log provider disabled on prod - WIP - not working ...

log.config.ts

namespace SellerCenterExpress {
    'use strict';

    /**
     * @ngdoc function
     * @name scxApp.config:LogProvider
     * @description
     * # logConfiguration
     */
    class LogProvider {
        static $inject: string[] = [
            '$provide',
        ];

        constructor ($provide: ng.auto.IProvideService) {
            $provide.decorator(
                '$log',
                [
                    '$delegate',
                    function ($delegate) {
                        console.log('aaaa');
                        let enabled = false;
                        let $log = {
                            debugEnabled: function(flag) {
                                console.log('flag', flag);
                                console.log('flag1', !flag);
                                console.log('flag2', !!flag);

                                enabled = !!flag;
                            }
                        };

                        // methods implemented by Angular's $log service
                        ['log', 'warn', 'info', 'error'].forEach(function(methodName) {
                            console.log('b', methodName);
                            $log[methodName] = function() {
                                console.log('c', methodName);
                                console.log('enabled', enabled);
                                if (enabled) {
                                    console.log('$delegate', $delegate);
                                    let logger = $delegate;
                                    logger[methodName].apply(logger, arguments);
                                }
                                console.log('d', methodName);
                            };
                        });

                        return $log;
                    }
                ]
            );
        }
    }

    /**
     * @ngdoc function
     * @name scxApp.config:LogProvider
     * @description
     * # logConfiguration
     */
    class LogProviderDev {
        static $inject: string[] = [
            '$logProvider',
        ];

        constructor ($logProvider: ng.ILogProvider) {
            $logProvider.debugEnabled(true);
        }
    }

    scxApp.config(LogProvider);

    scxAppDev.config(LogProviderDev);
}