diff --git a/libs/remix-lib/test/eventManager.js b/libs/remix-lib/test/eventManager.ts
similarity index 100%
rename from libs/remix-lib/test/eventManager.js
rename to libs/remix-lib/test/eventManager.ts
diff --git a/libs/remix-lib/test/init.js b/libs/remix-lib/test/init.ts
similarity index 100%
rename from libs/remix-lib/test/init.js
rename to libs/remix-lib/test/init.ts
diff --git a/libs/remix-lib/test/tests.js b/libs/remix-lib/test/tests.ts
similarity index 100%
rename from libs/remix-lib/test/tests.js
rename to libs/remix-lib/test/tests.ts
diff --git a/libs/remix-lib/test/txFormat.js b/libs/remix-lib/test/txFormat.ts
similarity index 99%
rename from libs/remix-lib/test/txFormat.js
rename to libs/remix-lib/test/txFormat.ts
index 9d897d53f4..b29ea2075d 100644
--- a/libs/remix-lib/test/txFormat.js
+++ b/libs/remix-lib/test/txFormat.ts
@@ -1,5 +1,5 @@
 'use strict'
-const tape = require('tape')
+import * as tape from 'tape'
 const txFormat = require('../src/execution/txFormat')
 const txHelper = require('../src/execution/txHelper')
 const util = require('../src/util')
diff --git a/libs/remix-lib/test/txHelper.js b/libs/remix-lib/test/txHelper.ts
similarity index 100%
rename from libs/remix-lib/test/txHelper.js
rename to libs/remix-lib/test/txHelper.ts
diff --git a/libs/remix-lib/test/txResultHelper.js b/libs/remix-lib/test/txResultHelper.ts
similarity index 100%
rename from libs/remix-lib/test/txResultHelper.js
rename to libs/remix-lib/test/txResultHelper.ts
diff --git a/libs/remix-lib/test/util.js b/libs/remix-lib/test/util.ts
similarity index 100%
rename from libs/remix-lib/test/util.js
rename to libs/remix-lib/test/util.ts
diff --git a/libs/remix-lib/tsconfig.lib.json b/libs/remix-lib/tsconfig.lib.json
index cec3d2b80c..ab14ec304e 100644
--- a/libs/remix-lib/tsconfig.lib.json
+++ b/libs/remix-lib/tsconfig.lib.json
@@ -8,7 +8,10 @@
       "rootDir": "./",
       "types": ["node"]
     },
-    "exclude": ["**/*.spec.js"],
+    "exclude": [
+      "**/*.spec.js",
+      "test/"
+    ],
     "include": [
       "src/**/*.js",
       "./index.js"