每次调用mapStateToProps时，withRouter都会创建一个匹配的新对象

Question

不确定其他人是否在此之前遇到此问题：

我正在使用：     ＆＃34; react-redux＆＃34;：＆＃34; 5.0.7＆＃34;，     ＆＃34; react-router＆＃34;：＆＃34; 4.2.0＆＃34;，     ＆＃34; react-router-dom＆＃34;：＆＃34; 4.2.2＆＃34;

所以我有一个像这样的组件，

shouldComponentUpdate = (nextProps) => {
    // shallow compare each prop and see which one is changed
    console.log(nextProps.history === this.props.history) // true, good
    console.log(nextProps.location === this.props.location) // true, good
    console.log(nextProps.match === this.props.match) // false, what? althought the value inside match is the same? why match is a new object/reference every time?
}

const mapStateToProps = (state, ownProps) => {
  nothing special here, just merge state and ownProps. (Router location/match/history is in ownProps, withRouter inject them in i think)
  at the end of this function i just return the merge of {state, ownProps}
  same issue exists even without my own mapStateToProps
}

export default withRouter(connect(mapStateToProps, mapDispatchToProps)(MyComponent))

每次状态更改时，都会调用mapStateToProps。 withRouter注入位置/匹配/历史进入ownProps。但出于某种原因，匹配＆＃39;每次调用mapStateToProps时都是一个新对象，因此它会导致不正常的重新渲染。