[Snyk] Security upgrade markdown-it from 9.1.0 to 14.0.0

[cjrobbertse-ob]

Snyk has created this PR to fix 1 vulnerabilities in the yarn dependencies of this project.

Snyk changed the following file(s):

• package.json
• yarn.lock

Note for zero-installs users

If you are using the Yarn feature zero-installs that was introduced in Yarn V2, note that this PR does not update the .yarn/cache/ directory meaning this code cannot be pulled and immediately developed on as one would expect for a zero-install project - you will need to run yarn to update the contents of the ./yarn/cache directory.
If you are not using zero-install you can ignore this as your flow should likely be unchanged.

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Regular Expression Denial of Service (ReDoS) SNYK-JS-LINKIFYIT-17817062	721

Breaking Change Risk

Notice: This assessment is enhanced by AI.

---

Important

• Check the changes in this PR to ensure they won't cause issues with your project.
• Max score is 1000. Note that the real score may have changed since the PR was raised.
• This PR was automatically created by Snyk using the credentials of a real user.

---

Note: You are seeing this because you or someone else with access to this repository has authorized Snyk to open fix PRs.

For more information:
🧐 View latest project report
📜 Customise PR templates
🛠 Adjust project settings
📚 Read about Snyk's upgrade logic

---

Learn how to fix vulnerabilities with free interactive lessons:

🦉 Regular Expression Denial of Service (ReDoS)

[cjrobbertse-ob]

The upgrade of markdown-it from v9.1.0 to v14.0.0 is a major update spanning five major versions. It introduces significant breaking changes, most notably the transition to an ES Module (ESM) package format.

Key Breaking Changes:

• ESM Rewrite (v14.0.0): The package has been rewritten to use ES Modules. While a CJS fallback is provided, this can break existing require() statements in Node.js environments or require configuration changes in bundlers and test runners.
• Plugin and API Incompatibility: Internal APIs and token structures have changed across multiple versions. Plugins written for v9 are unlikely to be compatible with v14. For example:
  • The highlight function signature was changed in v10.0.0 to include a third attrs argument.
  • Table rendering was rewritten in v10.0.0 to align with GFM specifications, which could affect styling and plugins that interact with tables.
  • Internal token handling changed in v13.0.0, which could break custom rules.
• Browser and Environment Support (v14.0.0): Support for older browsers has been dropped as the library now uses modern JavaScript features.

Recommendation:
This upgrade requires careful migration. Developers must:

1. Verify their import statements (require vs. import) are compatible with the new ESM-first package.
2. Review and update all markdown-it plugins to ensure they are compatible with v14.
3. Test rendering output, especially for tables and code blocks using custom highlighters, as behavior has changed.

Source: Official Changelog

Notice 🤖: This content was augmented using artificial intelligence. AI-generated content may contain errors and should be reviewed for accuracy before use.