16 lines
401 B
TypeScript
16 lines
401 B
TypeScript
export function atMostOnceAFrame<F extends Function>(fn: F) {
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let frameRequest: number | null = null
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function ret(...args: any[]) {
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if (frameRequest == null) {
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frameRequest = requestAnimationFrame(function () {
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fn(...args)
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frameRequest = null
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})
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}
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}
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return ret as any as F
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}
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export function lastOf<T>(ts: T[]): T | null {
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return ts[ts.length-1] || null
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} |