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17 lines
327 B
17 lines
327 B
// @flow
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export default function debounce<T>(fn: Function): () => Promise<T> {
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let pending;
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return () => {
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if (!pending) {
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pending = new Promise<T>(resolve => {
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Promise.resolve().then(() => {
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pending = undefined;
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resolve(fn());
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});
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});
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}
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return pending;
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};
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}
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