Install js-yaml
"@types/deep-equal": "1.0.1",
"@types/history": "4.6.2",
"@types/js-cookie": "2.1.0",
+ "@types/js-yaml": "^3.11.2",
"@types/lodash": "4.14.110",
"@types/query-string": "6.1.0",
"@types/raven": "2.5.1",
"deep-equal": "1.0.1",
"history": "4.7.2",
"js-cookie": "2.2.0",
+ "js-yaml": "^3.12.0",
"lodash": "4.17.10",
"moment": "2.22.2",
"normalizr": "3.2.4",
