Node.js 用npm脚本替换gulp任务

我的gulpfile.js中有一个gulp任务，如下所示：

gulp.task('build', function() {
    let webPath = './webpack.config.dev.js';

    if (process.env.var) {
        webpackConfigPath = './webpack.config.' + process.env.var + '.js';
    }

    const webCon = require(webPath);

    return gulp.src('/js/index.js')
        .pipe(webpackStream(webCon, require("webpack")))
        .pipe(gulp.dest(BUILD_PATH));
});

function buildApp() {
    let webPath = '/webpack.config.dev.js';
    if (process.env.var) {
        webpath = '/webpack.config.' + process.env.var + '.js';
    }
    const webCon= require(webpackConfigPath);

    let readStr = fs.createReadStream('/ui/js/index.js');
    let writeStr = fs.createWriteStream('/src/main/resources/public/app.js');

    readStr.pipe(webpackStream(webpackConfig, require("webpack")))
        .pipe(writeStr);
}

为了替换它并摆脱我的吞咽依赖，我使用了fs extra软件包，并编写了一个函数，如下所示：

gulp.task('build', function() {
    let webPath = './webpack.config.dev.js';

    if (process.env.var) {
        webpackConfigPath = './webpack.config.' + process.env.var + '.js';
    }

    const webCon = require(webPath);

    return gulp.src('/js/index.js')
        .pipe(webpackStream(webCon, require("webpack")))
        .pipe(gulp.dest(BUILD_PATH));
});

function buildApp() {
    let webPath = '/webpack.config.dev.js';
    if (process.env.var) {
        webpath = '/webpack.config.' + process.env.var + '.js';
    }
    const webCon= require(webpackConfigPath);

    let readStr = fs.createReadStream('/ui/js/index.js');
    let writeStr = fs.createWriteStream('/src/main/resources/public/app.js');

    readStr.pipe(webpackStream(webpackConfig, require("webpack")))
        .pipe(writeStr);
}

然而，这引发了一个错误，即

TypeError: file.isNull is not a function
    at Stream.<anonymous> (path\node_modules\webpack-stream\index.js:95:14)
    at Stream.stream.write (path\node_modules\through\index.js:26:11)
    at ReadStream.ondata (_stream_readable.js:727:22)
    at ReadStream.emit (events.js:210:5)
    at addChunk (_stream_readable.js:309:12)
    at readableAddChunk (_stream_readable.js:290:11)
    at ReadStream.Readable.push (_stream_readable.js:224:10)
    at internal/fs/streams.js:191:12
    at FSReqCallback.wrapper [as oncomplete] (fs.js:470:5)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! esg-scoring-model@0.0.1 build: `node build.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the esg-scoring-model@0.0.1 build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     path\AppData\Roaming\npm-cache\_logs\2020-01-27T20_31_56_858Z-debug.log

TypeError:file.isNull不是函数
在溪流中。（path\node\u modules\webpack stream\index.js:95:14）
在Stream.Stream.write（path\node\u modules\through\index.js:26:11）
在ReadStream.ondata（_stream_readable.js:727:22）
在ReadStream.emit（events.js:210:5）
在addChunk（_stream_readable.js:309:12）
在readableAddChunk（_stream_readable.js:290:11）
在ReadStream.Readable.push（_stream_Readable.js:224:10）
在内部/fs/streams.js:191:12
在FSReqCallback.wrapper[as oncomplete]（fs.js:470:5）
npm错误！代码失效循环
npm错误！错误1
npm错误！esg评分-model@0.0.1build:`node build.js`
npm错误！退出状态1
npm错误！
npm错误！在esg评分中失败-model@0.0.1构建脚本。
npm错误！这可能不是npm的问题。上面可能还有其他日志输出。
npm错误！此运行的完整日志可在以下位置找到：
npm错误！path\AppData\Roaming\npm缓存\\u日志\2020-01-27T20\u 31\u 56\u 858Z-debug.log

---

有什么建议吗？

它在哪里失败了，比如哪个呼叫？@Mikkel它在readStr.pipe（…）上失败了，我怀疑可能是这样。我认为

require（“webpack”）

应该可以，假设

webpackStream

是一个webpack函数，那么肯定是

webpackConfig

错了。代码片段没有显示这是如何得到的defined@Mikkel你是对的，我又看了一眼我的网页配置文件，发现了问题所在。非常感谢。