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20 lines
569 B
TypeScript
20 lines
569 B
TypeScript
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type DeferFunction<TArgs extends any[], TReturn> = (...args: TArgs) => TReturn;
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// useDefer is a function that takes a function and returns a function that
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// calls the original function and then calls the onComplete function.
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export function useDefer<TArgs extends any[], TReturn>(
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onComplete: (...args: TArgs) => void,
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func: DeferFunction<TArgs, TReturn>
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): DeferFunction<TArgs, TReturn> {
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return (...args: TArgs) => {
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let result: TReturn;
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try {
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result = func(...args);
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} finally {
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onComplete(...args);
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}
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return result;
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};
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}
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