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https://github.com/tenrok/vue-meta.git
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Sébastien Chopin
22 lines
818 B
JavaScript
22 lines
818 B
JavaScript
// fallback to timers if rAF not present
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const stopUpdate = (typeof window !== 'undefined' ? window.cancelAnimationFrame : null) || clearTimeout
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const startUpdate = (typeof window !== 'undefined' ? window.requestAnimationFrame : null) || ((cb) => setTimeout(cb, 0))
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/**
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* Performs a batched update. Uses requestAnimationFrame to prevent
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* calling a function too many times in quick succession.
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* You need to pass it an ID (which can initially be `null`),
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* but be sure to overwrite that ID with the return value of batchUpdate.
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*
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* @param {(null|Number)} id - the ID of this update
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* @param {Function} callback - the update to perform
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* @return {Number} id - a new ID
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*/
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export default function batchUpdate (id, callback) {
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stopUpdate(id)
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return startUpdate(() => {
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id = null
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callback()
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})
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}
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