Function watchPackageFiles

tools/isobuild/package-source.js:515–519

(watchSet)

    }

    function watchPackageFiles(watchSet) {
      _.each(packageFileHashes, (hash, path) => {
        watchSet.addFile(path, hash);
      });
    }

    // Any package that depends on us needs to be rebuilt if our package.js file
    // changes, because a change to package.js might add or remove a plugin,