fix Use#end return type in OneOf

[bolasblack]

No description provided.

[eliperelman]

Maybe I am just confused, but wouldn't all of the ends suffer from this?

[bolasblack]

@eliperelman For example:

new Config().module
  .rule('css')
    // ...
    .use('css-loader')
      .loader('url-loader')
      .end() // <= Rule
    .end() // <= Module
    // In the above scenario, the results are in line with our expectations.

  .rule('otherStaticFiles')
    // ...
    .oneOf('default')
      // ...
      .use('url')
        .loader('url-loader')
        // ...
        .end() // <= expect OneOf, now Rule
      .end() // <= expect Rule, now Module
    .end() // <= expect Module, now Config
  .end() // <= then tsc warned `Config` have no method named `end`

  .plugin('...')

If we add a type parameter Parent to Use class:

class Use<Parent = Rule> extends ChainedMap<Parent> implements Orderable {

It mean we can specify the Parent parameter in some case, and if we didn't assigned, then Parent will be Rule (that is the current behavior)

[eliperelman]

Ah, so the issue is that this particular end is vague because Use can belong to the Rule and a oneOf. 👍