feat(local-explorer-ui): Added initial data studio plumbing by NuroDev · Pull Request #12518 · cloudflare/workers-sdk

NuroDev · 2026-02-10T18:26:16Z

The first of many PRs towards fixing DEVX-2415.

Changes

Implements the core (data) driver support.
- The base is ported from outerbase/studio and the internal dashboard fork for D1 SQLite support only
- Cleaned up a lot of code's linting errors to appease our workspace linting config
- Applied a lot of type tweaks / fixes to appease reduce the type errors to 0
- Added / improved JSDoc comments when possible to try and better document the code being added
Added lodash dependency (+types)
Added D1 database listing to the sidebar
- Also includes some refactoring to make error handling more granular (setKVError + setD1Error instead of just setError)
Added the initial placeholder routes for where to add the data studio in a later PR.
Fixed a number of Tailwind CSS linting warnings (EG: min-h-[67px] replaced with min-h-16.75)

Tests
- Tests included/updated
- Automated tests not possible - manual testing has been completed as follows:
- Additional testing not necessary because:
Public documentation
- Cloudflare docs PR(s):
- Documentation not necessary because: WIP Experimental feature

A picture of a cute animal (not mandatory, but encouraged)

changeset-bot · 2026-02-10T18:26:21Z

🦋 Changeset detected

Latest commit: d934801

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

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claude · 2026-02-10T18:29:36Z

Claude finished @NuroDev's task —— View job

Changeset Review

⚠️ Issues found

The changeset .changeset/chilly-pans-follow.md has the following issue:

Missing experimental feature opt-in instructions: According to the changeset guidelines, "If the change collects more analytics, it should be a minor even though there is no user-visible change" and "Changesets for experimental features should include note on how users can opt in."

While the changeset correctly mentions "This is an experimental WIP feature," it doesn't explain how users can actually use or access this feature. Since D1 databases now appear in the sidebar, users should know:

How to enable/access the local explorer
Any flags or configuration needed
That this is incomplete and more functionality is coming

Suggestion: Add a brief note about how to access the local explorer (e.g., what command to run, what flag to use) or clarify that this feature is automatically available but incomplete.

Everything else looks good:

✅ Version type: minor is correct for new functionality
✅ Changelog quality: Clear description with good context
✅ No h1/h2/h3 headers
✅ Not analytics-related
✅ Package is correct: @cloudflare/local-explorer-ui

Screenshot Review: This is the Local Explorer UI showing the new D1 databases sidebar. The interface looks clean and organized with KV namespaces and D1 databases properly separated. No cute animals detected, but the database icons are giving strong organized-container vibes. 📦/10

pkg-pr-new · 2026-02-10T18:35:29Z

create-cloudflare

npm i https://pkg.pr.new/create-cloudflare@12518

@cloudflare/kv-asset-handler

npm i https://pkg.pr.new/@cloudflare/kv-asset-handler@12518

miniflare

npm i https://pkg.pr.new/miniflare@12518

@cloudflare/pages-shared

npm i https://pkg.pr.new/@cloudflare/pages-shared@12518

@cloudflare/unenv-preset

npm i https://pkg.pr.new/@cloudflare/unenv-preset@12518

@cloudflare/vite-plugin

npm i https://pkg.pr.new/@cloudflare/vite-plugin@12518

@cloudflare/vitest-pool-workers

npm i https://pkg.pr.new/@cloudflare/vitest-pool-workers@12518

@cloudflare/workers-editor-shared

npm i https://pkg.pr.new/@cloudflare/workers-editor-shared@12518

@cloudflare/workers-utils

npm i https://pkg.pr.new/@cloudflare/workers-utils@12518

wrangler

npm i https://pkg.pr.new/wrangler@12518

commit: d934801

devin-ai-integration

Devin Review found 5 potential issues.

View 9 additional findings in Devin Review.

packages/local-explorer-ui/src/drivers/sqlite/generate.ts

packages/local-explorer-ui/src/drivers/common.ts

packages/local-explorer-ui/src/components/studio/Explain/SQLiteExplainTab.tsx

packages/local-explorer-ui/src/drivers/sqlite/parsers.ts

devin-ai-integration

Devin Review found 2 new potential issues.

View 11 additional findings in Devin Review.

packages/local-explorer-ui/src/drivers/sqlite/generate.ts

packages/local-explorer-ui/src/drivers/sqlite/parsers.ts

devin-ai-integration

Devin Review found 1 new potential issue.

View 15 additional findings in Devin Review.

packages/local-explorer-ui/src/utils/studio/index.ts

…eses support Co-authored-by: devin-ai-integration[bot] <158243242+devin-ai-integration[bot]@users.noreply.github.com>

…/frameworks (#12482) Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Wrangler automated PR updater <wrangler@cloudflare.com>

Co-authored-by: James Opstad <13586373+jamesopstad@users.noreply.github.com>

emily-shen

the studio driver code is quite dense, would it be safe to assume its pretty much alright since it is being used in the outerbase studio and stratus? if there are any specific areas you modified i can have a closer look otherwise i'll assume its alright :)

packages/local-explorer-ui/src/components/studio/Explain/SQLiteExplainTab.tsx

packages/local-explorer-ui/src/drivers/sqlite/generate.ts

emily-shen · 2026-02-11T15:34:04Z

packages/local-explorer-ui/src/components/Sidebar.tsx

-	loading: boolean;
-	error: string | null;
 	currentPath: string;
+	d1Error: string | null;


should we have a single error banner? instead of making it resource specific.

i see the pr description says you made it more granular but i'm just wondering why

Yeah I thought about this as well. The only reason I made these errors unique is so if (for whatever reason) D1 databases fail to load but KV does, you can still access your local KV namespaces and not have the sidebar just set all items to render an error.

What about setting a single error, and returning an empty array for the problematic resource if there is an error?

packages/local-explorer-ui/src/components/Sidebar.tsx

packages/local-explorer-ui/src/routes/d1/$databaseId.tsx

devin-ai-integration

Devin Review found 1 new potential issue.

View 19 additional findings in Devin Review.

packages/local-explorer-ui/src/components/Breadcrumbs.tsx

packages/local-explorer-ui/src/routes/__root.tsx

emily-shen

approved, not crucial but the one outstanding comment is that i think it would be better to have a single unified error if we fail to fetch something in the sidebar

NuroDev added 6 commits February 10, 2026 17:35

Minor Tailwind CSS linting fixes

68487ef

Minor Tailwind CSS linting fixes

7f43d5c

Added initial D1 route plumbing

334acbe

Added lodash dependency

43a6b47

Added @types/lodash dev dependency

ae30d73

Add initial (D1) driver plumbing

c7deb47

NuroDev self-assigned this Feb 10, 2026

workers-devprod added this to workers-sdk Feb 10, 2026

github-project-automation bot moved this to Untriaged in workers-sdk Feb 10, 2026

NuroDev added 2 commits February 10, 2026 18:26

Merge branch 'main' into NuroDev/local-explorer-studio-plumbing

e1526b4

Added changeset

d3082c0

Merge branch 'main' into NuroDev/local-explorer-studio-plumbing

87bb21c

NuroDev and others added 12 commits February 10, 2026 20:47

Merge branch 'main' into NuroDev/local-explorer-studio-plumbing

c0bef86

Merge branch 'main' into NuroDev/local-explorer-studio-plumbing

50d44ec

Merge branch 'main' into NuroDev/local-explorer-studio-plumbing

93ac650

Removed placeholder driver logic from D1 database route

ca30e3f

Merge branch 'main' into NuroDev/local-explorer-studio-plumbing

fb7bbf7

Minor refactoring

22a69e6

Minor StudioSQLiteExplainTab refactoring

09133d9

Minor SQLite driver generator refactoring

f3187e7

Improve driver JSDoc's

39c88ec

Removed mysql dialect support

1e7e857

Minor refactoring / code cleanup

12138db

Added explicit returns to CursorV2

2e810b3

NuroDev marked this pull request as ready for review February 11, 2026 10:27

NuroDev requested a review from a team as a code owner February 11, 2026 10:27

devin-ai-integration bot reviewed Feb 11, 2026

View reviewed changes

NuroDev and others added 2 commits February 11, 2026 11:40

Added granular data fetching error handling

5e9789f

Merge branch 'main' into NuroDev/local-explorer-studio-plumbing

589b7bd

devin-ai-integration bot reviewed Feb 11, 2026

View reviewed changes

packages/local-explorer-ui/src/drivers/sqlite/generate.ts Show resolved Hide resolved

packages/local-explorer-ui/src/drivers/sqlite/parsers.ts Show resolved Hide resolved

NuroDev and others added 2 commits February 11, 2026 12:46

Merge branch 'main' into NuroDev/local-explorer-studio-plumbing

0f61c9c

Merge branch 'main' into NuroDev/local-explorer-studio-plumbing

31dd02b

devin-ai-integration bot reviewed Feb 11, 2026

View reviewed changes

packages/local-explorer-ui/src/utils/studio/index.ts Outdated Show resolved Hide resolved

NuroDev and others added 6 commits February 11, 2026 15:08

Fix TOKEN_IDENTIFIER & TOKEN_STRING_LITERAL regex pattern parenth…

3cd4e28

…eses support Co-authored-by: devin-ai-integration[bot] <158243242+devin-ai-integration[bot]@users.noreply.github.com>

fix(wrangler): don't proxy localhost requests during dev (#12516)

cbd2e8c

Co-authored-by: James Opstad <13586373+jamesopstad@users.noreply.github.com>

[wrangler] Use project's package manager in wrangler setup (#12437)

9378280

Skip TurboRepo running builds in Vite playground packages (#12450)

17fdca7

Merge branch 'main' into NuroDev/local-explorer-studio-plumbing

ac29fe9

emily-shen reviewed Feb 11, 2026

View reviewed changes

NuroDev added 2 commits February 12, 2026 11:38

Refactored sidebar to have re-usable item group component

23656ba

Refactored to use a unified breadcrumb component

1bafa14

devin-ai-integration bot reviewed Feb 12, 2026

View reviewed changes

packages/local-explorer-ui/src/components/Breadcrumbs.tsx Show resolved Hide resolved

NuroDev and others added 6 commits February 12, 2026 14:31

Added basic unit tests for SQLite driver + utils

82536b7

Fixed React fragment missing key

a82a064

Replaced lodash with inline forks

b516b8d

Merge branch 'main' into NuroDev/local-explorer-studio-plumbing

fa79a07

Improved changeset description

690d78a

Merge branch 'main' into NuroDev/local-explorer-studio-plumbing

bcb4087

emily-shen reviewed Feb 12, 2026

View reviewed changes

packages/local-explorer-ui/src/routes/__root.tsx Outdated Show resolved Hide resolved

Replaced String(...) with JSON.stringify(...)

d934801

emily-shen approved these changes Feb 12, 2026

View reviewed changes

github-project-automation bot moved this from Untriaged to Approved in workers-sdk Feb 12, 2026

NuroDev merged commit 323f14e into main Feb 12, 2026
36 checks passed

NuroDev deleted the NuroDev/local-explorer-studio-plumbing branch February 12, 2026 16:36

github-project-automation bot moved this from Approved to Done in workers-sdk Feb 12, 2026

workers-devprod mentioned this pull request Feb 12, 2026

Version Packages #12547

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NuroDev commented Feb 10, 2026 •

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