---
title: "pako Breaking Changes on npm | Since.dev"
description: "What each pako release removed, renamed or changed: 48 breaking changes in 1 version on npm, each with its source."
canonical_url: https://since.dev/packages/npm/pako
last_updated: 2026-06-26
---

# pako breaking changes

Every breaking API change we have recorded in pako on npm: 48 breaking changes in 1 version. Below are its newest version, removals and renames first, each with its source.

Newest change June 26, 2026

## 3.0.0

48 breaking changes, first published June 26, 2026.

- **Removed** `constants`  

constants was removed in pako 3.0.0 [npmjs.com](https://www.npmjs.com/package/pako/v/3.0.0)
- **Removed** `Data`  

Data was removed in pako 3.0.0 [npmjs.com](https://www.npmjs.com/package/pako/v/3.0.0)
- **Removed** `default`  

The package no longer has a default export. Use a namespace import to get the whole API as an object. [npmjs.com](https://www.npmjs.com/package/pako/v/3.0.0)
- **Removed** `DeflateFunctionOptions`  

DeflateFunctionOptions was removed in pako 3.0.0 [npmjs.com](https://www.npmjs.com/package/pako/v/3.0.0)
- **Removed** `DeflateOptions.header`  

DeflateOptions.header was removed in pako 3.0.0 [npmjs.com](https://www.npmjs.com/package/pako/v/3.0.0)
- **Removed** `FlushValues`  

FlushValues was removed in pako 3.0.0 [npmjs.com](https://www.npmjs.com/package/pako/v/3.0.0)
- **Removed** `Header`  

Header was removed in pako 3.0.0 [npmjs.com](https://www.npmjs.com/package/pako/v/3.0.0)
- **Removed** `Inflate`  

The to: 'string' option was removed from Inflate, which now always emits byte chunks. Convert bytes to text yourself. [github.com](https://github.com/nodeca/pako/blob/3.0.0/CHANGELOG.md)
- **Removed** `Inflate.header`  

Inflate.header was removed in pako 3.0.0 [npmjs.com](https://www.npmjs.com/package/pako/v/3.0.0)
- **Removed** `InflateFunctionOptions`  

InflateFunctionOptions was removed in pako 3.0.0 [npmjs.com](https://www.npmjs.com/package/pako/v/3.0.0)

And 38 more in this version.

## Check your code

These are the changes. To see which of them reach your code, [scan a public repository](https://since.dev/scan.md), or have your coding agent call `check_code` with your manifest or lockfile over [MCP](https://since.dev/docs.md#mcp). [The API](https://since.dev/docs.md#api) reads every change in every version, not only the newest. On Team and up, a fix pull request opens for the changes that reach a connected repository. Nothing merges or deploys.

## Put your code on continuous management.

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### See how out of date your code is.

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---

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