improvement: now compiling TypeScript on yarn test

This should prevent type errors from slipping in.

Author: MrHus

examples/with-typescript/package.json

@@ -10,7 +10,8 @@
     "pretest": "relative-deps",
     "start": "react-scripts start",
     "build": "react-scripts build",
-    "test": "react-scripts test",
+    "test": "react-scripts test && test:typescript",
+    "test:typescript": "tsc --version && tsc --noEmit",
     "now-build": "SKIP_PREFLIGHT_CHECK=true react-scripts build"
   },
   "dependencies": {

package.json

@@ -26,8 +26,9 @@
     "test:compat": "yarn test:backwards && yarn test:forwards && yarn test:latest",
     "test:examples": "CI=1 lerna run --scope '*-example' test -- --passWithNoTests --watchAll=false",
     "test:chromatic": "chromatic --app-code iiua39bmt0j --build-script-name build:storybook --exit-zero-on-changes",
+    "test:typescript": "tsc --version && tsc --noEmit --project packages/react-async",
     "resolutions:fix-react": "jq '.resolutions.react = .devDependencies.react|.resolutions.\"react-dom\"=.devDependencies.react' package.json > package.json.new && mv package.json.new package.json && yarn install",
-    "ci": "yarn lint && yarn test:compat && yarn test:examples",
+    "ci": "yarn lint && yarn test:typescript && yarn test && yarn test:compat && yarn test:examples",
     "build:packages": "lerna run --scope 'react-async*' build",
     "build:examples": "lerna run --scope '*-example' build",
     "build:storybook": "build-storybook -o storybook",