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react-router如何在onEnter钩子上使路由不跳转

在进入路由前进行判断,判断不成功就不进入路由,请问一下要怎么进行设置。
我不想转发路由,只想true的时候停留在当前路由,false的时候才跳转到下一个路由


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路由钩子 onEnter

<Route path="/admin" component={Admin} onEnter={requireAuth} />

const requireAuth = (nextState, replace) => {
    if (true) {
        replace({ pathname: '/' }) // 路由转发
    }else{
        // ...
    }
}

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