message: Perform a sanity test to detect leaks
diff: "postinstall": "yarn build",
  "publish": "yarn build-clean && yarn build && lerna publish --silent",
  "test-ci-es5-build-in-browser": "karma start --single-run",
  - "test-ci": "yarn typecheck && yarn lint && yarn lint-es5-build && yarn lint:md:ci && yarn jest-coverage -i --reporters jest-silent-reporter && node scripts/mapCoverage.js && codecov",
  + "test-ci": "yarn typecheck && yarn lint && yarn lint-es5-build && yarn lint:md:ci && yarn jest-coverage -i --reporters jest-silent-reporter && yarn test-leak && node scripts/mapCoverage.js && codecov",
  "test-ci-partial": "yarn jest -i --reporters jest-silent-reporter",
  "test-pretty-format-perf": "node packages/pretty-format/perf/test.js",
  + "test-leak": "yarn jest -i --detectLeaks jest-mock jest-diff jest-repl",
  "test": "yarn typecheck && yarn lint && yarn jest",
  "typecheck": "flow check --include-warnings",
  "watch": "yarn build && node ./scripts/watch.js"
  