Vitest migration (#709)

* test: add vitest prep (#707)

Adds vitest and associated scripts which will not succeed yet, as we
have no projects.

* fix: move to using a root vitest config (#713)

We were quickly going to end up with too many sub-configs, and all sorts
of problems with extending the various configs.

This switches to a single root config which globs each of the monorepo
packages instead.

* test: migrate preact/utils to vitest (#715)

* test: migrate preact/utils to vitest

This also adds `preact/utils` to the pnpm workspace so it can be
resolved properly via `@preact/signals-utils`.

* chore: revert workspace change

* fix: downgrade to vite 6 and revert the revert

* test: migrate signals package to vitest (#710)

Migrates the signals package to use vitest browser tests.

* test: migrate core tests to vitest (#708)

Migrates the core package to use vitest.

* test: migrate react tests to vitest (#716)

* test: migrate react tests to vitest

* test: migrate react-transform to vitest

* chore: remove mocha/sinon/chai/karma

* fix: add exact import

* fix: strongly type mocked components

* test: add the sketchy transform back

* fix: funky runtime path

* fix: resolve signals after runtime

* test: map things to places

* test: use vitest aliases

THIS MAY ACTUALLY WORK!

* chore: use react 16 in runtime too

* test: use correct vitest coverage globs (#779)

* chore: remove unused karma config

* test: correct coverage globs

* Fix some stragglers

* Move to browser

* test: de-dupe dependencies & use CDP GC (#786)

* chore: de-dupe babel dependencies

In the lockfile, we ended up with two versions of babel. This is
basically de-duping and dropping one of them.

* fix: use vitest assertions

* fix: dedupe vite

* test: use cdp to force garbage collection

---------

Co-authored-by: James Garbutt <43081j@users.noreply.github.com>

Author: JoviDeCroock

.github/workflows/main.yml

@@ -46,6 +46,11 @@ jobs:
       - name: Test react production build
         run: pnpm test:prod
 
+      - name: Prepare runtime with React 16
+        working-directory: packages/react/runtime
+        run: |
+          pnpm i react@16 react-dom@16 react-router-dom@5
+
       - name: Test React 16
         working-directory: packages/react
         run: |

extension/package.json

@@ -20,7 +20,7 @@
     "@preact/preset-vite": "^2.3.0",
     "@types/chrome": "^0.0.270",
     "typescript": "^5.8.3",
-    "vite": "^7.0.0",
+    "vite": "^6.3.5",
     "web-ext": "^7.0.0"
   },
   "keywords": [