# JSZip 3.7.0

- Product: JSZip (https://whatsnew.fyi/product/jszip)
- Vendor: Stuart Knightley
- Date: 2021-07-23
- Version: 3.7.0
- Original notes: https://www.npmjs.com/package/jszip/v/3.7.0
- Permalink: https://whatsnew.fyi/product/jszip/releases/3.7.0

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **fixed** — Use a null prototype object for the files property to prevent files in the zip from overriding object methods
- **changed** — Code using prototype methods on the files property of a zip object, such as zip.files.toString(), may break

- Fix: Use a null prototype object for this.files  (see [#766](https://github.com/Stuk/jszip/pull/766))
    + This change might break existing code if it uses prototype methods on the `.files` property of a zip object, for example `zip.files.toString()`. This approach is taken to prevent files in the zip overriding object methods that would exist on a normal object.