18 lines
389 B
JavaScript
18 lines
389 B
JavaScript
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/**
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* Utility to wrap an async function and ensure all invocations happen
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* sequentially.
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* @param fn the async function to run
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* @return {Promise} a sequential version of the function
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*/
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export const sequential = fn => {
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let promise
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return async (...params) => {
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if (promise) {
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await promise
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}
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promise = fn(...params)
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await promise
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promise = null
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}
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}
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