WARNING Compiled with 4 warnings

[laof]

Environment

• vue version : 2.5.8
• webpack version : 2.3.3

  Programs

  npm run dev
  or npm run build

  Current behavior

 WARNING  Compiled with 4 warnings

 warning  in ./~/dagre-d3/lib/graphlib.js

5:4-11 Critical dependency: require function is used in a way in which dependencies cannot be statically extracted

 warning  in ./~/dagre-d3/lib/dagre.js

5:4-11 Critical dependency: require function is used in a way in which dependencies cannot be statically extracted

 warning  in ./~/dagre-d3/lib/lodash.js

5:4-11 Critical dependency: require function is used in a way in which dependencies cannot be statically extracted

 warning  in ./~/dagre-d3/lib/d3.js

5:6-13 Critical dependency: require function is used in a way in which dependencies cannot be statically extracted