26 lines
521 B
JavaScript
26 lines
521 B
JavaScript
import noop from 'lodash/noop'
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const enableMarks = process.browser &&
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performance.mark &&
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(process.env.NODE_ENV !== 'production' ||
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new URLSearchParams(location.search).get('marks') === 'true')
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const perf = process.browser && performance
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function doMark (name) {
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perf.mark(`start ${name}`)
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}
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function doStop (name) {
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perf.mark(`end ${name}`)
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perf.measure(name, `start ${name}`, `end ${name}`)
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}
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const mark = enableMarks ? doMark : noop
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const stop = enableMarks ? doStop : noop
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export {
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mark,
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stop
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}
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