fix: allow transformation of typescript files in node_modules

.travis.yml

@@ -40,6 +40,7 @@ script:
     else
       npm run test -- --runInBand;
     fi
+  - npm run test:monorepo
 
 after_success:
   # report coverages to coveralls

e2e/__monorepos__/simple/dependency/imported-module.ts

@@ -0,0 +1 @@
+export const A = 1.0

e2e/__monorepos__/simple/dependency/index.ts

@@ -0,0 +1,3 @@
+import { A } from './imported-module'
+
+export default A

e2e/__monorepos__/simple/dependency/package.json

@@ -0,0 +1,8 @@
+{
+  "name": "dependency",
+  "version": "0.0.1",
+  "peerDependencies": {
+    "typescript": "^3.7.5"
+  },
+  "main": "./index.ts"
+}

e2e/__monorepos__/simple/dependency/tsconfig.json

@@ -0,0 +1,21 @@
+{
+  "compilerOptions": {
+    "target": "es5",
+    "module": "commonjs",
+    "lib": [
+      "esnext"
+    ],
+    "allowJs": true,
+    "declaration": true,
+    "sourceMap": true,
+    "declarationDir": "./lib",
+    "outDir": "./lib",
+    "downlevelIteration": true,
+    "strict": true,
+    "moduleResolution": "node",
+    "esModuleInterop": true
+  },
+  "include": [
+    "./src"
+  ]
+}

e2e/__monorepos__/simple/with-dependency/index.ts

@@ -0,0 +1,3 @@
+import A from 'dependency'
+
+export const fn = () => A