How to use Hyperledger composer event subscriber in angular - node.js

Question

this is eventSubscrbie js File.
'use strict';
const BusinessNetworkConnection = require('composer-client').BusinessNetworkConnection;
class SubscribeEvent{
constructor() {
this.NetworkConnection = new BusinessNetworkConnection();
this.CONNECTION_PROFILE_NAME = "admin#resumenetwork";
}
init() {
return this.NetworkConnection.connect(this.CONNECTION_PROFILE_NAME)
.then((result) => {
this.businessNetworkDefinition = result;
//LOG.info(this.businessNetworkDefinition.getIdentifier());
})
// and catch any exceptions that are triggered
.catch(function (error) {
throw error;
});
}
/** Listen for the sale transaction events
*/
listen(){
this.NetworkConnection.on('event',(getEvent)=>{
var temp = JSON.stringify(getEvent['txForUser']);
var evt = JSON.parse(temp);
console.log(evt['certificateName']);
console.log(evt['certificateScore']);
console.log(evt['organizationId']);
console.log(evt['organizationName']);
console.log(evt['dob']);
console.log(evt['expirationDate']);
console.log(evt['isPublic']);
console.log(evt['userId']);
console.log(evt['timestamp']);
});
}
}
module.exports = SubscribeEvent;
I want to use the code in angular4 component.
so I insert a BusinessNetworkConnection module.
In component ts file,
import { BusinessNetworkConnection } from 'composer-client';
export class test {
var businessnetworkconnection = BusinessNetworkConnection();
}
as a result, warning message
WARNING in ./~/composer-common/lib/connectionprofilemanager.js
132:57-69 Critical dependency: the request of a dependency is an
expression
WARNING in ./~/composer-common/lib/log/logger.js 422:27-35 Critical
dependency: the request of a dependency is an expression
WARNING in ./~/composer-common/lib/log/logger.js 618:23-39 Critical
dependency: the request of a dependency is an expression
WARNING in ./~/composer-common/lib/config/configmediator.js 44:27-35
Critical dependency: the request of a dependency is an expression
WARNING in ./~/composer-common/lib/module/loadModule.js 71:25-43
Critical dependency: the request of a dependency is an expression
and same warning message was displayed at my angular web page
all dependency module is already installed.

Answer 1

you can ignore them. This is simply warning about a dependency written as an expression (as it mentions). There are some solutions on the web if you don't want to see the warning messages in Angular.