/* @flow */
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import { inBrowser } from './dom'
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// use User Timing api (if present) for more accurate key precision
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const Time =
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inBrowser && window.performance && window.performance.now
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? window.performance
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: Date
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export function genStateKey (): string {
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return Time.now().toFixed(3)
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}
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let _key: string = genStateKey()
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export function getStateKey () {
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return _key
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}
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export function setStateKey (key: string) {
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return (_key = key)
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}
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