ctorParameters.map is not a function


#1

I tried install ng2-dragula. how I solve this issue?

TypeError: ctorParameters.map is not a function
    at ReflectionCapabilities.parameters (http://localhost:8100/build/main.js:47143:45)
    at Reflector.parameters (http://localhost:8100/build/main.js:47277:44)
    at CompileMetadataResolver.getDependenciesMetadata (http://localhost:8100/build/main.js:27326:54)
    at CompileMetadataResolver.getTypeMetadata (http://localhost:8100/build/main.js:27291:26)
    at CompileMetadataResolver.getDirectiveMetadata (http://localhost:8100/build/main.js:27066:28)
    at http://localhost:8100/build/main.js:27135:49
    at Array.forEach (native)
    at CompileMetadataResolver.getNgModuleMetadata (http://localhost:8100/build/main.js:27128:44)
    at http://localhost:8100/build/main.js:27116:50
    at Array.forEach (native)