diff --git a/jest.config.js b/jest.config.js
index 563d4cc..89d4aa5 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -5,7 +5,9 @@ module.exports = {
   testMatch: ['**/*.test.ts'],
   testRunner: 'jest-circus/runner',
   transform: {
-    '^.+\\.ts$': 'ts-jest'
+    '^.+\\.ts$': 'ts-jest',
+    '^.+\\.js$': 'ts-jest'
   },
+  transformIgnorePatterns: ["node_modules/(?!unified)/"],
   verbose: true
-}
\ No newline at end of file
+}
diff --git a/tsconfig.json b/tsconfig.json
index bf04706..2ee471b 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,5 +1,6 @@
 {
   "compilerOptions": {
+    "allowJs": true,
     "target": "es6",
     "module": "commonjs",
     "strict": true,