npm 包怎么可能影响 Protractor 执行的 beforeLaunch 阶段？

Question

在查看 protractor-jasmine2-screenshot-reporter npm 包中的代码时，我注意到它包含一个 beforeLaunch 函数，该函数与其余函数一起导出。

我知道生命周期阶段运行按以下顺序排列，所以我的问题是：当 jasmine 对象本身直到 onPrepare 阶段才可用时，这个报告者怎么可能影响执行的 beforeLaunch 阶段？

--- beforeLaunch           
    --- onPrepare          (set in conf) ***reporters initialized here
      --- jasmineStarted   (set in reporter)
        --- beforeAll
         --- suiteStarted  (set in reporter)
          --- specStarted  (set in reporter)
           --- beforeEach  (set in testFile)
           +++ afterEach   (set in testFile)
          +++ specDone     (set in reporter)
         +++ suiteDone     (set in reporter)
        +++ afterAll
      +++ jasmineDone      (set in reporter)
    +++ onComplete         (set in conf)
+++ afterLaunch

来自 protractor-jasmine2-screenshot-reporter 的代码

function Jasmine2ScreenShotReporter(opts) {

  this.beforeLaunch = function (callback) {
  };

  this.afterLaunch = function (callback) {
  };

  this.jasmineStarted = function (suiteInfo) {
  };

  this.suiteStarted = function (suite) {
  };

  this.suiteDone = function (suite) {
  };

  this.specStarted = function (spec) {
  };

  this.specDone = function (spec) {
  };

  this.jasmineDone = function () {
  };

  return this;
}

我可能从根本上误解了这里的某些行为，但希望有人能为我阐明这一点。

Answer 1

除了 Jasmine 挂钩之外，Protractor 使用额外的插件挂钩并解决这些问题。这些通常在 Protractor 的 runner 中解决。您可以在此处阅读有关插件的信息：https://github.com/angular/protractor/blob/master/lib/plugins.ts#L25

因此，例如，onPrepare 插件已在配置中选中 (https://github.com/angular/protractor/blob/selenium4/lib/runner.ts#L63) and executed by the runner (https://github.com/angular/protractor/blob/selenium4/lib/runner.ts#L82)。这两个引用运行器的文件用于 selenium 4 升级分支。查看这些版本更容易，因为它们没有可用的承诺链。

npm 包怎么可能影响 Protractor 执行的 beforeLaunch 阶段？

How can a npm package ever possibly affect the beforeLaunch stage of the execution for Protractor?

node.js

npm

jasmine

protractor

jasmine-reporters