fix

things/npm/install-npm.sh

@@ -8,6 +8,9 @@ npm install --save-dev \
 	'eslint@^7.30.0' \
 	'eslint-config-prettier@^8.3.0' \
 	'eslint-plugin-prettier@^3.4.0' \
-	prettier
+	prettier \
+	jest \
+	@types/jest \
+	ts-jest
 
 mkdir tests || true

things/npm/tsconfig.json

@@ -14,6 +14,7 @@
 	"include": [
 		"*.ts",
 		"src/**/*.ts",
-		"test/**/*.ts"
+		"test/**/*.ts",
+		"tests/**/*.ts"
 	]
 }