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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 | 4x 1x 1x 1x 4x 4x 29x 29x 3x 26x 1x 25x 25x | import { AsyncOrSync, OneOrMore } from '../types'
import { sample } from 'lodash-uni'
import { wait } from './wait'
export interface LoopUntilOptions {
/**
* 重试延时，为数组时随机挑选一个。
*/
retryDelay: OneOrMore<number>
/**
* 重试限制。
*/
retryLimit?: number
}
export class LoopUntilRetryLimitExceededError extends Error {}
export async function loopUntil<T>(
fn: () => AsyncOrSync<T>,
condition: (res: T) => AsyncOrSync<boolean>,
options: LoopUntilOptions,
): Promise<T>
export async function loopUntil(
condition: () => AsyncOrSync<boolean>,
options: LoopUntilOptions,
): Promise<void>
/**
* 循环调用某个函数直至达到某个条件后返回调用结果。
*
* @param fn 要调用的函数
* @param condition 条件
* @param options 选项
*/
export async function loopUntil<T>(
fn: any,
condition: any,
options?: any,
): Promise<T> {
if (options == null) {
options = condition
condition = fn
fn = undefined
}
let retryCount = 0
// eslint-disable-next-line no-constant-condition
while (true) {
const res = fn ? await fn() : undefined
if (await condition(res)) {
return res
}
if (options.retryLimit && retryCount >= options.retryLimit) {
throw new LoopUntilRetryLimitExceededError('已达到最大重试次数')
}
retryCount++
await wait(
typeof options.retryDelay === 'number'
? options.retryDelay
: sample(options.retryDelay)!,
)
}
}
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