keithpitt

# Add to `spec/support/database_state_loader.rb`

class DatabaseStateLoader
  class EnvironmentError < RuntimeError; end

  def self.load(path)
    new(path).load
  end

  def initialize(path)

paulirish

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent