Identifier 'vis' must be imported from a module

[kbhagchandani]

I have tried to include this in my project via npm install but it is failed. I am using following components :

• NodeJS v6.8.1
• NPM 3.10.8
• Angular2 2.4.10

Please help me to use this component. Better if we can have step by step guide/read me for angular 2

/home/kapil/Work/RecEx/frontend/node_modules/ng2-vis/components/network/vis-network.service.d.ts(624,47): error TS2686: Identifier 'vis' must be imported from a module
/home/kapil/Work/RecEx/frontend/node_modules/ng2-vis/components/network/vis-network.service.d.ts(624,62): error TS2686: Identifier 'vis' must be imported from a module
/home/kapil/Work/RecEx/frontend/node_modules/ng2-vis/components/network/vis-network.service.d.ts(636,47): error TS2686: Identifier 'vis' must be imported from a module
/home/kapil/Work/RecEx/frontend/node_modules/ng2-vis/components/network/vis-network.service.d.ts(636,62): error TS2686: Identifier 'vis' must be imported from a module
/home/kapil/Work/RecEx/frontend/node_modules/ng2-vis/node_modules/@types/vis/index.d.ts(764,52): error TS2686: Identifier 'vis' must be imported from a module