使用 Gulp 将 browserify 模块设为外部

我有一个图书馆lib.js我想从中创建lib/a.js and lib/b.js并能够从脚本中使用它client.js using var a = require('lib/a.js');当我只包含已编译的内容时它就可以工作lib.js之前的图书馆client.js（所以，lib.js必须声明一个require函数知道lib/a.js)

我想我必须使用external and alias但我不确定正确的方法是什么

另外，是否可以有一个 Gulp 文件来自动为我的库中的文件夹创建所有别名？例如。为所有文件创建一个别名lib/ dir?

这里有几个 gulp 任务，它们将有助于分别构建通用的 lib.js 和 client.js 包。

请注意，在捆绑 lib.js 时，您必须告诉 browserify b.require() lib/*.js，并且在捆绑 client.js 时，您必须告诉 b.external() 将单独加载的库

var path = require('path');
var gulp = require('gulp');
var browserify = require('browserify');
var concat = require('gulp-concat');
var transform = require('vinyl-transform');

gulp.task('build-lib', function () {

  // use `vinyl-transform` to wrap around the regular ReadableStream returned by b.bundle();
  // so that we can use it down a vinyl pipeline as a vinyl file object.
  // `vinyl-transform` takes care of creating both streaming and buffered vinyl file objects.
  var browserified = transform(function(filename) {

    // basename, for eg: 'a.js'
    var basename = path.basename(filename);

    // define the exposed name that your client.js would use to require();
    // for eg: require('lib/a.js'); // -> exposed name should be 'lib/a.js'
    var expose = 'lib/' + basename;

    return browserify(filename)
      .require(filename, { expose: expose})
      .bundle();
  });

  return gulp.src(['./lib/*.js'])
    .pipe(browserified)
    .pipe(concat('lib.js'))
    .pipe(gulp.dest('./dist'));
});

gulp.task('build-client', function () {

  var browserified = transform(function(filename) {
    // filename = './client.js'

    // let browserify know that lib/a.js and and lib/b.js are external files
    // and will be loaded externally (in your case, by loading the bundled lib.js 
    // for eg: <script src='dist/lib.js'>)
    return browserify(filename)
      .external('lib/a.js')
      .external('lib/b.js')
      .bundle();
  });

  return gulp.src(['./client.js'])
    .pipe(browserified)
    .pipe(gulp.dest('./dist'));
});

gulp.task('default', ['build-lib', 'build-client']);