Creating multiple app instances causes spec read to be empty #81 (#82)

* add type definitions

* add types

* fix spec loader

* increment version

Author: cdimascio

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "express-openapi-validator",
-  "version": "2.8.0",
+  "version": "2.8.1",
   "description": "Automatically validate API requests using an OpenAPI 3 and Express.",
   "main": "dist/index.js",
   "scripts": {

package.json

@@ -28,12 +28,7 @@ export function loadSpecFile(filePath) {
   if (typeof filePath === 'string') {
     const absolutePath = path.resolve(process.cwd(), filePath);
     if (fs.existsSync(absolutePath)) {
-      try {
-        // json or module
-        return require(absolutePath);
-      } catch (e) {
-        return fs.readFileSync(absolutePath, 'utf8');
-      }
+      return fs.readFileSync(absolutePath, 'utf8');
     }
   }
   return null;