Init container

packages/core/strapi/lib/Strapi.js

@@ -8,6 +8,7 @@ const { Database } = require('@strapi/database');
 
 const loadConfiguration = require('./core/app-configuration');
 const { createHTTPServer } = require('./server');
+const { createContainer } = require('./container');
 const loadModules = require('./core/load-modules');
 const utils = require('./utils');
 const bootstrap = require('./core/bootstrap');
@@ -32,6 +33,8 @@ const LIFECYCLES = {
 
 class Strapi {
   constructor(opts = {}) {
+    this.container = createContainer(this);
+
     this.dir = opts.dir || process.cwd();
     this.config = loadConfiguration(this.dir, opts);
 

packages/core/strapi/lib/container.js

@@ -0,0 +1,45 @@
+'use strict';
+
+const createContainer = strapi => {
+  const registerd = new Map();
+  const resolved = new Map();
+
+  return {
+    register(name, resolver) {
+      if (registerd.has(name)) {
+        throw new Error(`Cannot register already registered service ${name}`);
+      }
+
+      registerd.set(name, resolver);
+      return this;
+    },
+
+    get(name, args) {
+      // TODO: handle singleton vs reinstanciation everytime
+      if (resolved.has(name)) {
+        return resolved.get(name);
+      }
+
+      if (registerd.has(name)) {
+        const resolver = registerd.get(name);
+
+        if (typeof resolver === 'function') {
+          resolved.set(name, resolver({ strapi }, args));
+        } else {
+          resolved.set(name, resolver);
+        }
+
+        return resolved.get(name);
+      }
+
+      throw new Error(`Could not resovle service ${name}`);
+    },
+
+    // TODO: implement
+    extend() {},
+  };
+};
+
+module.exports = {
+  createContainer,
+};