fix(backend): update jest module aliases and commands

Removed npm test:watch as we can just use npm t -- --watch instead.
Did this to avoid duplicating pretest step.

backend/jest.config.js

@@ -8,6 +8,7 @@ module.exports = {
     '@email/(.*)': '<rootDir>/src/email/$1',
     '@telegram/(.*)': '<rootDir>/src/telegram/$1',
     '@test-utils/(.*)': '<rootDir>/src/test-utils/$1',
+    '@shared/(.*)': '<rootDir>/../shared/src/$1',
   },
   transform: {
     '^.+\\.(ts|tsx)$': 'ts-jest',

backend/package.json

@@ -4,15 +4,15 @@
   "description": "Backend / API server for Postman",
   "main": "build/server.js",
   "scripts": {
-    "build": "rimraf build && tsc --build -p tsconfig.build.json",
+    "build": "rimraf build && tsc --build tsconfig.build.json",
     "dev": "npm run postbuild && tsc-watch --onSuccess \"node ./build/server.js\"",
     "lint-no-fix": "tsc --noEmit && eslint --ext .js,.ts --cache .",
     "lint": "npm run lint-no-fix -- --fix",
     "postbuild": "npm run copy-assets",
     "start": "node build/server",
     "copy-assets": "copyfiles -u 1 src/assets/* src/**/*.sql build",
+    "pretest": "tsc --build",
     "test": "jest --maxWorkers=2",
-    "test:watch": "jest --watch",
     "precommit": "lint-staged"
   },
   "author": "",

backend/tsconfig.build.json

@@ -1,5 +1,10 @@
 // Excludes test in builds
+// We have to duplicate project references as they are not inherited.
+// See: https://github.com/microsoft/TypeScript/issues/27098
 {
   "extends": "./tsconfig.json",
-  "exclude": ["tests/"]
+  "exclude": ["tests/"],
+  "references": [
+    { "path": "../shared" }
+  ]
 }

backend/tsconfig.json

@@ -41,7 +41,7 @@
       "@email/*": ["email/*"],
       "@telegram/*": ["telegram/*"],
       "@shared/*": ["../../shared/src/*"],
-      "@test-utils/*": ["src/test-utils/*"]
+      "@test-utils/*": ["test-utils/*"]
     },
     "esModuleInterop": true,
     "experimentalDecorators": true,