[DEV-2561] upgrade to nextjs 15 react 19 #1691

tommaso1 · 2025-09-16T18:15:05Z

Core Dependencies Upgraded

Next.js: 14.2.30 → 15.5.3
React: 18.3.1 → 19.1.1
React DOM: 18.3.1 → 19.1.1
TypeScript: 5.1.6 → 5.9.2

Material-UI Upgraded to v7

@mui/material: 5.14.5 → 7.3.2
@mui/icons-material: 5.14.3 → 7.3.2
@mui/lab: 5.0.0-alpha.140 → 7.0.0-beta.17
@mui/utils: 5.14.5 → 7.3.2
Added: @mui/base, @mui/styles, @mui/x-tree-view

ESLint Migration

ESLint: 8.47.0 → 9.35.0
Migrated from .eslintrc.json to eslint.config.js (flat config)
Added ESLint plugins: @typescript-eslint, prettier, react-hooks, functional

Configuration Updates

Enabled Turbopack: "dev": "next dev --turbopack"
Added React type overrides for v19 compatibility

Dependencies Removed

isomorphic-dompurify
jsdom
@bufbuild/jest-environment-jsdom
jest-environment-jsdom

Dependencies Added

rapidoc: 9.3.8
ESLint ecosystem packages for flat config support

Code Changes

530+ files auto-formatted to comply with new ESLint rules
No business logic modifications
All changes are formatting/linting related

List of Changes

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

Chore (nothing changes by a user perspective)
Bug fix (non-breaking change which fixes an issue)
New feature (non-breaking change which adds functionality)
Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

My change requires a change to the documentation.
I have updated the documentation accordingly.

Co-authored-by: marcobottaro <[email protected]>

…ade-nextjs-15-react-19

…be updated

changeset-bot · 2025-09-16T18:15:09Z

🦋 Changeset detected

Latest commit: 82af7c8

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
nextjs-website	Minor

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

github-actions · 2025-09-17T15:07:19Z

Jira Pull Request Link

This Pull Request refers to the following Jira issue DEV-2561

github-actions · 2025-09-17T15:07:22Z

Branch is not up to date with base branch

@tommaso1 it seems this Pull Request is not updated with base branch.
Please proceed with a merge or rebase to solve this.

github-actions · 2025-09-17T15:07:24Z

This PR exceeds the recommended size of 800 lines. Please make sure you are NOT addressing multiple issues with one PR. Note this PR might be rejected due to its size.

Copilot

Pull Request Overview

This pull request upgrades the project from Next.js 14/React 18 to Next.js 15/React 19, with Material-UI upgraded to v7, ESLint migrated to v9 with flat config, and TypeScript upgraded to v5.9.2. The changes primarily involve automatic formatting/linting updates to comply with new ESLint rules, dependency version updates, and necessary code adaptations for framework compatibility.

Key changes include:

Core framework upgrades (Next.js 15.5.3, React 19.1.1, TypeScript 5.9.2)
Material-UI ecosystem upgrade to v7 with new Grid API usage
ESLint migration to flat config with new plugins
API viewer replacement from Stoplight Elements to RapidOC

Reviewed Changes

Copilot reviewed 243 out of 245 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
package.json	Adds rapidoc dependency for new API viewer
tsconfig.json	Adds lib configuration for TypeScript 5.9.2 compatibility
convertEmojiToUnicode.ts	Type annotation fix for tag parameter
Various component files	Migration to new MUI Grid API and component prop updates
Route handlers	Adaptation to Next.js 15 async params API
ESLint-related files	Mass formatting changes for new ESLint rules compliance

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

Copilot · 2025-09-23T14:20:46Z

packages/gitbook-docs/src/convertEmojiToUnicode.ts

  }
  const fallbackResult = emojiData.find(({ tags }) =>
-    tags?.some((tag) => tag === emojiName)
+    tags?.some((tag: any) => tag === emojiName)


Using any type defeats the purpose of TypeScript's type safety. Consider defining a proper type for the tag parameter or using a more specific type annotation.

Suggested change

tags?.some((tag: any) => tag === emojiName)

tags?.some((tag: string) => tag === emojiName)

Copilot · 2025-09-23T14:20:47Z

apps/nextjs-website/src/helpers/parseCkEditorContent.helpers.ts

+  // Use regex-based approach for server-side compatibility
+  const headingRegex = /<(h[1-4])[^>]*>(.*?)<\/\1>/gi;
+  let processedContent = content;
+  let match;


Using let for the match variable and assignment in while condition can be error-prone. Consider using a more functional approach or at least declare the variable with proper typing: let match: RegExpExecArray | null;

Suggested change

let match;

let match: RegExpExecArray | null;

Copilot · 2025-09-23T14:20:47Z

apps/nextjs-website/src/components/atoms/ApiViewer/ApiViewer.tsx

+declare global {
+  namespace React.JSX {
+    interface IntrinsicElements {
+      'rapi-doc': React.DetailedHTMLProps<
+        React.HTMLAttributes<HTMLElement>,
+        HTMLElement
+      > & {


Global type declarations should be moved to a dedicated types file (e.g., types/rapidoc.d.ts) rather than being declared inline in component files for better maintainability and reusability.

Copilot · 2025-09-23T14:20:48Z

apps/nextjs-website/src/components/molecules/CardsGrid/CardsGrid.tsx

+                    xs: (cardSize?.xs as any) || 12,
+                    md: (cardSize?.md as any) || 6,


Using as any type assertion should be avoided. Consider properly typing the cardSize object or using a type guard to ensure type safety.

Suggested change

xs: (cardSize?.xs as any) || 12,

md: (cardSize?.md as any) || 6,

xs: cardSize?.xs ?? 12,

md: cardSize?.md ?? 6,

Or maybe better:

Suggested change

xs: (cardSize?.xs as any) || 12,

md: (cardSize?.md as any) || 6,

xs: cardSize?.xs || 12,

md: cardSize?.md || 6,

apps/nextjs-website/src/components/molecules/PartRendererMenu/PartRendererMenu.tsx

github-actions · 2025-10-08T02:59:48Z

This pull request is stale because it has been open for 14 days with no activity. If the pull request is still valid, please update it within 21 days to keep it open or merge it, otherwise it will be closed automatically.

MarBert and others added 14 commits September 3, 2025 12:58

add rapidoc and base component

47acca5

update style

29362be

add focused

f1ba8df

add changeset

d02ed6b

Merge branch 'main' into DEV-2699-test-rapidoc

f50021b

fixes to style

297c0f9

Update .changeset/thick-spoons-double.md

37f18ee

Co-authored-by: marcobottaro <[email protected]>

update package-lock

30212f9

Merge branch 'main' into DEV-2699-test-rapidoc

b56aa21

Merge branch 'main' into DEV-2699-test-rapidoc

f2fe415

update

8a1ed5e

Merge remote-tracking branch 'origin/DEV-2699-test-rapidoc' into upgr…

e1421d9

…ade-nextjs-15-react-19

migration

0f79472

basically updated every file of the project because eslint needed to …

5f1b09e

…be updated

tommaso1 requested review from a team, MarcoPonchia and marcobottaro as code owners September 16, 2025 18:15

github-actions bot added changeset cognito-functions packages website size/large labels Sep 16, 2025

tommaso1 temporarily deployed to dev September 16, 2025 18:19 — with GitHub Actions Inactive

tommaso1 temporarily deployed to prod September 16, 2025 18:19 — with GitHub Actions Inactive

tommaso1 temporarily deployed to uat September 16, 2025 18:19 — with GitHub Actions Inactive

fix linting

728cc5a

tommaso1 temporarily deployed to prod September 17, 2025 13:53 — with GitHub Actions Inactive

tommaso1 temporarily deployed to uat September 17, 2025 13:53 — with GitHub Actions Inactive

tommaso1 temporarily deployed to dev September 17, 2025 13:53 — with GitHub Actions Inactive

commas

690436f

tommaso1 temporarily deployed to dev September 17, 2025 14:15 — with GitHub Actions Inactive

tommaso1 temporarily deployed to prod September 17, 2025 14:15 — with GitHub Actions Inactive

tommaso1 temporarily deployed to uat September 17, 2025 14:15 — with GitHub Actions Inactive

commas

f778113

tommaso1 temporarily deployed to dev September 17, 2025 14:29 — with GitHub Actions Inactive

tommaso1 temporarily deployed to uat September 17, 2025 14:29 — with GitHub Actions Inactive

tommaso1 temporarily deployed to prod September 17, 2025 14:29 — with GitHub Actions Inactive

removed coulple any

82af7c8

tommaso1 temporarily deployed to uat September 17, 2025 15:10 — with GitHub Actions Inactive

tommaso1 temporarily deployed to dev September 17, 2025 15:10 — with GitHub Actions Inactive

tommaso1 temporarily deployed to prod September 17, 2025 15:10 — with GitHub Actions Inactive

Sebastiano-Bertolin assigned tommaso1 Sep 23, 2025

marcobottaro requested a review from Copilot September 23, 2025 14:19

Copilot AI reviewed Sep 23, 2025

View reviewed changes

Sebastiano-Bertolin mentioned this pull request Sep 23, 2025

[DEV-2699] Add rapidoc as api viewer #1668

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Sebastiano-Bertolin approved these changes Sep 23, 2025

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	tags?.some((tag: any) => tag === emojiName)
	tags?.some((tag: string) => tag === emojiName)

		xs: (cardSize?.xs as any) \|\| 12,
		md: (cardSize?.md as any) \|\| 6,

[DEV-2561] upgrade to nextjs 15 react 19 #1691

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tommaso1 commented Sep 16, 2025

List of Changes

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

Checklist:

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