@zendesk/react-measure-timing-hooks/src/utilities.ts

react hooks for measuring time to interactive and time to render of components

/**
 * Copyright Zendesk, Inc.
 *
 * Use of this source code is governed under the Apache License, Version 2.0
 * found at http://www.apache.org/licenses/LICENSE-2.0.
 */

export const noop = () => {
  /* noop */
}

export const every = <T>(
  iterable: Iterable<T>,
  predicate: (value: T) => boolean,
) => {
  for (const value of iterable) if (!predicate(value)) return false

  return true
}

let memoizedCurrentBrowserSupportForNonResponsiveStateDetection:
  | boolean
  | undefined

/** can be easily mocked if needed */
export const getCurrentBrowserSupportForNonResponsiveStateDetection =
  // eslint-disable-next-line no-return-assign
  (): boolean =>
    memoizedCurrentBrowserSupportForNonResponsiveStateDetection ??
    (memoizedCurrentBrowserSupportForNonResponsiveStateDetection =
      typeof PerformanceObserver !== 'undefined' &&
      Array.isArray(PerformanceObserver.supportedEntryTypes) &&
      PerformanceObserver.supportedEntryTypes.includes('longtask'))

export const resetMemoizedCurrentBrowserSupportForNonResponsiveStateDetection =
  () => {
    memoizedCurrentBrowserSupportForNonResponsiveStateDetection = undefined
  }