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			59 lines
		
	
	
		
			2.4 KiB
		
	
	
	
		
			TypeScript
		
	
	
			
		
		
	
	
			59 lines
		
	
	
		
			2.4 KiB
		
	
	
	
		
			TypeScript
		
	
	
| export function isPromise <T = unknown> (value: T | Promise<T>): value is Promise<T> {
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|   return value && typeof (value as Promise<T>).then === 'function'
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| }
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| 
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| export function isCatchable (value: any) {
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|   return value && typeof value.catch === 'function'
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| }
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| 
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| export function timeoutPromise <T> (promise: Promise<T>, timeoutMs: number) {
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|   let timer: ReturnType<typeof setTimeout>
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| 
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|   return Promise.race([
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|     promise,
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| 
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|     new Promise((_res, rej) => {
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|       timer = setTimeout(() => rej(new Error('Timeout')), timeoutMs)
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|     })
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|   ]).finally(() => clearTimeout(timer))
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| }
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| 
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| export function promisify0<A> (func: (cb: (err: any, result: A) => void) => void): () => Promise<A> {
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|   return function promisified (): Promise<A> {
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|     return new Promise<A>((resolve: (arg: A) => void, reject: (err: any) => void) => {
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|       // eslint-disable-next-line no-useless-call
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|       func.apply(null, [ (err: any, res: A) => err ? reject(err) : resolve(res) ])
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|     })
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|   }
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| }
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| 
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| // Thanks to https://gist.github.com/kumasento/617daa7e46f13ecdd9b2
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| export function promisify1<T, A> (func: (arg: T, cb: (err: any, result: A) => void) => void): (arg: T) => Promise<A> {
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|   return function promisified (arg: T): Promise<A> {
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|     return new Promise<A>((resolve: (arg: A) => void, reject: (err: any) => void) => {
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|       // eslint-disable-next-line no-useless-call
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|       func.apply(null, [ arg, (err: any, res: A) => err ? reject(err) : resolve(res) ])
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|     })
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|   }
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| }
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| 
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| // eslint-disable-next-line max-len
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| export function promisify2<T, U, A> (func: (arg1: T, arg2: U, cb: (err: any, result: A) => void) => void): (arg1: T, arg2: U) => Promise<A> {
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|   return function promisified (arg1: T, arg2: U): Promise<A> {
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|     return new Promise<A>((resolve: (arg: A) => void, reject: (err: any) => void) => {
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|       // eslint-disable-next-line no-useless-call
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|       func.apply(null, [ arg1, arg2, (err: any, res: A) => err ? reject(err) : resolve(res) ])
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|     })
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|   }
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| }
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| 
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| // eslint-disable-next-line max-len
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| export function promisify3<T, U, V, A> (func: (arg1: T, arg2: U, arg3: V, cb: (err: any, result: A) => void) => void): (arg1: T, arg2: U, arg3: V) => Promise<A> {
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|   return function promisified (arg1: T, arg2: U, arg3: V): Promise<A> {
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|     return new Promise<A>((resolve: (arg: A) => void, reject: (err: any) => void) => {
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|       // eslint-disable-next-line no-useless-call
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|       func.apply(null, [ arg1, arg2, arg3, (err: any, res: A) => err ? reject(err) : resolve(res) ])
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|     })
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|   }
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| }
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