增加：坐标引导返回修正T值

liusuyi

2024-06-25 7556c19ef999f51d07d85cb5d13eba27d9efa41e

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