feat(react-email): colocate components in react-email

[gabrielmfern]

Summary

• Colocates the @react-email/body component source into the react-email package
• Fixes type issues in CLI and body component files

Stack: 2/11 — Depends on #3232

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Summary by cubic

Colocated @react-email/{body,button,code-block,code-inline,column,container,font,head,heading,hr,html,img,link,markdown,preview,row,section,text,tailwind} into react-email, removed their standalone packages, and exported them from the root. Updated CLI/tests to ESM-safe import paths to keep builds green.

• Refactors

  • Body: inner table wrapper resets margin/padding; user styles applied on inner cell for client compatibility.
  • Button: colocated with padding utils/tests; preserves Outlook padding handling.
  • CodeBlock: colocated with languages/themes; tightened token typing.
  • Link, Markdown, Preview, Row, Section, Text: colocated and exported from the root.
  • CodeInline, Column, Container, Font, Head, Heading, Hr, Html, Img: colocated and exported from the root.
  • Tailwind: colocated and exported from the root.
  • Added root/component barrel exports; build src/index.ts (ESM/CJS + DTS) and included TSX.
  • Fixed ESM-only imports by adding .js extensions and JSON import assertions in CLI/tests.

• Dependencies

  • Added marked, prismjs, css-tree, and tailwindcss to react-email.
  • Added dev @react-email/render, @types/css-tree, and @responsive-email/react-email.

^{Written for commit 75438bb. Summary will update on new commits.}

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Project	Deployment	Actions	Updated (UTC)
react-email	Error		Apr 13, 2026 3:29pm
react-email-demo	Error		Apr 13, 2026 3:29pm
react-email-examples	Error		Apr 13, 2026 3:29pm

[changeset-bot]

⚠️ No Changeset found

Latest commit: 75438bb

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commit: 1b66c88

[cubic-dev-ai]

No issues found across 13 files

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.