流媒体增加不转码自动按需拉流

‘liusuyi’

2023-09-23 cd37af890600186215fd53c0d419c89c562e3e70

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