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异步映射并扁平化数组。
import { flatMapAsync } from '@base-web-kits/base-tools-ts'; const array = [1, 2, 3]; const result = await flatMapAsync(array, async (n) => [n, n]); // 结果: [1, 1, 2, 2, 3, 3]
collection (Array)
iteratee (Function)
(Promise<Array>)