Bumps [postcss](https://github.com/postcss/postcss) from 8.4.23 to 8.4.31.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.23...8.4.31)

---
updated-dependencies:
- dependency-name: postcss
  dependency-type: indirect
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* Bump @metamask/auto-changelog from 3.2.0 to 3.3.0

Bumps [@metamask/auto-changelog](https://github.com/MetaMask/auto-changelog) from 3.2.0 to 3.3.0.
- [Release notes](https://github.com/MetaMask/auto-changelog/releases)
- [Changelog](https://github.com/MetaMask/auto-changelog/blob/main/CHANGELOG.md)
- [Commits](MetaMask/auto-changelog@v3.2.0...v3.3.0)

---
updated-dependencies:
- dependency-name: "@metamask/auto-changelog"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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* yarn dedupe

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Co-authored-by: legobt <6wbvkn0j@anonaddy.me>

* Use tsup for bundling

* Simplify CI workflows

* Remove unused dependency

* Remove unnecessary config option

* Use `tsc` for generating declarations

* Fix formatting of package.json

* Enable code splitting

* Revert some changes

* Bump @babel/traverse from 7.21.4 to 7.23.2

Bumps [@babel/traverse](https://github.com/babel/babel/tree/HEAD/packages/babel-traverse) from 7.21.4 to 7.23.2.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.23.2/packages/babel-traverse)

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updated-dependencies:
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  dependency-type: indirect
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* yarn dedupe

---------

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: legobt <6wbvkn0j@anonaddy.me>

This commit satisfies a few needs that we have in various projects:

- When catching a throwable from some kind of operation, we want to
  be able to test whether the throwable is an error.
- Furthermore, since the Error interface in TypeScript is pretty simple,
  we want to be able to test for different properties on an error
  (`code`, `stack`, etc.).
- We want to wrap an error produced by a lower level part of the system
  with a different message, but preserve the original error using the
  `cause` property (note: this property was added in Node 18, so for
  older Nodes, we use the `pony-cause` library to set this).
- We want to be able to take a throwable and produce an error that has a
  stacktrace. This is particularly useful for working with the
  `fs.promises` module, which (as of Node 22) [does not produce proper
  stacktraces][1].
- We want to be able to get a message from a throwable.

[1]: nodejs/node#30944

---------

Co-authored-by: Jongsun Suh <34228073+MajorLift@users.noreply.github.com>
Co-authored-by: legobeat <109787230+legobeat@users.noreply.github.com>

* devDeps: depcheck@^1.4.3->^1.4.7

* update depcheckrc

This commit adds several utility functions that are related to the
filesystem in some way.

- Most of the functions here are wrappers around basic filesystem
  operations with better error handling. Node's `fs.promises` module is
  somewhat difficult to work with because [the errors it produces lack
  proper stacktraces][1]. The functions that directly use `fs.promises`
  wrap caught errors in order to supply the missing stacktraces.
- Two functions make it easier to read and write JSON files (with support
  for JSON-compatible interfaces, such as [JSON5][2]).
- One function, `createSandbox`, is designed to wrap tests that need
  a temporary directory to work within, such as those for a command-line
  tool that makes changes to the filesystem.

Here are places where we currently use these utilities (or something
like them):

- https://github.com/MetaMask/action-utils/blob/54ddd730746668cb4c1c88b4edfa720cbecf5e32/src/file-utils.ts
- https://github.com/MetaMask/create-release-branch/blob/3556dee47163c921186051be7a1f3c98e2049db9/src/fs.ts
- https://github.com/MetaMask/create-release-branch/blob/3556dee47163c921186051be7a1f3c98e2049db9/tests/helpers.ts

One note about these utilities is that they require Node to use and will
not work in the browser. Because we already create two kinds of bundles,
one for CommonJS and another ESM, it would be difficult to create a
second level of bundles, one for Node and another for the browser.
Instead of requiring more complexity around the bundle configuration,
this commit instead introduces another way to import the package.

By default, you'll get all exports that are guaranteed to be
cross-platform. That means that the file utilities won't show up:

``` typescript
// ❌
import { readFile } from "@metamask/utils";
```

If you want all of the cross-platform exports plus the Node-specific
ones, you will have to import "@metamask/utils/node". For instance:

``` typescript
// ✅
import { readFile } from "@metamask/utils/node";
```

Note that you will need to use a `moduleResolution` of `nodenext`
(and not `node`) in your TypeScript project in order to take advantage
of this.

[1]: nodejs/node#30944
[2]: https://www.npmjs.com/package/json5

---

Co-authored-by: Maarten Zuidhoorn <maarten@zuidhoorn.com>
Co-authored-by: legobeat <109787230+legobeat@users.noreply.github.com>

* Add struct utils for validating JSON objects with optional values

* Add type tests

* Update existing structs to use jsonObject struct

* Add test for coverage

* Fix type of InferWithParams

* Rename to object and exactOptional

* Fix type test

* Remove unused imports

* Rename test names

* Address review comments

* Update src/json.test.ts

Co-authored-by: Elliot Winkler <elliot.winkler@gmail.com>

* Update src/json.ts

Co-authored-by: Elliot Winkler <elliot.winkler@gmail.com>

* Update snapshots

* Move some tests

---------

Co-authored-by: Elliot Winkler <elliot.winkler@gmail.com>

These exports should have been included in a previous commit but were
left out.

* 8.2.0

* Update CHANGELOG.md

* Add extra PR for error utils

---------

Co-authored-by: github-actions <github-actions@github.com>
Co-authored-by: Maarten Zuidhoorn <maarten@zuidhoorn.com>
Co-authored-by: Elliot Winkler <elliot.winkler@gmail.com>
Co-authored-by: legobeat <109787230+legobeat@users.noreply.github.com>