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-core-utils/.eslintrc

@@ -0,0 +1,9 @@
+{
+  "plugins": ["prettier"],
+  "extends": ["prettier"],
+  "rules": {
+    "prettier/prettier": "error",
+    "semi": "error",
+    "no-unused-expressions": "true"
+  }
+}

packages/medusa-core-utils/.prettierrc

@@ -0,0 +1,7 @@
+{
+  "endOfLine": "lf",
+  "semi": false,
+  "singleQuote": false,
+  "tabWidth": 2,
+  "trailingComma": "es5"
+}

packages/medusa-core-utils/package.json

@@ -19,11 +19,14 @@
     "@babel/cli": "^7.7.5",
     "@babel/core": "^7.7.5",
     "@babel/plugin-proposal-class-properties": "^7.7.4",
+    "@babel/plugin-transform-classes": "^7.9.5",
     "@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",
-    "eslint": "^6.8.0"
+    "prettier": "^1.19.1"
   },
   "dependencies": {
     "@hapi/joi": "^16.1.8",

packages/medusa-core-utils/src/create-require-from-path.js

@@ -0,0 +1,18 @@
+import Module from "module"
+import path from "path"
+
+const fallback = filename => {
+  const mod = new Module(filename)
+
+  mod.filename = filename
+  mod.paths = Module._nodeModulePaths(path.dirname(filename))
+  mod._compile(`module.exports = require;`, filename)
+
+  return mod.exports
+}
+
+// Polyfill Node's `Module.createRequireFromPath` if not present (added in Node v10.12.0)
+const createRequireFromPath =
+  Module.createRequire || Module.createRequireFromPath || fallback
+
+export default createRequireFromPath

packages/medusa-core-utils/src/get-config-file.js

@@ -0,0 +1,23 @@
+import path from "path"
+
+/**
+ * Attempts to resolve the config file in a given root directory.
+ * @param {string} rootDir - the directory to find the config file in.
+ * @param {string} configName - the name of the config file.
+ * @return {object} an object containing the config module and its path.
+ */
+function getConfigFile(rootDir, configName) {
+  const configPath = path.join(rootDir, configName)
+  let configFilePath = ``
+  let configModule
+  try {
+    configFilePath = require.resolve(configPath)
+    configModule = require(configFilePath)
+  } catch (err) {
+    return {}
+  }
+
+  return { configModule, configFilePath }
+}
+
+export default getConfigFile

packages/medusa-core-utils/src/index.js

@@ -1,2 +1,4 @@
 export { default as Validator } from "./validator"
 export { default as MedusaError } from "./errors"
+export { default as getConfigFile } from "./get-config-file"
+export { default as createRequireFromPath } from "./create-require-from-path"

packages/medusa-core-utils/yarn.lock

@@ -559,6 +559,20 @@
     "@babel/helper-split-export-declaration" "^7.8.3"
     globals "^11.1.0"
 
+"@babel/plugin-transform-classes@^7.9.5":
+  version "7.9.5"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-classes/-/plugin-transform-classes-7.9.5.tgz#800597ddb8aefc2c293ed27459c1fcc935a26c2c"
+  integrity sha512-x2kZoIuLC//O5iA7PEvecB105o7TLzZo8ofBVhP79N+DO3jaX+KYfww9TQcfBEZD0nikNyYcGB1IKtRq36rdmg==
+  dependencies:
+    "@babel/helper-annotate-as-pure" "^7.8.3"
+    "@babel/helper-define-map" "^7.8.3"
+    "@babel/helper-function-name" "^7.9.5"
+    "@babel/helper-optimise-call-expression" "^7.8.3"
+    "@babel/helper-plugin-utils" "^7.8.3"
+    "@babel/helper-replace-supers" "^7.8.6"
+    "@babel/helper-split-export-declaration" "^7.8.3"
+    globals "^11.1.0"
+
 "@babel/plugin-transform-computed-properties@^7.8.3":
   version "7.8.3"
   resolved "https://registry.yarnpkg.com/@babel/plugin-transform-computed-properties/-/plugin-transform-computed-properties-7.8.3.tgz#96d0d28b7f7ce4eb5b120bb2e0e943343c86f81b"
@@ -880,7 +894,7 @@
     globals "^11.1.0"
     lodash "^4.17.13"
 
-"@babel/types@^7.0.0", "@babel/types@^7.3.0", "@babel/types@^7.3.3", "@babel/types@^7.8.6", "@babel/types@^7.9.0", "@babel/types@^7.9.5", "@babel/types@^7.9.6":
+"@babel/types@^7.0.0", "@babel/types@^7.3.0", "@babel/types@^7.3.3", "@babel/types@^7.9.0", "@babel/types@^7.9.6":
   version "7.9.6"
   resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.9.6.tgz#2c5502b427251e9de1bd2dff95add646d95cc9f7"
   integrity sha512-qxXzvBO//jO9ZnoasKF1uJzHd2+M6Q2ZPIVfnFps8JJvXy0ZBbwbNOmE6SGIY5XOY6d1Bo5lb9d9RJ8nv3WSeA==
@@ -898,6 +912,15 @@
     lodash "^4.17.13"
     to-fast-properties "^2.0.0"
 
+"@babel/types@^7.8.6", "@babel/types@^7.9.5":
+  version "7.9.5"
+  resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.9.5.tgz#89231f82915a8a566a703b3b20133f73da6b9444"
+  integrity sha512-XjnvNqenk818r5zMaba+sLQjnbda31UfUURv3ei0qPQw4u+j2jMyJ5b11y8ZHYTRSI3NnInQkkkRT4fLqqPdHg==
+  dependencies:
+    "@babel/helper-validator-identifier" "^7.9.5"
+    lodash "^4.17.13"
+    to-fast-properties "^2.0.0"
+
 "@bcoe/v8-coverage@^0.2.3":
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/@bcoe/v8-coverage/-/v8-coverage-0.2.3.tgz#75a2e8b51cb758a7553d6804a5932d7aace75c39"
@@ -3849,6 +3872,11 @@ prelude-ls@~1.1.2:
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
   integrity sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=
 
+prettier@^1.19.1:
+  version "1.19.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.19.1.tgz#f7d7f5ff8a9cd872a7be4ca142095956a60797cb"
+  integrity sha512-s7PoyDv/II1ObgQunCbB9PdLmUcBZcnWOcxDh7O0N/UwDEsHyqkW+Qh28jW+mVuCdx7gLB0BotYI1Y6uI9iyew==
+
 pretty-format@^25.5.0:
   version "25.5.0"
   resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-25.5.0.tgz#7873c1d774f682c34b8d48b6743a2bf2ac55791a"