How to use the msal.Constants.idToken function in msal

tokenType = Constants.accessToken;
                    authenticationResult.tokenType = tokenType;
                    this._renewActive = false;
                    // Call within the same context without full page redirect keeps the callback
                    // id_token or access_token can be renewed
                    if (window.parent === window && !window.parent.callBackMappedToRenewStates[requestInfo.stateResponse]) {
                        if (token) {
                            this.broadcastService.broadcast("msal:acquireTokenSuccess", authenticationResult);
                        }
                        else if (error && errorDescription) {
                            this.broadcastService.broadcast("msal:acquireTokenFailure",   msalError);
                        }
                    }

                } else if (requestInfo.requestType === "LOGIN") {
                    tokenType = Constants.idToken;
                    authenticationResult.tokenType = tokenType;
                    this.updateDataFromCache(this.loginScopes);
                    if (this._oauthData.userName) {
                        setTimeout(() => {
                            // id_token is added as token for the app
                            this.updateDataFromCache(this.loginScopes);
                            //todo temp commented
                            //  this.userInfo = this._oauthData;
                        }, 1);
                        this.broadcastService.broadcast("msal:loginSuccess", authenticationResult);
                    } else {
                        this.broadcastService.broadcast("msal:loginFailure", msalError);
                    }
                }

                if (callback && typeof callback === "function") {

tokenType = Constants.accessToken;
                    authenticationResult.tokenType = tokenType;
                    this._renewActive = false;
                    // Call within the same context without full page redirect keeps the callback
                    // id_token or access_token can be renewed
                    if (window.parent === window && !window.parent.callBackMappedToRenewStates[requestInfo.stateResponse]) {
                        if (token) {
                            this.broadcastService.broadcast("msal:acquireTokenSuccess", authenticationResult);
                        }
                        else if (error && errorDescription) {
                            this.broadcastService.broadcast("msal:acquireTokenFailure", msalError);
                        }
                    }
                }
                else if (requestInfo.requestType === "LOGIN") {
                    tokenType = Constants.idToken;
                    authenticationResult.tokenType = tokenType;
                    this.updateDataFromCache(this.loginScopes);
                    if (this._oauthData.userName) {
                        setTimeout(() => {
                            // id_token is added as token for the app
                            this.updateDataFromCache(this.loginScopes);
                            //todo temp commented
                            //  this.userInfo = this._oauthData;
                        }, 1);
                        this.broadcastService.broadcast("msal:loginSuccess", authenticationResult);
                    }
                    else {
                        this.broadcastService.broadcast("msal:loginFailure", msalError);
                    }
                }
                if (callback && typeof callback === "function") {

processRedirectCallBack(hash) {
        this._logger.info('Processing the callback from redirect response');
        const requestInfo = this.getRequestInfo(hash);
        const token = requestInfo.parameters[Constants.accessToken] || requestInfo.parameters[Constants.idToken];
        const errorDesc = requestInfo.parameters[Constants.errorDescription];
        const error = requestInfo.parameters[Constants.error];
        var tokenType;
        this._cacheStorage.removeItem(Constants.urlHash);
        var msalError = new MSALError(error, errorDesc);
        var authenticationResult = new AuthenticationResult(token);
        if (requestInfo.parameters[Constants.accessToken]) {
            tokenType = Constants.accessToken;
            if (token) {
                authenticationResult.tokenType = tokenType;
                this.broadcastService.broadcast("msal:acquireTokenSuccess", authenticationResult);
            }
            else if (error && errorDesc) {
                //TODO this should also send back the scopes
                this.broadcastService.broadcast("msal:acquireTokenFailure", msalError);
            }

private processRedirectCallBack(hash: string): void {
        this._logger.info('Processing the callback from redirect response');
        const requestInfo = this.getRequestInfo(hash);
        const token = requestInfo.parameters[Constants.accessToken] || requestInfo.parameters[Constants.idToken];
        const errorDesc = requestInfo.parameters[Constants.errorDescription];
        const error = requestInfo.parameters[Constants.error];
        var tokenType: string;
        this._cacheStorage.removeItem(Constants.urlHash);
        var msalError = new MSALError(error, errorDesc);
        var authenticationResult = new AuthenticationResult(token);
        if (requestInfo.parameters[Constants.accessToken]) {
            tokenType = Constants.accessToken;
            if (token) {
                authenticationResult.tokenType= tokenType;
                this.broadcastService.broadcast("msal:acquireTokenSuccess", authenticationResult);
            }
            else if (error && errorDesc) {
                //TODO this should also send back the scopes
                this.broadcastService.broadcast("msal:acquireTokenFailure", msalError);
            }

this._cacheStorage.removeItem(Constants.urlHash);
        var msalError = new MSALError(error, errorDesc);
        var authenticationResult = new AuthenticationResult(token);
        if (requestInfo.parameters[Constants.accessToken]) {
            tokenType = Constants.accessToken;
            if (token) {
                authenticationResult.tokenType = tokenType;
                this.broadcastService.broadcast("msal:acquireTokenSuccess", authenticationResult);
            }
            else if (error && errorDesc) {
                //TODO this should also send back the scopes
                this.broadcastService.broadcast("msal:acquireTokenFailure", msalError);
            }
        }
        else {
            tokenType = Constants.idToken;
            if (token) {
                authenticationResult.tokenType = tokenType;
                this.broadcastService.broadcast("msal:loginSuccess", authenticationResult);
            }
            else if (error && errorDesc) {
                this.broadcastService.broadcast("msal:loginFailure", msalError);
            }
        }
    }
    isUnprotectedResource(url) {

this._cacheStorage.removeItem(Constants.urlHash);
        var msalError = new MSALError(error, errorDesc);
        var authenticationResult = new AuthenticationResult(token);
        if (requestInfo.parameters[Constants.accessToken]) {
            tokenType = Constants.accessToken;
            if (token) {
                authenticationResult.tokenType= tokenType;
                this.broadcastService.broadcast("msal:acquireTokenSuccess", authenticationResult);
            }
            else if (error && errorDesc) {
                //TODO this should also send back the scopes
                this.broadcastService.broadcast("msal:acquireTokenFailure", msalError);
            }
        }
        else {
            tokenType = Constants.idToken;
            if (token) {
                authenticationResult.tokenType= tokenType;
                this.broadcastService.broadcast("msal:loginSuccess", authenticationResult);
            }
            else if (error && errorDesc) {
                this.broadcastService.broadcast("msal:loginFailure", msalError);
            }
        }
    }