xxm-test-js/dist/lib/runTasksWithConcurrency.js

xxm-js通用js工具(utils)库

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.runTasksWithConcurrency = runTasksWithConcurrency;
/**
 * 并发执行一组异步任务
 * @param tasks - 任务数组，每个任务都是一个返回 Promise 的函数
 * @param concurrency - 允许的最大并发数
 * @returns 一个包含所有任务结果的 Promise 数组
 */
async function runTasksWithConcurrency(tasks, concurrency) {
    const runningTasks = [];
    const results = [];
    let taskIndex = 0;
    const startNextTask = async () => {
        if (taskIndex < tasks.length) {
            const task = tasks[taskIndex++];
            const promise = task()
                .then((result) => {
                results.push(result);
                return startNextTask();
            })
                .catch((error) => {
                console.error('任务执行出错:', error);
                return startNextTask();
            });
            // 将 promise 转换为 Promise<T> 类型
            const typedPromise = promise.then(() => undefined);
            runningTasks.push(typedPromise);
            if (runningTasks.length >= concurrency) {
                await Promise.race(runningTasks);
            }
        }
    };
    for (let i = 0; i < concurrency; i++) {
        await startNextTask();
    }
    await Promise.all(runningTasks);
    return results;
}
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