# Changes to CSS Parser Algorithms

### 2.4.0

_December 15, 2023_

- Fix type definitions
- Only `walk` child nodes if they are still part of the current AST tree [#1202](https://github.com/csstools/postcss-plugins/issues/1202)
- Make `walk` methods safe for mutations [#1204](https://github.com/csstools/postcss-plugins/issues/1204)
- Add a `forEach` method to `FunctionNode` and `SimpleBlockNode`
- Updated [`@csstools/css-tokenizer`](https://github.com/csstools/postcss-plugins/tree/main/packages/css-tokenizer) to [`2.2.2`](https://github.com/csstools/postcss-plugins/tree/main/packages/css-tokenizer/CHANGELOG.md#222) (patch)

### 2.3.2

_September 24, 2023_

- Updated [`@csstools/css-tokenizer`](https://github.com/csstools/postcss-plugins/tree/main/packages/css-tokenizer) to [`2.2.1`](https://github.com/csstools/postcss-plugins/tree/main/packages/css-tokenizer/CHANGELOG.md#221) (patch)

### 2.3.1

_July 24, 2023_

- Updated [`@csstools/css-tokenizer`](https://github.com/csstools/postcss-plugins/tree/main/packages/css-tokenizer) to [`2.2.0`](https://github.com/csstools/postcss-plugins/tree/main/packages/css-tokenizer/CHANGELOG.md#220) (minor)

[Full CHANGELOG](https://github.com/csstools/postcss-plugins/tree/main/packages/css-parser-algorithms/CHANGELOG.md)