) code:

const AdmZip = require('adm-zip')
const zip = new AdmZip('./my_file.zip')

I’m using Macos 10.14.1 By opening it from Finder (using default Archive Utility app) it’s unzipping nicely, no problems

About this issue

Original URL
State: open
Created 6 years ago
Reactions: 24
Comments: 20

Most upvoted comments

I made a workaround for this as I was getting the zip file externally and then saved locally to extract.

A setTimeout solved my issue.

	const saveZIPFile = async () => {
		return new Promise((resolve) => {
			data.body.pipe(fs.createWriteStream(path.resolve(__dirname, `${project}.zip`)));

			data.body.on('end', () => {
				setTimeout(() => {
					resolve();
				}, 1000);
			});
		});
	};

	await saveZIPFile();

	var zip = new AdmZip(path.resolve(__dirname, `${project}.zip`));

	zip.extractAllTo(path), true);

krisrefs on Jan 13, 2022

Anyone still experiencing the issue? Would appreciate a solution that is not dependent on ditto if possible.

const zipPath = `./temp/file.zip`;
const zip = new AdmZip(zipPath);
zip.extractAllTo(`./temp/`, true);

The terminal output is:

Error: Invalid or unsupported zip format. No END header found
    at readMainHeader (/Users/username/Projects/example-project/node_modules/adm-zip/zipFile.js:107:10)
    at new module.exports (/Users/username/Projects/example-project/node_modules/adm-zip/zipFile.js:19:3)
    at new module.exports (/Users/username/Projects/example-project/node_modules/adm-zip/adm-zip.js:20:11)
    at module.exports._installWordpress (/Users/username/Projects/example-project/generators/app/index.js:102:17)
    at module.exports.writing (/Users/username/Projects/example-project/generators/app/index.js:45:12)
    at Object.<anonymous> (/Users/username/Projects/example-project/node_modules/yeoman-generator/lib/index.js:399:25)
    at /Users/username/Projects/example-project/node_modules/run-async/index.js:49:25
    at new Promise (<anonymous>)
    at /Users/username/Projects/example-project/node_modules/run-async/index.js:26:19
    at /Users/username/Projects/example-project/node_modules/yeoman-generator/lib/index.js:400:11

csalmeida on Nov 20, 2020

I had the same problem and it turned out to be an issue with how I download the file. I never waited for the download to complete before attempting to unzip it.

Solution: Properly await the download and only then start working with the ZIP file.

nhuethmayr on Apr 1, 2022

This happened to me once, but when retrying (same code, same file) it works. Weird.

iget-master on Mar 18, 2021