增加流媒体数据库业务 增加电子围栏接口

‘liusuyi’

2023-08-29 510c29eecab77493816d3f0cdb5e5c4462083cc8

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export function isPromise(maybePromise) {
    return (!!maybePromise &&
        !!maybePromise.then &&
        typeof maybePromise.then === 'function');
}