Node.js 使用Bunyan和Logentries登录Typescript

我想在ionic应用程序中使用logentries.com设置远程日志记录

这是我的

包.json的摘录：
代码
问题
我的IDE不会警告我任何错误。但一旦我运行应用程序，就会出现以下错误：

exists不是一个函数。（在“exists（pkgPath）”中，“exists”未定义）

我认为问题的核心是
@types
与实际的节点模块不匹配，但不清楚应该如何解决这个问题。
我也遇到过同样的问题。
bunyan日志条目
模块取决于
leu节点
：节点的日志条目模块

le_节点
使用浏览器中不可用的
net
和
tls
模块。
为了继续，我实现了一个定制的bunayan流，它通过日志文件将日志发送到日志条目。这是直接的代码，它的工作

下面是一个示例代码来说明此解决方案

创建班扬实例的LoggerService：

@Injectable()
export class LoggerService {
    constructor(private http: Http) {
    }

    public create(name: string): Logger{
        return Bunyan.createLogger({
            name: name,
            streams: [{
                stream: new LogentriesBunyanStream(AppConfig.LogEntries.token, this.http),
                type: 'raw'
            }]
        });
    }
}

向日志条目发送日志的bunyan自定义流：

export class LogentriesBunyanStream extends Writable {
    private token: string;
    private http: Http;

    constructor(token: string, http: Http) {
        super({objectMode: true});
        this.http = http;
        this.token = token;
    }

    public _write(rec: any, encoding?: string, cb?: Function) {
        // Replace the level code with a friendly string 
        rec.level = LogentriesBunyanStream.resolveLevel(rec.level);

        // Send the post request to logentries
        // https://docs.logentries.com/docs/http-post
        const LOGENTRIES_URL = "https://webhook.logentries.com/noformat/logs/";
        let headers = new Headers();
        headers.append("Content-Type", 'application/json');
        let requestoptions = new RequestOptions({
            method: RequestMethod.Post,
            headers: headers,
            body: JSON.stringify(rec)
        });
        this.http.request(LOGENTRIES_URL + this.token, requestoptions).toPromise().then((response) => {
            cb();
        }).catch((error) =>{
            console.log("faield to send log to the logentries server");
        });
    };

    private static resolveLevel(bunyanLevel) {
        let levelToName = {
            10: 'DEBUG',
            20: 'DEBUG',
            30: 'INFO',
            40: 'WARN',
            50: 'ERROR',
            60: 'CRIT'
        };
        return levelToName[bunyanLevel] || 'INFO';
    }
};

也许有帮助

问候

findPackage@http://localhost:8101/build/main.js:131257:18
register@http://localhost:8101/build/main.js:131332:31
http://localhost:8101/build/main.js:112585:50
http://localhost:8101/build/main.js:113391:34
__webpack_require__@http://localhost:8101/build/main.js:20:34
http://localhost:8101/build/main.js:129423:37
__webpack_require__@http://localhost:8101/build/main.js:20:34
http://localhost:8101/build/main.js:29972:95
__webpack_require__@http://localhost:8101/build/main.js:20:34
http://localhost:8101/build/main.js:80592:90
__webpack_require__@http://localhost:8101/build/main.js:20:34
http://localhost:8101/build/main.js:59390:96
__webpack_require__@http://localhost:8101/build/main.js:20:34
http://localhost:8101/build/main.js:59495:94
__webpack_require__@http://localhost:8101/build/main.js:20:34
http://localhost:8101/build/main.js:128048:94
__webpack_require__@http://localhost:8101/build/main.js:20:34
http://localhost:8101/build/main.js:116775:92
__webpack_require__@http://localhost:8101/build/main.js:20:34
http://localhost:8101/build/main.js:149625:89
__webpack_require__@http://localhost:8101/build/main.js:20:34
http://localhost:8101/build/main.js:66:37
global code@http://localhost:8101/build/main.js:67:12 

@Injectable()
export class LoggerService {
    constructor(private http: Http) {
    }

    public create(name: string): Logger{
        return Bunyan.createLogger({
            name: name,
            streams: [{
                stream: new LogentriesBunyanStream(AppConfig.LogEntries.token, this.http),
                type: 'raw'
            }]
        });
    }
}

export class LogentriesBunyanStream extends Writable {
    private token: string;
    private http: Http;

    constructor(token: string, http: Http) {
        super({objectMode: true});
        this.http = http;
        this.token = token;
    }

    public _write(rec: any, encoding?: string, cb?: Function) {
        // Replace the level code with a friendly string 
        rec.level = LogentriesBunyanStream.resolveLevel(rec.level);

        // Send the post request to logentries
        // https://docs.logentries.com/docs/http-post
        const LOGENTRIES_URL = "https://webhook.logentries.com/noformat/logs/";
        let headers = new Headers();
        headers.append("Content-Type", 'application/json');
        let requestoptions = new RequestOptions({
            method: RequestMethod.Post,
            headers: headers,
            body: JSON.stringify(rec)
        });
        this.http.request(LOGENTRIES_URL + this.token, requestoptions).toPromise().then((response) => {
            cb();
        }).catch((error) =>{
            console.log("faield to send log to the logentries server");
        });
    };

    private static resolveLevel(bunyanLevel) {
        let levelToName = {
            10: 'DEBUG',
            20: 'DEBUG',
            30: 'INFO',
            40: 'WARN',
            50: 'ERROR',
            60: 'CRIT'
        };
        return levelToName[bunyanLevel] || 'INFO';
    }
};