fix: Review Fixes

* remove invalid watch spec for rollup files
* remove specialized watch commands since watch covers everything now
* added a script to ensure server, app and tests are built before running testem

package.json

@@ -39,14 +39,15 @@
   "scripts": {
     "build": "lerna run build --ignore=@pollyjs/ember --parallel",
     "build:prod": "NODE_ENV=production yarn build && NODE_ENV=production MINIFY=true yarn build",
-    "build:watch": "npm-run-all clean watch",
-    "prewatch": "yarn clean server:build",
+    "prewatch": "yarn server:build",
     "watch": "lerna run watch-all --parallel",
+    "test:check": "./scripts/require-test-build.sh",
     "clean": "rimraf packages/@pollyjs/*/dist",
     "lint": "eslint .",
     "lint:fix": "yarn run lint --fix",
     "postlint:fix": "prettier --ignore-path .eslintignore --write \"**/*.{json,md,html,yml,css}\"",
-    "pretest:ci": "npm-run-all clean server:build build",
+    "pretest:ci": "npm-run-all clean test:clean server:build build",
+    "pretest": "yarn test:check",
     "test": "testem",
     "test:ci": "testem ci",
     "test:build": "lerna run test:build --parallel",
@@ -55,7 +56,6 @@
     "test:jest": "jest",
     "test:ember": "lerna run test --stream --no-prefix --scope=@pollyjs/ember",
     "server:build": "yarn build --scope=@pollyjs/node-server --scope=@pollyjs/utils",
-    "server:watch": "yarn build:watch --scope=@pollyjs/node-server --scope=@pollyjs/utils",
     "docs:serve": "docsify serve ./docs",
     "docs:publish": "gh-pages --dist docs --dotfiles --message 'chore: Publish docs'",
     "release": "npm-run-all \"release:version {@}\" release:publish --",

scripts/require-test-build.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+
+if [ ! -f "./packages/@pollyjs/node-server/dist/cjs/pollyjs-node-server.js" ]; then
+  echo "pollyjs: test server build not found; run either '$ yarn watch' or '$ yarn server:build'"
+  exit 1
+fi
+
+if [ ! -f "./packages/@pollyjs/core/dist/cjs/pollyjs-core.js" ]; then
+  echo "pollyjs: build not found; run either '$ yarn watch' or '$ yarn build'"
+  exit 1
+fi
+
+if [ ! -f "./packages/@pollyjs/core/build/node/test-bundle.cjs.js" ]; then
+  echo "pollyjs: test build not found; run either '$ yarn watch' or '$ yarn test:build'"
+  exit 1
+fi

testem.js

@@ -8,7 +8,7 @@ module.exports = {
   launch_in_ci: ['Chrome', 'Node', 'Jest', 'Ember', 'ESLint'],
   launch_in_dev: ['Chrome', 'Node', 'Jest', 'Ember', 'ESLint'],
   watch_files: [
-    './scripts/rollup/**/*',
+    './scripts/rollup/*',
     './packages/@pollyjs/*/build/**/*',
     './packages/@pollyjs/*/dist/**/*'
   ],