re-added webpack-env

package.json

@@ -7,6 +7,7 @@
     "@types/electron-debug": "^2.1.0",
     "@types/js-yaml": "^3.12.3",
     "@types/node": "12.7.12",
+    "@types/webpack-env": "^1.15.2",
     "@typescript-eslint/eslint-plugin": "^2.26.0",
     "@typescript-eslint/parser": "^2.29.0",
     "apply-loader": "2.0.0",

yarn.lock

@@ -245,6 +245,11 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-12.11.7.tgz#57682a9771a3f7b09c2497f28129a0462966524a"
   integrity sha512-JNbGaHFCLwgHn/iCckiGSOZ1XYHsKFwREtzPwSGCVld1SGhOlmZw2D4ZI94HQCrBHbADzW9m4LER/8olJTRGHA==
 
+"@types/webpack-env@^1.15.2":
+  version "1.15.2"
+  resolved "https://registry.yarnpkg.com/@types/webpack-env/-/webpack-env-1.15.2.tgz#927997342bb9f4a5185a86e6579a0a18afc33b0a"
+  integrity sha512-67ZgZpAlhIICIdfQrB5fnDvaKFcDxpKibxznfYRVAT4mQE41Dido/3Ty+E3xGBmTogc5+0Qb8tWhna+5B8z1iQ==
+
 "@types/yargs-parser@*":
   version "15.0.0"
   resolved "https://registry.yarnpkg.com/@types/yargs-parser/-/yargs-parser-15.0.0.tgz#cb3f9f741869e20cce330ffbeb9271590483882d"