大华setPTZ1调用普通方法

‘liusuyi’

2024-02-27 a13dc532aa93bfa9ce5c3c01323e00869f4f0b76

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