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The website appears to be discussing or providing information on various JavaScript functions and methods related to performance measurement and timing. It mentions the "performance" object in the browser's "window" object, which allows measuring and monitoring page load times. There is also a reference to the function "noop," which likely means a no-operation function that performs no action. Additionally, there are references to other JavaScript libraries and polyfills used for cross-browser compatibility. The exact purpose or content of the site cannot be determined solely from this text snippet.