Adds Middleware API (#40)

* Adds test project

* Adds e2e for end-2-end tests

* Update gitignore

* Update loaders

* Creates test project

* v0.1.27

* Upgrade

* dependency fixes

* Load project plugins in the plugin loader

* Issue with instanceof

* Fixes versioning issues

* Adds medusa middleware api

* Adds documentation

* Fixes tests

packages/medusa-interfaces/.babelrc

@@ -1,5 +1,8 @@
 {
-  "plugins": ["@babel/plugin-proposal-class-properties"],
+  "plugins": [
+    "@babel/plugin-proposal-class-properties",
+    "@babel/plugin-transform-instanceof"
+  ],
   "presets": ["@babel/preset-env"],
   "env": {
     "test": {

packages/medusa-interfaces/package.json

@@ -19,15 +19,19 @@
   "devDependencies": {
     "@babel/cli": "^7.7.5",
     "@babel/core": "^7.7.5",
+    "@babel/plugin-transform-classes": "^7.9.5",
     "@babel/plugin-proposal-class-properties": "^7.7.4",
+    "@babel/plugin-transform-instanceof": "^7.8.3",
     "@babel/plugin-transform-runtime": "^7.7.6",
     "@babel/preset-env": "^7.7.5",
+    "@babel/runtime": "^7.9.6",
     "cross-env": "^5.2.1",
     "eslint": "^6.8.0",
     "jest": "^25.5.2",
     "prettier": "^1.19.1"
   },
   "dependencies": {
+    "medusa-core-utils": "^0.3.0",
     "mongoose": "^5.8.0"
   },
   "gitHead": "35e0930650d5f4aedf2610749cd131ae8b7e17cc"