message: [next] Another postpack fix
  ## Description
  Another issue like , for a different package.
diff: "format": "npm run prettier:fix",
  "lint": "npm run prettier && npm run eslint",
  "lint:fix": "npm run prettier:fix && npm run eslint:fix",
  - "postpack": "cd dist && tar -cvf ../experimental-tree.test-files.tar ./test",
  + "postpack": "tar -cf ./experimental-tree.test-files.tar ./src/test ./dist/test",
  "perf": "cross-env FLUID_TEST_VERBOSE=1 mocha \"dist/**/*.tests.js\" --node-option unhandled-rejections=strict,expose-gc --exit -r node_modules/@fluidframework/mocha-test-setup --perfMode --fgrep @Benchmark --reporter @fluid-tools/benchmark/dist/MochaReporter.js --timeout 30000",
  "perf:measure": "npm run perf -- --fgrep @Measurement",
  "prettier": "prettier --check \"**/*.{js,json,jsx,md,ts,tsx,yml,yaml}\"",
  