Use a temp directory to install the compat test fixtures

This is a way to run `npm install` on the compat test fixtures without the node_modules at the root of the repo interfering with the node's module resolution (and that of parcel/webpack/etc).

It's hacky because ideally we'd just put each test in its own docker container for simplicity. We tried that in the private repo, but the complexity is not worth the benefit.

compat-tests/fixtures/cra/package/package.json

@@ -29,17 +29,10 @@
     "web-vitals": "^1.0.1"
   },
   "eslintConfig": {
-    "extends": [
-      "react-app",
-      "react-app/jest"
-    ]
+    "extends": ["react-app", "react-app/jest"]
   },
   "browserslist": {
-    "production": [
-      ">0.2%",
-      "not dead",
-      "not op_mini all"
-    ],
+    "production": [">0.2%", "not dead", "not op_mini all"],
     "development": [
       "last 1 chrome version",
       "last 1 firefox version",

compat-tests/fixtures/next-latest/package/next-env.d.ts

@@ -1,5 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
+/// <reference types="next/navigation-types/compat/navigation" />
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/basic-features/typescript for more information.

compat-tests/fixtures/next-latest/package/tsconfig.json

@@ -17,12 +17,19 @@
     "moduleResolution": "node",
     "resolveJsonModule": true,
     "isolatedModules": true,
-    "jsx": "preserve"
+    "jsx": "preserve",
+    "plugins": [
+      {
+        "name": "next"
+      }
+    ],
+    "strictNullChecks": true
   },
   "include": [
     "next-env.d.ts",
     "**/*.ts",
-    "**/*.tsx"
+    "**/*.tsx",
+    ".next/types/**/*.ts"
   ],
   "exclude": [
     "node_modules"

compat-tests/fixtures/react18/package/package.json

@@ -11,12 +11,9 @@
     "@theatre/core": "0.0.1-COMPAT.1",
     "@theatre/r3f": "0.0.1-COMPAT.1",
     "@theatre/studio": "0.0.1-COMPAT.1",
-    "parcel": "^2.5.0",
+    "parcel": "^2.9.3",
     "react": "^18.1.0",
     "react-dom": "^18.1.0",
     "serve": "14.2.0"
-  },
-  "devDependencies": {
-    "buffer": "^5.7.1"
   }
 }