message: Run build in CI as part of test run to confirm it works
  Would have caught:
diff: "lint": "eslint src",
  "prepublish": ". ./resources/prepublish.sh",
  "preversion": ". ./resources/checkgit.sh && npm test",
  - "test": "npm run lint && npm run check && npm run testonly",
  + "test": "npm run lint && npm run check && npm run testonly && npm run build",
  "testonly": "babel-node ./node_modules/.bin/_mocha $npm_package_options_mocha"
  },
  "dependencies": {
  