Pin proj4 to version < 2.4
MODIFY
package.json
package.json
"nib": "^1.1.2",
"node-resemble": "^1.1.3",
"phantomjs-prebuilt": "^2.1.5",
- "proj4": "^2.3.14",
+ "proj4": "2.3.16",
"raw-body": "^2.1.6",
"sinon": "1.17.3",
"style-loader": "^0.13.1",

Pin proj4 to version < 2.4