[code-infra] Remove redundant markdownlint-cli2 machinery by Janpot · Pull Request #1511 · mui/mui-public

Janpot · 2026-06-02T14:53:41Z

Markdown linting across MUI now runs through ESLint via the markdown: true flag passed to createBaseConfig from @mui/internal-code-infra/eslint. mui-public's own eslint.config.mjs already passes markdown: true, so the separate markdownlint-cli2 self-lint and the shared @mui/internal-code-infra/markdownlint export are redundant and can be removed.

Removed:

Root .markdownlint-cli2.mjs config, the markdownlint script, and the markdownlint-cli2 devDependency in package.json.
The packages/code-infra/src/markdownlint/ directory and the ./markdownlint entry from packages/code-infra/package.json's exports map.
The markdownlint command/job from .circleci/orbs/code-infra.yml (both its definition and its reference in run-linters).
The markdownlint.config setting from .vscode/settings.json.

The ESLint markdown: true flag stays in place as the replacement.

code-infra-dashboard · 2026-06-02T14:54:15Z

Deploy preview

https://deploy-preview-1511--mui-internal.netlify.app/

Bundle size

Total Size Change: 0B^(0.00%) - Total Gzip Change: 0B^(0.00%)
Files: 63 total (0 added, 0 removed, 0 changed)

Show details for 63 more bundles

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Details of bundle changes

Performance

Total duration: 16.88 ms -3.23 ms^(-16.0%) | Renders: 4 ⁽⁺⁰⁾ | Paint: 70.04 ms -12.25 ms^(-14.9%)

Test	Duration	Renders
DataGrid mount with paint timing	2.63 ms ▼-1.04 ms^(-28.2%)	1 ⁽⁺⁰⁾

2 tests within noise — details

Check out the code infra dashboard for more information about this PR.

Remove redundant markdownlint-cli2 machinery

5ca3eae

oliviertassinari temporarily deployed to remove-markdownlint-cli2 - mui-tools-public PR #1511 June 2, 2026 14:53 — with Render Destroyed

oliviertassinari temporarily deployed to remove-markdownlint-cli2 - code-infra-dashboard PR #1511 June 2, 2026 14:53 — with Render Destroyed

Janpot added the scope: code-infra Involves the code-infra product (https://www.notion.so/mui-org/5562c14178aa42af97bc1fa5114000cd). label Jun 2, 2026

Janpot changed the title ~~Remove redundant markdownlint-cli2 machinery~~ [code-infra] Remove redundant markdownlint-cli2 machinery Jun 2, 2026

Janpot marked this pull request as ready for review June 2, 2026 16:57

Janpot requested a review from a team June 2, 2026 16:57

github-actions Bot added the PR: out-of-date The pull request has merge conflicts and can't be merged. label Jun 10, 2026

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[code-infra] Remove redundant markdownlint-cli2 machinery#1511

[code-infra] Remove redundant markdownlint-cli2 machinery#1511
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Janpot commented Jun 2, 2026

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code-infra-dashboard Bot commented Jun 2, 2026 •

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Janpot commented Jun 2, 2026

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code-infra-dashboard Bot commented Jun 2, 2026 •

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