增加流媒体编解码业务

‘liusuyi’

2023-07-13 35d87ba0e7567ec001123ef7d83e63f211dc02e7

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