修改 行锯齿bug

linwenling

2023-08-09 45b0c23655abe2b1f82e3e5ca7d07d9f0c4cc6e1

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