Can't run latest code

[robertLeapYear]

2017-04-17T18_20_35_278Z-debug.log.zip

Darwin 16.5.0
npm ERR! argv "/usr/local/Cellar/node/7.8.0/bin/node" "/usr/local/bin/npm" "run" "browserify"
npm ERR! node v7.8.0
npm ERR! npm v4.2.0
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! rxmarbles@1.4.1 browserify: browserify -e ignore/es5src/app.js --outfile dist/js/app.js
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the rxmarbles@1.4.1 browserify script 'browserify -e ignore/es5src/app.js --outfile dist/js/app.js'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the rxmarbles package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! browserify -e ignore/es5src/app.js --outfile dist/js/app.js
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs rxmarbles
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls rxmarbles
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR! /Users/robertwerner/.npm/_logs/2017-04-17T18_20_35_253Z-debug.log

npm ERR! Darwin 16.5.0
npm ERR! argv "/usr/local/Cellar/node/7.8.0/bin/node" "/usr/local/bin/npm" "run" "build"
npm ERR! node v7.8.0
npm ERR! npm v4.2.0
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! rxmarbles@1.4.1 build: npm run less && npm run babel && npm run browserify
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the rxmarbles@1.4.1 build script 'npm run less && npm run babel && npm run browserify'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the rxmarbles package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! npm run less && npm run babel && npm run browserify
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs rxmarbles
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls rxmarbles
npm ERR! There is likely additional logging output above.