The following snippet of code implements a function which will take a Buffer
of a ZIP archive file contents and find a single deflated file inside, which it
will then inflate and return the result as another Buffer.
It works by first looking for the EOCD (end of central directory) entry, from it
identifying the corresponding CD (central directory) entry and from it the data
size and offset of the DEFLATE stream.
The stream is then fed into zlib Node built-in module's function inflateRaw.
The implementation can be found in index.js or referenced via ESM
HTTP imports if you use the experimental --experimental-network-imports CLI
flag.
import extract from 'https://tomashubelbauer.github.io/node-extract-zip/index.js';
const buffer = await extract(await fs.promises.readFile('archive.zip'));
const text = buffer.toString();
const data = JSON.parse(buffer);This repository has an associated GitHub Pages site.
This is so that index.js can be accessed with a correct MIME type to be usable
with ESM.
The badge at the top relates to the GitHub Actions workflow for GitHub Pages.