Passing arguments to evaluatePage()

Created by: arthurakay

What is the current behavior?

  async _scrape() {
    if (!this._options.evaluatePage) return null;
    await this._addJQuery();
    return this._page.evaluate(this._options.evaluatePage);
  }

See the Puppeteer docs -- evaluatePage() can be passed arguments.

headless-chrome-crawler does not allow me to pass arguments to the function.

What is the motivation / use case for changing the behavior?

It would be nice to have access to variables from outside of the page context; e.g., if I needed code to eval in the page context.

Solution could be something like the following:

  async _scrape() {
    if (!this._options.evaluatePage) return null;
    await this._addJQuery();
    return this._page.evaluate(this._options.evaluatePage, this._options.evaluatePageArguments);
  }

I can issue a pull request for this (including some updates to the documentation), but I wanted to ask if this would even be considered/accepted first.