feat: enable react compiler in design-toolkit

[orteth01]

enabled react compiler according to tsdown docs: https://tsdown.dev/recipes/react-support#enabling-react-compiler
build time for dtk seems to have increased. from my few tests, ~3s -> ~4.5s. other than that, things seem to be working as they were.

no src code was modified as part of this PR, but going forward we can likely remove manual optimizations that we were doing previously

TODO:

• populate the nextjs app with the rest of the component variations to ensure no accidental breakage

[vercel]

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Project	Deployment	Review	Updated (UTC)
design-toolkit	Ready	Preview, Comment	Dec 18, 2025 6:13pm
map-toolkit	Ready	Preview, Comment	Dec 18, 2025 6:13pm

[orteth01]

this was used w/ tsup to add 'use client'; back. we no longer need to do that w/ tsdown and no longer need this dep as a result

[github-actions]

🧠 Memory Leak Test Results

Status: ✅ All tests passed

Component	Leaks	Retained Size	Status
accordion-group	0	0 B	✅
accordion	0	0 B	✅
actionbar	0	0 B	✅
avatar	5	112.44 KB	✅
badge	0	0 B	✅
button	0	0 B	✅
dialog	0	0 B	✅
drawer	0	0 B	✅
intentional-leak	0	0 B	✅
notice	0	0 B	✅
tooltip	2	44.81 KB	✅

📋 Test Details

• Components tested: 11
• Total leaks detected: 7
• Workflow run: View details

---

_{🤖 Generated by MemLab + Playwright}

[github-actions]

📊 Coverage Reports

Coverage Changes by Package

Click to expand 29 package details

apps/next (No diff)

packages/bus (No diff)

packages/constants (No diff)

packages/converters (No diff)

packages/core (No diff)

packages/dataset (No diff)

packages/design-foundation (No diff)

packages/design-toolkit (No diff)

packages/formatters (No diff)

packages/geo (No diff)

packages/hotkey-manager (No diff)

packages/icons (No diff)

packages/logger (No diff)

packages/map-toolkit (No diff)

packages/math (No diff)

packages/ntds (No diff)

packages/postcss-tailwind-css-modules (No diff)

packages/predicates (No diff)

packages/temporal (No diff)

packages/web-worker (No diff)

packages/websocket (No diff)

tooling/biome-config (No diff)

tooling/constellation-tracker (No diff)

tooling/eslint-config (No diff)

tooling/prettier-config (No diff)

tooling/smeegl (No diff)

tooling/turbo-filter (No diff)

tooling/typescript-config (No diff)

tooling/vitest-config (No diff)

_{Coverage data collected from all packages in the monorepo.}

[brandonjpierce]

Confirming this is working:

[brandonjpierce]

Relevant https://acusti.ca/blog/2025/12/16/react-compiler-silent-failures-and-how-to-fix-them/

[colehart]

is this MR ongoing? Hasn't been touched in a month.

[orteth01]

is this MR ongoing? Hasn't been touched in a month.

https://gov.teams.microsoft.us/l/message/19:gcch:49ba58dc77944f2ca1f9063c2aa3bb0f@thread.v2/1766094245177?context=%7B%22contextType%22%3A%22chat%22%7D

tl;dr: yes, still something we want to do. this was side quest/experiment. maybe a more formal 'unassigned' ticket that someone could pick up would help w/ progress on this.

[orteth01]

@colehart thank you for the bump on this! i created a ticket in the core backlog: https://gohypergiant.atlassian.net/browse/PATH-1318.

[switzerb]

yeah this is waiting for the VRT tests to be in place. we can potentially close and reopen, but it's still active work one way or the other.