三一车辆实时位置添加判断null提交

zhangnaisong

2023-07-22 e03adc9fa7d0bc2fbb9c78b67de3c734e5d9a643

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