add typecheck as npm cmd, pre-commit hook and ci check

Author: lukasvice

.githooks/pre-commit

@@ -4,3 +4,4 @@ set -e
 set -o pipefail
 
 npm run lint
+npm run typecheck

.github/workflows/test.yml

@@ -11,4 +11,5 @@ jobs:
           registry-url: 'https://registry.npmjs.org'
       - run: npm install
       - run: npm run lint
+      - run: npm run typecheck
       - run: npm run test

package.json

@@ -11,6 +11,7 @@
     "build:esm": "tsc --project tsconfig.esnext.json",
     "lint": "eslint --ext js,ts,tsx src",
     "lint:fix": "npm run lint -- --fix",
+    "typecheck": "tsc --noEmit",
     "test": "jest --verbose --passWithNoTests",
     "prepare": "npm run build",
     "prepublishOnly": "npm run test && npm run lint",