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feat: leading support for debounce (#10388)

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This commit is contained in:
farfromrefuge
2023-09-28 02:06:36 +00:00
committed by GitHub
parent 6d44c2d6e0
commit b6a5250511
2 changed files with 6 additions and 2 deletions
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6
packages/core/utils/common.ts
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@ -173,12 +173,16 @@ export function mainThreadify(func: Function): (...args: any[]) => void {
}; };
} }
export function debounce(fn: any, delay = 300) { export function debounce(fn: any, delay = 300, { leading }: { leading?: boolean } = {}) {
let timer: NodeJS.Timeout; let timer: NodeJS.Timeout;
return (...args: Array<any>) => { return (...args: Array<any>) => {
if (timer === undefined && leading) {
fn.apply(this, args);
}
clearTimeout(timer); clearTimeout(timer);
timer = setTimeout(() => { timer = setTimeout(() => {
fn.apply(this, args); fn.apply(this, args);
timer = undefined;
}, delay); }, delay);
}; };
} }

2
packages/core/utils/index.d.ts vendored
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@ -45,7 +45,7 @@ export function throttle(fn: any, delay?: number);
* @param fn Function to debounce * @param fn Function to debounce
* @param delay Customize the delay (default is 300ms) * @param delay Customize the delay (default is 300ms)
*/ */
export function debounce(fn: any, delay?: number); export function debounce(fn: any, delay?: number, options?: { leading?: boolean });
/** /**
* Releases the reference to the wrapped native object * Releases the reference to the wrapped native object