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fixes #58918

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This commit is contained in:
Joao Moreno
2018-11-01 15:00:36 +01:00
parent b31b07741b
commit 349e31fee9
4 changed files with 63 additions and 33 deletions
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12
extensions/git/src/util.ts
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@@ -44,6 +44,18 @@ export function filterEvent<T>(event: Event<T>, filter: (e: T) => boolean): Even
return (listener, thisArgs = null, disposables?) => event(e => filter(e) && listener.call(thisArgs, e), null, disposables);
}
export function latchEvent<T>(event: Event<T>): Event<T> {
let firstCall = true;
let cache: T;
return filterEvent(event, value => {
let shouldEmit = firstCall || value !== cache;
firstCall = false;
cache = value;
return shouldEmit;
});
}
export function anyEvent<T>(...events: Event<T>[]): Event<T> {
return (listener, thisArgs = null, disposables?) => {
const result = combinedDisposable(events.map(event => event(i => listener.call(thisArgs, i))));