message: protobuf-demo: Update build script
diff: "lint-fix": "eslint --max-warnings 0 \"**/*.{js,ts}\" --fix",
  "move-types": "shx rm -rf ./types/* && shx mv build/types/* ./types && rm -rf ./types/testdata && shx rm -f ./types/*.spec.d.ts",
  "format-types": "prettier --write --loglevel warn \"./types/**/*.d.ts\"",
  - "build": "shx rm -rf ./build && tsc && yarn move-types && yarn format-types",
  + "build": "shx rm -rf ./build && tsc && shx mkdir -p build/generated && shx cp ./src/generated/*.js ./build/generated && shx mkdir -p ./build/types/generated && shx cp ./src/generated/*.d.ts ./build/types/generated && yarn move-types && yarn format-types",
  "build-or-skip": "[ -n \"$SKIP_BUILD\" ] || yarn build",
  "test-node": "node jasmine-testrunner.js",
  "test-firefox": "yarn pack-web && karma start --single-run --browsers Firefox",
  