javascript - Bunyan with webpack - 尝试访问已被填充的 fs

Question

我正在尝试在基于 webpack 的应用程序中设置 Bunyan。

我有以下 webpack 配置:

  // these shims are needed for bunyan
        alias: {
            'dtrace-provider': path.resolve('empty-shim.js'),
            "fs": path.resolve('empty-shim.js'),
            'safe-json-stringify': path.resolve('empty-shim.js'),
            "mv": path.resolve('empty-shim.js'),
            'source-map-support': path.resolve('empty-shim.js')
        }

其中empty-shim是一个空文件

以及我的记录器中定义的以下流:

{
            level: "trace",
            path: "/logs/trace.log"
            // Logging from external libraries used by your app or very detailed application logging.
        },
        {
            level: "debug",
            path: "/logs/debug.log"
            // Anything else, i.e. too verbose to be included in "info" level.
        },
        {
            level: "info",
            path: "/logs/info.log"
            // Detail on regular operation.
        },
        {
            level: "warn",
            path: "/logs/warn.log"
            // A note on something that should probably be looked at by an operator eventually.
        },
        {
            level: "error",
            stream: process.stderr // we pipe error also to stdout
            // Fatal for a particular request, but the service/app continues
            // servicing other requests. An operator should look at this soon(ish).
        },
        {
            level: "error",
            path: "/logs/error.log"
            // Fatal for a particular request, but the service/app continues
            // servicing other requests. An operator should look at this soon(ish).
        },
        {
            level: "fatal",
            path: "/logs/fatal.log"
            // The service/app is going to stop or become unusable now.
            // An operator should definitely look into this soon.
        }

当我尝试访问我的记录器时，我收到此错误:

Uncaught TypeError: fs.createWriteStream is not a function
    at Logger.addStream (http://localhost:8080/bundle.js:81080:28)
    at http://localhost:8080/bundle.js:80958:19
    at Array.forEach (native)
    at new Logger (http://localhost:8080/bundle.js:80957:26)
    at Function.createLogger (http://localhost:8080/bundle.js:82060:13)
    at BunyanLogger.getLogger (http://localhost:8080/bundle.js:80479:18)

我认为这是因为 fs 已被填充到一个空文件。

我怎样才能让它发挥作用？

Answer 1

我通过使用 bunyan-sfdx-no-dtrace 别名作为 bunyan 的替代方案来解决这个烦恼。它是一个删除 dtrace 内容的 fork 。

这只是我的 webpack.config.js 的相关部分

module.exports = {
  resolve: {
    alias: {
      bunyan: "bunyan-sfdx-no-dtrace"
    }
  }
};

<小时/>

免责声明 AFAICT 本身和 Bunyan-sfdx-no-dtrace 均未主动/正确维护，因此买家请小心。我必须处理这个问题，因为 Bunyan 是我需要的模块的子依赖项。