无法部署 lodash

Question

我遇到了 lodash 的问题。当我使用 gulp 进行部署时，我总是遇到同样的错误：

vendors.min.js:3 GET http://127.0.0.1/projects/myproject/lodash 404 (Not Found)

我将库声明到我的 index.html 文件中

<script src="node_modules/lodash/lodash.js"></script>

我将 lodash 导入到我的 typescript 文件

///<reference path="../../../typings/modules/lodash/index.d.ts" />
import * as _ from "lodash";

当我在本地测试我的网站时（通过使用 npm start 启动 lite 服务器），这是可行的。

现在，我想使用 Gulp 部署我的网站。这是我的 gulp 文件：

gulp.task('app-bundle', function () {
  var tsProject = ts.createProject('tsconfig.json', {
      typescript: require('typescript'),
      outFile: 'app.js'
  });

  var tsResult = gulp.src([
    'node_modules/angular2/typings/browser.d.ts',
    'typings/main/ambient/firebase/firebase.d.ts',
    'app/**/*.ts'
  ])
    .pipe(ts(tsProject));

  return tsResult.js.pipe(addsrc.append('config-prod.js'))
                    .pipe(concat('app.min.js'))
                    .pipe(uglify())
                    .pipe(gulp.dest('./dist'));
});

gulp.task('vendor-bundle', function() {
    gulp.src([
            'node_modules/es6-shim/es6-shim.min.js',
            'node_modules/systemjs/dist/system-polyfills.js',
            'node_modules/angular2/bundles/angular2-polyfills.js',
            'node_modules/systemjs/dist/system.src.js',
            'node_modules/rxjs/bundles/Rx.js',
            'node_modules/angular2/bundles/angular2.dev.js',
            'node_modules/angular2/bundles/http.dev.js',
            'node_modules/angular2/bundles/router.min.js',
            'node_modules/lodash/lodash.js'

        ])
        .pipe(concat('vendors.min.js'))
        .pipe(uglify())
        .pipe(gulp.dest('./dist'));
});

gulp.task('default',[ 'app-bundle', 'vendor-bundle' ], function() {
  gulp.src('index.html')
    .pipe(htmlreplace({
        'vendor': 'vendors.min.js',
        'app': 'app.min.js'
    }))
    .pipe(gulp.dest('dist'));
});

当我测试我的网站时，出现以下错误：

    vendors.min.js:3 GET http://127.0.0.1/projects/myproject/lodash 404 (Not Found)r @ vendors.min.js:3e.scheduleTask @ vendors.min.js:3e.scheduleMacroTask @ vendors.min.js:3(anonymous function) @ vendors.min.js:3send @ VM3157:3L @ vendors.min.js:4(anonymous function) @ vendors.min.js:4e @ vendors.min.js:3(anonymous function) @ vendors.min.js:4(anonymous function) @ vendors.min.js:4(anonymous function) @ vendors.min.js:5(anonymous function) @ vendors.min.js:5(anonymous function) @ vendors.min.js:5(anonymous function) @ vendors.min.js:5(anonymous function) @ vendors.min.js:5(anonymous function) @ vendors.min.js:4e.invoke @ vendors.min.js:3e.run @ vendors.min.js:3(anonymous function) @ vendors.min.js:3e.invokeTask @ vendors.min.js:3e.runTask @ vendors.min.js:3o @ vendors.min.js:3invoke @ vendors.min.js:3
vendors.min.js:3 Error: XHR error (404 Not Found) loading http://127.0.0.1/projects/myproject/lodash
    Error loading http://127.0.0.1/projects/myproject/lodash as "lodash" from http://127.0.0.1/projects/myproject/services/base-services/base.services
    at o (http://127.0.0.1/projects/myproject/vendors.min.js:4:10124)
    at XMLHttpRequest.L.a.onreadystatechange (http://127.0.0.1/projects/myproject/vendors.min.js:4:10712)
    at XMLHttpRequest.t [as _onreadystatechange] (http://127.0.0.1/projects/myproject/vendors.min.js:3:12638)
    at e.invokeTask (http://127.0.0.1/projects/myproject/vendors.min.js:3:8519)
    at e.runTask (http://127.0.0.1/projects/myproject/vendors.min.js:3:5879)
    at XMLHttpRequest.invoke (http://127.0.0.1/projects/myproject/vendors.min.js:3:9628)

这是我的 SystemJS：

System.config({
  paths: {
    'rxjs/add/observable/*' : 'node_modules/rxjs/add/observable/*.js',
    'rxjs/add/operator/*' : 'node_modules/rxjs/add/operator/*.js',
    'rxjs/*' : 'node_modules/rxjs/*.js'
  },
  map: {
    '@angular' : 'angular2',
    'videogular2' : 'node_modules/videogular2',
    'rxjs': 'node_modules/rxjs',
    'lodash': 'node_modules/lodash'
  },
  packages: {
    map: {
      'rxjs': 'node_modules/rxjs'
    },
    app: {
      format: 'register',
      defaultExtension: 'js'
    },
    node_modules: {
      defaultExtension: 'js'
    },
    lodash:{
      main:'lodash',
      defaultExtension:'js'
    }
  }
});
System.import('app/boot')
      .then(null, console.error.bind(console));

多年来我一直在寻找解决方案，我非常感谢任何帮助:)。

当我部署时，我也会添加该脚本：

document.addEventListener('DOMContentLoaded', function () {
  System.import('boot')
        .then(null, console.error.bind(console));
});

Answer 1

我终于成功了！

1. 如下创建系统配置：

System.config({
    meta:{
        'vendors.min.js':{
            format:'global'
        }
    },
    map:{
        'lodash':'http://127.0.0.1/js/lodash.min.js'
    }
});

1. 为 lodash 添加一个 gulp 任务

gulp.task('lodash', function(){
    return gulp.src('node_modules/lodash/lodash.min.js')
        .pipe(gulp.dest('./dist/js'));
});

我希望这对其他人有帮助。