Install TypeScript

package-lock.json

@@ -395,6 +395,15 @@
         "@babel/helper-plugin-utils": "^7.0.0"
       }
     },
+    "@babel/plugin-syntax-typescript": {
+      "version": "7.3.3",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-typescript/-/plugin-syntax-typescript-7.3.3.tgz",
+      "integrity": "sha512-dGwbSMA1YhVS8+31CnPR7LB4pcbrzcV99wQzby4uAfrkZPYZlQ7ImwdpzLqi6Z6IL02b8IAL379CaMwo0x5Lag==",
+      "dev": true,
+      "requires": {
+        "@babel/helper-plugin-utils": "^7.0.0"
+      }
+    },
     "@babel/plugin-transform-react-display-name": {
       "version": "7.2.0",
       "resolved": "https://registry.npmjs.org/@babel/plugin-transform-react-display-name/-/plugin-transform-react-display-name-7.2.0.tgz",
@@ -435,6 +444,16 @@
         "@babel/plugin-syntax-jsx": "^7.2.0"
       }
     },
+    "@babel/plugin-transform-typescript": {
+      "version": "7.4.4",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-typescript/-/plugin-transform-typescript-7.4.4.tgz",
+      "integrity": "sha512-rwDvjaMTx09WC0rXGBRlYSSkEHOKRrecY6hEr3SVIPKII8DVWXtapNAfAyMC0dovuO+zYArcAuKeu3q9DNRfzA==",
+      "dev": true,
+      "requires": {
+        "@babel/helper-plugin-utils": "^7.0.0",
+        "@babel/plugin-syntax-typescript": "^7.2.0"
+      }
+    },
     "@babel/preset-react": {
       "version": "7.0.0",
       "resolved": "https://registry.npmjs.org/@babel/preset-react/-/preset-react-7.0.0.tgz",
@@ -448,6 +467,16 @@
         "@babel/plugin-transform-react-jsx-source": "^7.0.0"
       }
     },
+    "@babel/preset-typescript": {
+      "version": "7.3.3",
+      "resolved": "https://registry.npmjs.org/@babel/preset-typescript/-/preset-typescript-7.3.3.tgz",
+      "integrity": "sha512-mzMVuIP4lqtn4du2ynEfdO0+RYcslwrZiJHXu4MGaC1ctJiW2fyaeDrtjJGs7R/KebZ1sgowcIoWf4uRpEfKEg==",
+      "dev": true,
+      "requires": {
+        "@babel/helper-plugin-utils": "^7.0.0",
+        "@babel/plugin-transform-typescript": "^7.3.2"
+      }
+    },
     "@babel/runtime": {
       "version": "7.4.4",
       "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.4.4.tgz",
@@ -3948,14 +3977,12 @@
         "balanced-match": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true,
+          "dev": true
-          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -3975,8 +4002,7 @@
         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true,
+          "dev": true
-          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
@@ -4124,7 +4150,6 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
@@ -10378,6 +10403,12 @@
       "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=",
       "dev": true
     },
+    "typescript": {
+      "version": "3.4.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.4.5.tgz",
+      "integrity": "sha512-YycBxUb49UUhdNMU5aJ7z5Ej2XGmaIBL0x34vZ82fn3hGvD+bgrMrVDpatgz2f7YxUMJxMkbWxJZeAvDxVe7Vw==",
+      "dev": true
+    },
     "uglify-js": {
       "version": "3.3.25",
       "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.3.25.tgz",

package.json

@@ -23,6 +23,7 @@
     "@babel/cli": "^7.4.4",
     "@babel/core": "^7.4.4",
     "@babel/preset-react": "^7.0.0",
+    "@babel/preset-typescript": "^7.3.3",
     "babel-eslint": "^10.0.1",
     "babel-loader": "^8.0.5",
     "chai": "^4.2.0",
@@ -51,6 +52,7 @@
     "sass-loader": "^7.1.0",
     "sinon-chrome": "^3.0.1",
     "style-loader": "^0.23.1",
+    "typescript": "^3.4.5",
     "webextensions-api-fake": "^0.7.4",
     "webpack": "^4.30.0",
     "webpack-cli": "^3.3.1"