🔧 Configures Jest

jest.config.js

@@ -0,0 +1,6 @@
+module.exports = {
+  transform: {'^.+\\.ts?$': 'ts-jest'},
+  testEnvironment: 'node',
+  testRegex: '/tests/.*\\.(test|spec)?\\.(ts|tsx)$',
+  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node']
+};

package.json

@@ -7,7 +7,7 @@
   ],
   "main": "lib/index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 0",
+    "test": "jest",
     "build.cpygrammars": "cpy proleap-vb6/src/main/antlr4/io/proleap/vb6/*.g4 ./antlr4ts_out/",
     "build.antlr4ts": "antlr4ts -visitor antlr4ts_out/*.g4",
     "postbuild.antlr4ts": "rimraf antlr4ts_out/*.g4",

tsconfig.json

@@ -8,5 +8,5 @@
     "esModuleInterop": true
   },
   "include": ["index.ts", "antlr4ts_out"],
-  "exclude": ["node_modules", "proleap-vb6", "**/__tests__/*"]
+  "exclude": ["node_modules", "proleap-vb6", "tests/**"]
 }