Install reflect-metadataa and tsyringe

package-lock.json

@@ -9031,6 +9031,12 @@
         "is-promise": "^2.1.0"
       }
     },
+    "reflect-metadata": {
+      "version": "0.1.13",
+      "resolved": "https://registry.npmjs.org/reflect-metadata/-/reflect-metadata-0.1.13.tgz",
+      "integrity": "sha512-Ts1Y/anZELhSsjMcU605fU9RE4Oi3p5ORujwbIKXfWa+0Zxs510Qrmrce5/Jowq3cHSZSJqBjypxmHarc+vEWg==",
+      "dev": true
+    },
     "regenerator-runtime": {
       "version": "0.11.1",
       "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.11.1.tgz",
@@ -10675,6 +10681,15 @@
         "tslib": "^1.8.1"
       }
     },
+    "tsyringe": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/tsyringe/-/tsyringe-3.2.0.tgz",
+      "integrity": "sha512-9Gh3605NgIv/ssBtx+L1vWv+Ep0aBc0bVRgLssPyW1VKau56cdBX4Gu1v5GWdo9YwWzB3Wr0iiPO6nRT08nVyA==",
+      "dev": true,
+      "requires": {
+        "tslib": "^1.9.3"
+      }
+    },
     "tty-browserify": {
       "version": "0.0.0",
       "resolved": "https://registry.npmjs.org/tty-browserify/-/tty-browserify-0.0.0.tgz",

package.json

@@ -60,9 +60,11 @@
     "react-test-renderer": "^16.8.6",
     "redux": "^4.0.1",
     "redux-promise": "^0.6.0",
+    "reflect-metadata": "^0.1.13",
     "sass-loader": "^7.1.0",
     "sinon-chrome": "^3.0.1",
     "style-loader": "^0.23.1",
+    "tsyringe": "^3.2.0",
     "typescript": "^3.4.5",
     "web-ext-types": "^3.1.0",
     "webextensions-api-fake": "^0.7.4",