chore: test suite

jest.config.js

@@ -0,0 +1,22 @@
+/** @type {import('ts-jest').JestConfigWithTsJest} */
+export default {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+  testMatch: ['**/*.test.ts'],
+  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx'],
+  transform: {
+    '^.+\\.tsx?$': [
+      'ts-jest',
+      {
+        tsconfig: {
+          target: 'ES2020',
+          module: 'ESNext',
+          moduleResolution: 'node',
+          esModuleInterop: true,
+          strict: true,
+          skipLibCheck: true
+        }
+      }
+    ]
+  }
+};

package.json

@@ -19,7 +19,8 @@
     "preview": "rsbuild preview",
     "cli:dev": "tsc -p tsconfig.cli.json --watch",
     "cli:build": "tsc -p tsconfig.cli.json",
-    "ttrpg": "node --loader ts-node/esm ./src/cli/index.ts"
+    "ttrpg": "node --loader ts-node/esm ./src/cli/index.ts",
+    "test": "jest"
   },
   "keywords": [
     "ttrpg",
@@ -50,9 +51,13 @@
     "@tailwindcss/postcss": "^4.2.1",
     "@tailwindcss/typography": "^0.5.15",
     "@tailwindcss/vite": "^4.0.0",
+    "@types/jest": "^30.0.0",
     "@types/js-yaml": "^4.0.9",
     "@types/node": "^22.19.13",
+    "jest": "^29.7.0",
+    "jest-environment-jsdom": "^29.7.0",
     "tailwindcss": "^4.0.0",
+    "ts-jest": "^29.4.6",
     "ts-node": "^10.9.2",
     "typescript": "^5.7.2"
   }